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Copyright of Environmental & Social Management Journal / Revista de Gestão Social e Ambiental is the property of Environmental & Social Management Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The global environmental impact of the civil construction industry has spurred the search for sustainable materials. Bamboo, an abundant raw material in tropical regions, offers economic viability and diverse construction applications while sequestering substantial carbon dioxide from the atmosphere. However, South American bamboo plants lack extensive study and recognition compared with their Asian counterparts. Brazil has shown a growing interest in bamboo, increasing scientific production, publishing standards for its use, and in preservative treatments using aqueous disodium octaborate tetrahydrate. To comply with Brazilian standards and reduce production costs, was obtained a predictive model for electrical conductivity measured in solutions with varying levels of disodium octaborate tetrahydrate, copper sulfate, and water sources. The model had a 97.9% correlation between the explained variable, electrical conductivity, and its predictor, the disodium octaborate tetrahydrate level. Its use may foster prototype development that may monitor preservative solutions, permitting reduced costs in bamboo production. Consequently, it may foster sustainable bamboo production and support the environmental goals of the country's construction industry. [ABSTRACT FROM AUTHOR]

Copyright of Environmental & Social Management Journal / Revista de Gestão Social e Ambiental is the property of Environmental & Social Management Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The construction industry is known to present various stress-inducing conditions for its workforce, especially for workers under different employment arrangements. This research aims to investigate the influence of employment status (permanent and temporary workers) on the perception of well-being at work (WBW). The study also aims to assess whether variables such as satisfaction, commitment, and involvement are statistically significant in evaluating construction workers' WBW. The research was conducted at various construction sites located in the Brazilian Amazon. A total of 376 responses were obtained using the Work Well-being Inventory (IBET-13) questionnaire. A multiple linear regression model was constructed to understand the relationship between self-perceived well-being (dependent variable) by employees and employment status, satisfaction, commitment, and involvement at work (independent variables). The results suggest that the employment arrangement does not significantly impact the evaluation of well-being, indicating that other factors may mediate the relationship between WBW and mental health, as well as contribute to explaining this result, such as current legislation, occupational characteristics, and unique aspects of the Brazilian reality. The research findings can contribute to the development of strategies that promote a more sustainable and healthy construction environment for workers. [ABSTRACT FROM AUTHOR]

The accumulation of brown algae from the genus Sargassum has been increasing over the years in coastal regions of the Caribbean, Africa, Brazil, and Mexico. This causes harmful effects to the ecosystem, human health, the economy, and the climate due to gas emissions from its decomposition process. There is the possibility of this biomass being reused in civil construction, and some studies have been carried out on its application to common Portland cement mortar. As such, the objective of this study is to evaluate the potential of sargassum ash as a mineral addition to partially replace fine aggregates in Portland cement mortar. Characterization of the raw materials was carried out through X-ray fluorescence spectroscopy, loss on ignition, particle size distribution, Brunauer–Emmett–Teller (BET) analysis, real density, X-ray diffraction, scanning electron microscopy, and dispersion spectroscopy of electrons. The mortars were prepared by partially replacing the fine aggregate (sand) with sargassum ash at 0%, 5%, 10%, and 20%. Mortar performance was evaluated through water absorption, apparent porosity, apparent specific mass, and compressive strength 7, 28, and 63 days after curing. Lastly, a life cycle assessment was conducted in accordance with ISO standards 14040:2006 and 14044:2006. The results showed that replacing sand with sargassum ash increases water absorption and apparent porosity, and decreases the apparent specific mass and compressive strength as replacement increases. Nevertheless, the compressive strength results after 63 days for 5 and 10% replacement did not differ statistically from reference values. The life cycle assessment indicated that mortars with partial replacement of sand by sargassum ash show positive environmental impacts when compared to reference values for most categories, regardless of the scenario analyzed, especially for mortar with 10% replacement. As such, the use of sargassum ash at 10% does not alter the mortar's compressive strength values after 63 days, but does reduce its environmental impact. The application of this biomass in civil construction materials provides a destination for this algae, and that can be a solution to mitigate the social, environmental, and economic problems it has been causing. [ABSTRACT FROM AUTHOR]

