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Your search keyword '"Iyer-Raniga, Usha"' showing total 311 results
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15. Advancing Circular Buildings: A Review of Building Strategies for AEC Stakeholders.

Author

Motiei, Mohana, Iyer-Raniga, Usha, Andamon, Mary Myla, and Khodabakhshian, Ania

Subjects
CIRCULAR economy, TECHNOLOGY assessment, VALUE (Economics), SYSTEMS theory, DESIGNERS
Abstract

The uptake of a circular economy (CE) in the building sector is challenging, primarily due to the complexity associated with the design process and the dynamic interaction among architects, engineers, and construction (AEC) stakeholders. The standard and typical design process and construction methods raise concerns about building life cycles. Buildings should not only fulfill current needs, but one also needs to consider how they will function in the future and throughout their lifetime. To address these complexities, early planning is required to guide designers in holistically applying systems thinking to deliver CE outcomes. This paper outlines a critical review of CE implementation in buildings, with a proposed trifecta of approaches that significantly contribute to the development of circular buildings (CBs). The findings outline a proposed visualized framework with a conceptual formula that integrates CE design strategies to simplify and enhance AEC stakeholders' perception of the circularity sequence in buildings. By strategically integrating loop-based strategies with the value retention process (VRP) and design for X (DFX) strategies, along with efficient assessment tools and technologies, it becomes feasible to embrace a CE during the design phase. The outcome of this review informs AEC stakeholders to systematically and strategically integrate the critical dimensions of a CE throughout the building life cycle, striking a balance between environmental concern, economic value, and future needs. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Investigating Residential Building Materials in a Circular Economy: An Australian Perspective.

Author

Dorignon, Louise, Oswald, David, Kempton, Leela, Boehme, Tillmann, Iyer-Raniga, Usha, Moore, Trivess, and Dalton, Tony

Subjects
CIRCULAR economy, HOUSE construction, BUILT environment, DATABASE industry, CONSTRUCTION materials, DWELLINGS, CONSTRUCTION industry
Abstract

The circular economy plays a key role in the wider transition to a low-carbon built environment. Materials are critical in this transition, yet there is limited information about their current use in the built environment in many regions. This explorative study investigated circular economy in the Australian construction materials industry using a three-stage mixed-method approach. The first stage was to map actors and their practices and challenges related to material supply, use, and end of life. This involved 20 interviews with stakeholders and a workshop. The second stage was to assess key materials stocks and flows to identify the volume of the challenge through existing databases and consultation with industry stakeholders. The third stage was to understand the current state of material circularity at industry-leading examples. This was investigated through 13 interviews across two case studies, alongside site visits. These complementary research methods and stages provided findings into material circularity potential within the residential construction sector from both a macroperspective and a microperspective. The results included that new materials being used in construction are more than double the flow of waste out, showing that stocks of materials in use are growing rapidly but that data gaps are extensive. There was a focus on material reduction for cost-savings and sustainability, but there was significant opportunity for other circular economy principles, such as rethinking construction techniques. Further, in the context of a highly volatile industry, circularity requires a focus on material-specific institutional arrangements. The contribution to knowledge on construction materials and their supply chain provides fundamental insights that are required for the transition toward a circular economy, where the residential construction sector (not just in Australia but globally) would more readily reduce, reuse, recycle and recover resources, as well as being less reliant on virgin material use. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Behaviour of enzymatic soil stabilization at elevated temperatures using advanced micro structural investigations.

Author

Sidiq, Amir, Robert, Dilan J., O'Donnell, Brian, Costa, Susanga, Setunge, Sujeeva, and Iyer-Raniga, Usha

Subjects
HIGH temperatures, SOIL stabilization, SOIL moisture, POROSITY, TEMPERATURE effect
Abstract

Soil moisture variation plays a key role in maintaining the engineering properties of soils. One of the main factors that impact the soil moisture content is the temperature, which has a strong impact to change the initial or design moisture and results in significant soil volume changes. This study aims to investigate the effects of temperature on the performance of enzymatically stabilised soils. The enzyme used in this study is Eko-soil and the soil used is clayey silt of low plasticity (ML). The mechanical behaviour was first assessed through the unconfined compression strength and weight measurements based on samples exposed to a series of operational temperatures. X-ray μCT tomography images were then used to assess the microstructure. Porosity, size and geometrical shape of the pores were analysed at elevated temperatures. Results revealed that the enzyme is effective in maintaining the initial pore structure under the tested temperature range. [ABSTRACT FROM AUTHOR]

Published
2024
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18. Green Building

Author

Iyer-Raniga, Usha, Kashyap, Karishma, Brandli, Luciana Londero, Section editor, Leal Filho, Walter, Series Editor, Azul, Anabela Marisa, editor, Brandli, Luciana, editor, Lange Salvia, Amanda, editor, and Wall, Tony, editor

Published
2021
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20. Homelessness by Choice and by Force

Author

Sinxadi, Lindelwa, Campbell, Maléne, Iyer-Raniga, Usha, Section editor, Leal Filho, Walter, Series Editor, Azul, Anabela Marisa, editor, Brandli, Luciana, editor, Lange Salvia, Amanda, editor, Özuyar, Pinar Gökçin, editor, and Wall, Tony, editor

Published
2021
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21. Chronic Poverty: Current Global Scenario

Author

Dhingra, Vaishali, Thakur, Barun Kumar, Iyer-Raniga, Usha, Section editor, Leal Filho, Walter, Series Editor, Azul, Anabela Marisa, editor, Brandli, Luciana, editor, Lange Salvia, Amanda, editor, Özuyar, Pinar Gökçin, editor, and Wall, Tony, editor

Published
2021
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24. Teenage Pregnancy and Poverty

Author

Gupta, Tanushka, Iyer-Raniga, Usha, Section editor, Leal Filho, Walter, Series Editor, Azul, Anabela Marisa, editor, Brandli, Luciana, editor, Lange Salvia, Amanda, editor, Özuyar, Pinar Gökçin, editor, and Wall, Tony, editor

Published
2021
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26. Social Justice and Sustainability

Author

Amster, Randall, Iyer-Raniga, Usha, Section editor, Leal Filho, Walter, Series Editor, Azul, Anabela Marisa, editor, Brandli, Luciana, editor, Lange Salvia, Amanda, editor, Özuyar, Pinar Gökçin, editor, and Wall, Tony, editor

Published
2021
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27. Shanty Towns: A Solution to Housing Shortage Problems

Author

Tanyanyiwa, Vincent Itai, Kanyepi, Tarisai, Iyer-Raniga, Usha, Section editor, Leal Filho, Walter, Series Editor, Azul, Anabela Marisa, editor, Brandli, Luciana, editor, Lange Salvia, Amanda, editor, Özuyar, Pinar Gökçin, editor, and Wall, Tony, editor

Published
2021
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48. Sustainability Balance

Author

Ho, Oanh Thi-Kieu, Iyer-Raniga, Usha, Wong, James P. C., Mifsud, Mark C., Section editor, and Leal Filho, Walter, editor

Published
2019
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