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Self compacting concrete is also referred as super workable concrete as well as highly flowable concrete which are widely used as innovative material in the fast growing construction industry because of its hardened and fresh state properties. In recent days availability of river sand is less and also focus is more on sustainability development and hence there arose a situation for developing an alternative material by using the industrial waste. In this research work, complete replacement of natural sand by processed slag sand and the properties of SCC determined by using Nan-su method of mix design with incorporating EFNARC guidelines. At present days, the favorite material for the column strengthening is fiber reinforced polymer (FRP). The construction industry requires the sustainable development along with increase in strength. Therefore, column is wrapped by using natural jute fiber by varying number of wrapping layers and the structural behaviour of columns are assessed. A three-dimensional finite element (FE) model has been developed to simulate the behaviour of rectangular SCC columns wrapped with jute fiber. The developed FE model is validated by comparing the loaddisplacement responses which verifies the model to use in future. The FEA results are obtained in terms of axial load vs. axial displacement, axial load-axial strain. The numerical analysis developed by ANSYS displayed a very close simulation and deflection is compared with test results at the same load. [ABSTRACT FROM AUTHOR]

This paper deals with optimizing smeared extensional stiffness ratio of stiffeners to that of skin of laminated composite hat-stiffened panel with the variation of pitch length stiffeners, depth of stiffeners and panel orthotropy ratio for three different plie configurations to maximize buckling capacity of the panel. Critical buckling load and global buckling mode shape of the laminated composite hat-stiffened panel are studied for the design of lightweight structures. Parametric studies of hat-stiffened panel under in-plane compressive load are presented with simply supported boundary conditions. Models are analyzed by applying Finite Element method using ABAQUS. A database is provided based on smeared stiffness approach for two different hatstiffened (600-hat-stiffened and 750-hat-stiffened) panels with variation of pitch length stiffeners, depth of stiffeners, panel orthotropy ratio and smeared extensional stiffness ratio of stiffeners to that of skin with three different plie configurations. On the basis of the study, optimum smeared extensional stiffness ratio is increased with increasing of orthotropy ratio for all similar skin, but it is also increased with decreasing extensional stiffness ratio to maximize buckling capacity of hat-stiffened panel and general guidelines are developed for the design of better hat-stiffened panel. [ABSTRACT FROM AUTHOR]

Finite element method was used to document the effects of temperature, environment, crack location and weld strength mis-match on the fracture capacity of modern pipeline girth welds. The results demonstrated a marginal reduction (>0.83 times) in the crack driving force for pipelines operating in a sour environment or at elevated temperatures or for cracks located in the weld centerline than at the fusion line. The crack driving force is lower for under-matching than over-matching welds. Furthermore, the numerical method was compared with analytical method as per BS7910 and the results showed that the latter was more conservative for deeper cracks ( a / t > 0.4). [ABSTRACT FROM AUTHOR]