Purpose: Construction industry (CI) has great prominence for the world economy, and it is expected that, with the use of the innovative technologies and approaches of Industry 4.0 (I4.0), the new industrial paradigm, construction can reach higher levels of productivity. This study aims to develop a model (readiness model) to assess the level of use of I4.0 technologies by the construction sector in Brazil and its most relevant applications. Design/methodology/approach: The methodology used was bibliographic research, design-science research and a survey to validate the model, carried out with 162 companies, considered among the main ones in the sector in Brazil. The literature review revealed 13 technologies of I4.0 applied to construction; hence, the views of industry experts were based on these technologies. Findings: The Digital Advancement Within CoNstruction (DAWN) readiness model was proposed, showing that among the 13 evaluated technologies of I4.0 and their applications, the Brazilian construction companies had a low level of utilization; both high and middle-income companies presented this low level of use; some technologies with a greater number of scientific publications were less used in practice in the Brazilian construction. Originality/value: The originality and theoretical contribution are to present a readiness model to assess the level of use of I4.0 technologies and their most relevant applications in the CI in countries with an economy similar to Brazil's, making it possible to measure the level of adoption of these technologies. [ABSTRACT FROM AUTHOR]

The increase in the cement industry's production, especially the production of Ordinary Portland Cement (OPC), increases the amount of CO2 released into the atmosphere, one of the main greenhouse gases responsible for global warming, with harmful effects on the environment and human health. Against this background, geopolymer concrete is a new type of inorganic polymer material that has attracted the attention of researchers in the building area, due to recycling waste by-products to replace OPC and reducing greenhouse gas (CO2) emissions during its manufacture. It also exhibits better mechanical, thermal, chemical, and electrical properties than OPC-based concrete. In the same environmental context, this material has also attracted the attention of researchers in the wastewater treatment area, because of its specific surface area and the capability of adsorption, photodegradation, and encapsulation of organic and inorganic pollutants. The principal focus of this paper is to provide an in-depth overview of the works that have been undertaken to explore geopolymer-type materials. The paper will attempt to develop a comprehensive database, based on the last research works published between 2010 and 2023 with about 247 references, which explains the elaboration, characterization, and application of these materials in several fields. Therefore, it is estimated that geopolymer composites are promising future candidates for recycling industrial solid waste, the partial or total replacement of OPCs in the construction industry, and the development of adsorbents and catalysts for wastewater treatment.

This article analyzes the effect of the rehydration method on the physical–mechanical properties of accelerated carbonation-cured magnesium-based fiber cement boards. The rehydration process of the boards was analyzed in conjunction with the analysis of the pre-curing time before accelerated carbonation (24, 48, and 72 h before carbonation), resulting in eight different curing parameters used in this investigation. The physical–mechanical performance and microstructural characteristics of magnesium oxysulfate boards before and after carbonation were investigated by water absorption, apparent porosity, and bulk density using the four-point bending test, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. According to the results, the accelerated carbonation process improved the mechanical properties of the boards. The samples that carbonated after 48 h showed a higher modulus of rupture. The rehydration process of the composites before carbonation led to enhancements in the pre-cured boards for 48 and 72 h, demonstrating that carbonation occurred more effectively after water rehydration. The mechanical improvements were associated with the formation of hydration products, which preferentially formed in the pores and voids of the fiber cement matrix. These carbonation products altered the physical properties of the composites, increasing the density of the boards and reducing the void volume. The decomposition of the formed carbonates was confirmed by thermogravimetric analysis, which indicated that the rehydration process favored the carbonation of the composites.

This article analyzes the effect of the rehydration method on the physical–mechanical properties of accelerated carbonation-cured magnesium-based fiber cement boards. The rehydration process of the boards was analyzed in conjunction with the analysis of the pre-curing time before accelerated carbonation (24, 48, and 72 h before carbonation), resulting in eight different curing parameters used in this investigation. The physical–mechanical performance and microstructural characteristics of magnesium oxysulfate boards before and after carbonation were investigated by water absorption, apparent porosity, and bulk density using the four-point bending test, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. According to the results, the accelerated carbonation process improved the mechanical properties of the boards. The samples that carbonated after 48 h showed a higher modulus of rupture. The rehydration process of the composites before carbonation led to enhancements in the pre-cured boards for 48 and 72 h, demonstrating that carbonation occurred more effectively after water rehydration. The mechanical improvements were associated with the formation of hydration products, which preferentially formed in the pores and voids of the fiber cement matrix. These carbonation products altered the physical properties of the composites, increasing the density of the boards and reducing the void volume. The decomposition of the formed carbonates was confirmed by thermogravimetric analysis, which indicated that the rehydration process favored the carbonation of the composites. [ABSTRACT FROM AUTHOR]

Copyright of Environmental & Social Management Journal / Revista de Gestão Social e Ambiental is the property of Environmental & Social Management Journal and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purpose. To conduct a comprehensive analysis of investment relations, particularly in the context of investing in civil construction in Ukraine under martial law. It involves comparing financial models and restoration strategies successfully applied in other countries and determining their applicability in the Ukrainian context. Methodology. The study employed statistical analysis and the “case-study” method, which involves planning the future based on past cases. This approach helped identify common challenges faced by all investors and explore possible solutions. The use of these methods yielded well-founded results and practical recommendations for improving investment relations in civil construction in Ukraine during wartime between different investment classes. Findings. The study explored opportunities to attract international investments in civil construction amid the largest military conflict since World War II, which is a key element of effective housing recovery. Initiatives facilitating the adoption of eco-friendly technologies were examined, with financial support from the World Bank and IMF serving as essential resources. In the near future, the application of the “case-study” method, utilizing Ukraine’s experience and analyzing intellectual assets and developments, is proposed. Sources of funding that can contribute to civil construction development were also investigated and analyzed. The direct impact of military actions on the financial flows of each region was identified, indicating a significant outflow of funds from the country. Originality. It is recommended to implement EU initiatives at the state level, providing opportunities for the application of eco-friendly technologies. New strategies for effective financial management during wartime are proposed for consideration by government agencies. This approach expands scientific knowledge in the fields of finance and construction management and enhances civil construction management overall. Practical value. The research results can be utilized by private and public institutions, including the International Organization for Migration (IOM) in Ukraine, for the development of further emergency housing recovery projects for population use. [ABSTRACT FROM AUTHOR]

Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The research community has conducted several controlled “in -lab” assessments on the effectiveness of industrial exoskeletons, paving the way for their adoption. However, field testing, focusing on ergonomics and the user experience, could serve to enhance both end-users' awareness and address open doubts concerning true effectiveness of industrial exoskeletons. This study presents an analysis of qualitative data regarding the use of back-support exoskeletons during field trials in harsh civil engineering environments. This work evaluates the StreamEXO's (an active back-support exoskeleton) efficacy in reducing fatigue and the evolution of its perceived usefulness. This is achieved using qualitative data collection tools, during real scenarios testing over multiple-day trials. Collected data shows a positive correlation between self-reported fatigue, measured on a four verbal anchors-based Borg CR10 scale, and the use of the exoskeleton during physically demanding movements. Moreover, the evolution of scores throughout the testing sessions (90 minutes of exoskeleton use for three nonconsecutive days) suggests a trend due to the adaptation and learning curve of workers during the exoskeleton experience. The analysis of the open-ended answers highlights that the adaptation to physical interaction has a negative oscillation on day two to rise back during the third day, possibly correlated to a change in muscle pattern. The main critical factors affecting comfort during the exoskeleton experience are weight balance, body pressure, and thermal comfort, which can strongly affect device acceptance.

The construction industry is known to present various stress-inducing conditions for its workforce, especially for workers under different employment arrangements. This research aims to investigate the influence of employment status (permanent and temporary workers) on the perception of well-being at work (WBW). The study also aims to assess whether variables such as satisfaction, commitment, and involvement are statistically significant in evaluating construction workers’ WBW. The research was conducted at various construction sites located in the Brazilian Amazon. A total of 376 responses were obtained using the Work Well-being Inventory (IBET-13) questionnaire. A multiple linear regression model was constructed to understand the relationship between self-perceived well-being (dependent variable) by employees and employment status, satisfaction, commitment, and involvement at work (independent variables). The results suggest that the employment arrangement does not significantly impact the evaluation of well-being, indicating that other factors may mediate the relationship between WBW and mental health, as well as contribute to explaining this result, such as current legislation, occupational characteristics, and unique aspects of the Brazilian reality. The research findings can contribute to the development of strategies that promote a more sustainable and healthy construction environment for workers.

Copyright of Revista Foco (Interdisciplinary Studies Journal) is the property of Revista Foco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Despite increased safety investments in the civil construction sector, high accident rates persist, often due to workers' intentional unsafe behaviors influenced by poorly understood psychological factors. This study utilized validated interpretative structural modeling (VISM), an innovative technique, to investigate factors impacting the well-being and risk perception of construction workers in the Brazilian Amazon. The VISM model was developed through five steps: (1) identification of indicators; (2) definition of constructs; (3) identification of relationships between constructs; (4) validation of these relationships; and (5) creation of the model. The results underscore the effectiveness of VISM in crafting complex models with robust statistical validity, even in studies with sample limitations and intricate or circular relationships among constructs. The research identified various factors in this phenomenon, such as the importance given by management to workplace safety, job dissatisfaction, work-related stress, turnover intention, work–family balance, alcohol and cigarette use, physical health, perception of accident risks at work, and education and training in workplace safety. Another significant contribution lies in the model's ability to discern both direct and indirect relationships among these well-being factors. This insight enables the formulation of strategies to enhance worker well-being and reduce workplace accidents, particularly those stemming from intentional unsafe behaviors. [ABSTRACT FROM AUTHOR]

Copyright of GeSec: Revista de Gestao e Secretariado is the property of Sindicato das Secretarias e Secretarios do Estado de Sao Paulo (SINSESP) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Purpose -- To analyze the evolution of Environmental, Social and Governance (ESG) and innovation in the civil construction industry, focusing on innovative and sustainable practices, as well as ways of measuring the level of construction companies in these themes. Design/methodology/approach -- A Systematic Literature Review approach was used. The Web of Science and Elsevier Scopus Databases, from 2017 to 2022, were used for data collection, based on a set of keywords and Boolean operators ("sustainable development" & "framework" & "measurement" & "environment"). Using the Zotero Software, 488 papers were classified and organized according to the publication date, main content, proposals for sustainable and innovative tools and techniques. The papers were analyzed in the VOSviewer Software. Findings -- There is an Asian predominance in the volume of publications and networks of strong connections in clusters by countries. The authors tend to look for papers from the same region as a reference, going against the concept of globalization of ESG and innovation themes and the condition of replicability of practices. Among the exemplified practices, there are replicable models and initiatives, as well as incipient innovative construction materials and methods in search of consolidation. Originality/value -- Amid the current and growing discussion about innovation and ESG in organizations, it is noted that the civil construction sector still lacks better performances in these themes. This paper aims to contribute to the advancement of the discussion in the sector, bringing together works found in recent literature. [ABSTRACT FROM AUTHOR]

This work introduces a methodology to evaluate, rank, and select suppliers for an organisation managing a large and complex construction project. The company's procedure to complete a supplier evaluation is conflated with other supplier features such as product type and complexity, delivery characteristics and requirements, and geographic location of the project. The introduced model segregates the effects of each feature and then aids supplier selection on various criteria without the confounding effects. Model parameters are determined using Bayesian estimators allowing for information integration from prior periods. The estimation approach provides rich model parameter data, allowing for use in additional analysis. This work advances the research in supplier selection by illustrating a practical forecasting and predictive technique for supplier selection. One result is that the separability of factors in a multiple criteria decision environment can prove valuable for managers to help decipher and isolate factors in a complex decision environment. The technique is feasible for smaller problem sets and provides a robust solution. Past performance and future performance potential are both considered. Analysis and future research directions allow for further development. [ABSTRACT FROM AUTHOR]

The accumulation of brown algae from the genus Sargassum has been increasing over the years in coastal regions of the Caribbean, Africa, Brazil, and Mexico. This causes harmful effects to the ecosystem, human health, the economy, and the climate due to gas emissions from its decomposition process. There is the possibility of this biomass being reused in civil construction, and some studies have been carried out on its application to common Portland cement mortar. As such, the objective of this study is to evaluate the potential of sargassum ash as a mineral addition to partially replace fine aggregates in Portland cement mortar. Characterization of the raw materials was carried out through X-ray fluorescence spectroscopy, loss on ignition, particle size distribution, Brunauer–Emmett–Teller (BET) analysis, real density, X-ray diffraction, scanning electron microscopy, and dispersion spectroscopy of electrons. The mortars were prepared by partially replacing the fine aggregate (sand) with sargassum ash at 0%, 5%, 10%, and 20%. Mortar performance was evaluated through water absorption, apparent porosity, apparent specific mass, and compressive strength 7, 28, and 63 days after curing. Lastly, a life cycle assessment was conducted in accordance with ISO standards 14040:2006 and 14044:2006. The results showed that replacing sand with sargassum ash increases water absorption and apparent porosity, and decreases the apparent specific mass and compressive strength as replacement increases. Nevertheless, the compressive strength results after 63 days for 5 and 10% replacement did not differ statistically from reference values. The life cycle assessment indicated that mortars with partial replacement of sand by sargassum ash show positive environmental impacts when compared to reference values for most categories, regardless of the scenario analyzed, especially for mortar with 10% replacement. As such, the use of sargassum ash at 10% does not alter the mortar’s compressive strength values after 63 days, but does reduce its environmental impact. The application of this biomass in civil construction materials provides a destination for this algae, and that can be a solution to mitigate the social, environmental, and economic problems it has been causing.

Objectives. The objective of this study is to use bibliometric and systemic terms to select and analyze a set of articles dealing with occupational risk management in the civil construction industry. Methods. Knowledge development process – constructivist (ProKnow-C) methodology was used as an intervention instrument to guide the selection of the bibliographic portfolio and to support systemic analysis. Results. The bibliographic portfolio was created and included 20 articles. Bibliometric highlights were relevant articles, authors, countries of origin, journals and keywords. Systemic analysis showed opportunities to contribute to the state of the art in all areas of knowledge, enabling the researcher to understand theoretical bases, gaps and research opportunities for the theme and thus establish their research question in accordance with the established knowledge vision. Conclusions. The systemic analysis of each article in the bibliographic portfolio based on the decision support model and areas of knowledge present in each stage of its construction measures the amplitude of the knowledge at each stage, and therefore the completeness of or gaps in each article. This clarifies the overall state of and gaps in the field, showing opportunities for new research. [ABSTRACT FROM AUTHOR]

This paper develops the mechanical and durable samples of C50 high-performance concrete, studies the mechanical properties, crack resistance, sulfate attack resistance, frost resistance, and impermeability of concrete with different mineral admixtures of mineral powder and fly ash, and obtains the best mineral admixture of mineral powder and fly ash to improve the performance of high-performance concrete. The results show that the doping effect is the best when the ratio of prepared mineral powder to fly ash is 3:2. With the increase in the mineral powder–fly ash admixture, the slump and expansion of high-performance concrete decrease rapidly at first and then slowly. In total, 60% doping is the turning point; the compressive and flexural strengths of concrete decreased slowly at first and then rapidly. Taking 30% of the admixture as the turning point, 35% of the mineral powder fly ash is generally selected. By mixing and adding a certain proportion of fly ash and mineral powder admixtures, the crack resistance of concrete is enhanced, and the shrinkage and cracking are reduced. The corrosion resistance coefficient will exceed 88%, the relative dynamic elastic modulus will exceed 95%, and the impermeability grade will reach P17. The durability of concrete can be improved by adding mineral admixtures. [ABSTRACT FROM AUTHOR]

The civil construction sector has been looking for new ways to minimize the impacts that are projected by the sector itself to the environment, whether with new techniques, methods and technologies that can change the current scenario. This article presents proposals sustainable practices and analysis of the cost to implement in a Social Interest Housing building located in the city of Caruaru, Pernambuco. The studies consisted of an evaluation based on the sustainability criteria established by the environmental certification Casa Azul + Caixa Seal, proposing solutions, and analyzing the economic feasibility. The project would initially be classified in the Topázio category of the Casa Azul + Caixa Seal. In the Cristal, Topázio and Safira grades, the total disbursed by the construction company would be R$ 110,506.56, corresponding to 0.63% of the value of the work. For the Diamond gradation, the total would be R$ 306,875.21, corresponding to 1.72% of the value of the construction. With the implementation of solar energy, savings would be 100% in the energy bill for powering common areas and a direct decrease in the condominium fee of 6% per month. Installing occupancy sensors in common areas, the monthly savings on the condominium's energy bill would be 37%. Adoption of sustainable solutions proved to be viable due to the benefits of quality of life, economy and advantages to the financing bank with a lower interest rate for the construction company and residents. [ABSTRACT FROM AUTHOR]

Scientific articles related to the incorporation of residues in civil construction materials are growing worldwide, although their practical application is still incipient. In this scenario, this paper produced an occurrence map of the most studied residues in Brazil when incorporated in cement-based composites. Initially, the most relevant residues were identified through a bibliometric analysis on the Scopus database, using the software VOSviewer. This analysis included scientific papers from Brazilian institutions published from 2001 to 2022 regarding the development of cement-based composites using residues, wastes, or tailings. Subsequently, to map the occurrence of these materials in each Brazilian state, we used public and private data on the country’s industrial production and waste disposal. From 1272 articles analyzed, we identified 49 residues with at least 2 citations. Among the most cited residues in Brazilian publications are construction and demolition waste, rice husk, glass waste, sugarcane bagasse, and tire rubber residue. The authors noticed the heterogeneity of the occurrence of the residues across the large Brazilian territory and found gaps on research trends involving them. These and other observations facilitate the decision-making process regarding logistics and investments related to the reuse and recycling of these materials.

This research studies soil-compacted bricks using phosphogypsum (PG) in their dosage. Laboratory tests were performed to assess these bricks' physical characteristics. To obtain the bricks, two dosages were used: 4 and 7% of phosphogypsum (PG) concentration. Bricks with no phosphogypsum (PG) in their mixture were also assessed as a benchmark. The brick's physical characteristics were obtained by bricks dried by the sun and in an oven at 900 °C for 96 h. The results of the laboratory tests were analyzed through statistical analysis to explore the differences between the means for each studied condition (dosage and drying method). We found no statistically significant difference between the mean strength of bricks with 4% phosphogypsum (PG) in their dosage and bricks with no PG. Beyond 4% of the phosphogypsum (PG) dosage, the brick's strength presented a reduction. For all dosages, bricks dried in the oven showed higher strength than bricks dried in the sun. However, according to the Brazilian Technical Standards, all studied bricks presented enough strength to be used in regular construction. Therefore, phosphogypsum (PG) for brick manufacturing can be an alternative disposal method, which can help mitigate the civil construction environmental impacts. [ABSTRACT FROM AUTHOR]

Copyright of GeSec: Revista de Gestao e Secretariado is the property of Sindicato das Secretarias e Secretarios do Estado de Sao Paulo (SINSESP) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Buildings composed of several projects are generally designed by different professionals. In this way, the risk of interference between them at the time of execution is great. This fact damages the progress of the work, generating rework, increased cost, time and even post-work anomalies. The objective of this article is to analyze the BIM methodology for carrying out project compatibility. The projects were prepared from models created in Autodesk Revit 2021 and an interference check was carried out in Autodesk Navisworks 2021. For the compatibility of projects, an interference detection matrix was used based on "GuBIMclass v.1.2". Several interferences were identified between the different projects. By making projects compatible, it is possible to identify interferences between elements and make changes before the execution phase, which helps to reduce projects that waste time and money, in addition to avoiding possible anomalies. BIM technology is a fundamental training process, fundamental for the implementation and advancement of civil construction, in engineering and civil construction courses. [ABSTRACT FROM AUTHOR]

Civil construction is responsible for the consumption of large amounts of water in concrete manufacturing, hydration of cementitious materials, equipment cleaning and aggregate washing. Therefore, the employment of reclaimed water in concrete production could be a relevant possibility for large-scale recycling, cost reduction and conscious use of raw materials, whose potential is currently little explored in the world. This study is aimed at understanding how civil engineers and architects see the applicability of reclaimed water, both as part of the concrete mixture and in its production process. A total of 94% of the professionals interviewed accepted the reclaimed water; however, they observed that the greatest difficulty for the commercialization of such concrete is the low acceptance of the product by consumers. [ABSTRACT FROM AUTHOR]

Copyright of Building the way - Revista do Curso de Letras da UEG/Itapuranga is the property of Universidade Estadual de Goias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of TST - Transportes, Servicios y Telecomunicaciones is the property of Asociacion Iberica de Historia Ferroviaria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The civil construction industry has a significant role in the socioeconomic development of a country and seeks to understand the emerging technologies of computational resources, such as artificial intelligence, and those that are inserted into the design processes, which influence the construction quality. This work investigates generative design, an approach to projects aided by algorithms. Recent new breakthroughs related to generative design have the potential to drastically change the methods of construction. This article provides a new view of building construction. Thus, through exploratory research based on application examples and a case study, this study presents the innovative aspects of generative design for construction projects.

Despite increased safety investments in the civil construction sector, high accident rates persist, often due to workers’ intentional unsafe behaviors influenced by poorly understood psychological factors. This study utilized validated interpretative structural modeling (VISM), an innovative technique, to investigate factors impacting the well-being and risk perception of construction workers in the Brazilian Amazon. The VISM model was developed through five steps: (1) identification of indicators; (2) definition of constructs; (3) identification of relationships between constructs; (4) validation of these relationships; and (5) creation of the model. The results underscore the effectiveness of VISM in crafting complex models with robust statistical validity, even in studies with sample limitations and intricate or circular relationships among constructs. The research identified various factors in this phenomenon, such as the importance given by management to workplace safety, job dissatisfaction, work-related stress, turnover intention, work–family balance, alcohol and cigarette use, physical health, perception of accident risks at work, and education and training in workplace safety. Another significant contribution lies in the model’s ability to discern both direct and indirect relationships among these well-being factors. This insight enables the formulation of strategies to enhance worker well-being and reduce workplace accidents, particularly those stemming from intentional unsafe behaviors.

Copyright of Revista Espacios is the property of Talleres de Impresos Oma and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Some natural gas distributors for residential and commercial buildings in Brazil use galvanised steel tubes and fittings manufactured by the hot-dip zinc process that is supported by the specifications contained in the Brazilian Standards. Zinc coating is one of the most widely used methods to provide protection against corrosion. It is therefore essential that national and international tube manufacturers and installation and maintenance companies in civil construction also meet the defined national and international standards, especially when the tubes and fittings are used for natural gas in residential buildings. Descriptions, characterisations, and comparisons are made by the Copper Sulphate Solution test of the zinc coating (g/m2), and defects can occur in the zinc layer using metallographic analysis. Considering that the Copper Sulphate Solution test not only evaluates the uniformity but also assesses the porosity of the coating on galvanised steel elements, some pipes available in the Brazilian market do not comply with the standards. At least 70% of the test specimens were rejected by the Brazilian standards. [ABSTRACT FROM AUTHOR]

Hybrid nanocomposite hydrogels, as admixtures for internal curing of cementitious materials, have been widely studied. This study analyzes the effect of applying 0.5% (wt/wt cement) of pre-soaked hydrogels based on polyacrylamide, carboxymethylcellulose, and three different concentrations of Cloisite-Na+ (0, 10, and 20% wt/wt) on the fresh and hardened properties of cementitious mortars. In general, all mortars with hydrogel decreased the consistency index, mainly M20, due to the high concentration of Cloisite-Na+ that modifies the release kinect of the hydrogel. The results showed a slight variation, with an overall average value of 99% water retention in all mortars. This behavior is due to the portion of hydrogel-mortars dosage water retained to reduce the availability of free water in the mixture because this amount of water is stored, a priori, within the polymer particles. At 28 d, the mortars produced with hydrogels containing 20% of nanoclay (M20) exhibit mechanical behavior similar to the reference mortar (M), which corroborates the percentage of voids found. Scanning electron microscope images confirm that the M and M20 mortars are uniform and possess few pores or microcracks. Thus, these hybrid hydrogels have the potential to be innovative materials for water control improvements in cementitious materials technology. [ABSTRACT FROM AUTHOR]

Accounting standards are constantly being updated, to promote greater quality in companies' accounting information and provide its users with greater reliability in their statements. The article aims to verify if the companies in the Civil Construction segment listed on B3 are performing the disclosure of derivatives in accordance with CPC 40 (R1). Although the topic of derivatives has already been the subject of other empirical research, it still requires attention, given the importance of these financial instruments in the economic scenario and the growth in their use by companies. For the development of this article, the methodology used involved a research of a descriptive and exploratory nature, with a qualitative and documental approach, using the technique of content analysis for data analysis. The results revealed that some companies studied are still below what is considered ideal in terms of disclosure. However, in general, the companies sought to comply with the requirements contained in CPC 40 (R1), presenting an average of 67.19% of complete adherence to the aforementioned accounting pronouncement. There was also unanimity regarding the use of the swap derivative by the analyzed companies. Thus, the results of this research converged with points argued in the theoretical foundation and with results presented in previous studies on the subject. [ABSTRACT FROM AUTHOR]

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