Compression Test and Finite Element Analysis of Foamed Concrete Cube

Foamed concrete is one of the most economical and industrialized construction materials in modern building construction market either for conventional construction technique or precast construction technique. However, the damage behavior of foamed concrete had not been explored deeply by researchers especially for its continuum damage mechanics and plasticity. This paper presents the results of compressive tests and finite element analysis of foamed concrete cubes. The focus of this paper is on the compressive behavior of foamed concrete. Three dimensional- nonlinear finite element model was developed and analyzed by the aquasi static technique using the ABAQUS explicit module. The input parameters of the model were obtained from experimental results. Concrete damaged plasticity was chosen as damaged criteria. Results show that the proposed finite element model is able to predict the damage behavior of the foamed concrete cube accurately. Thus, finite element method can be used as an economical tool for studying the structural behavior of foamed concrete in compression

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mDia1 and WAVE2 proteins interact directly with IRSp53 in filopodia and are involved in filopodium formation

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Exploiting the protein corona around gold nanorods for low-dose combined photothermal and photodynamic therapy

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Structural performance of recycled aggregate in CSP slab subjected to flexure load

This paper discusses the mechanical properties of recycled aggregate concrete (RAC) and its performance in concrete sandwich precast (CSP) slab subjected to flexure load. Various percentage of recycle aggregate (RA) was used in the concrete mixture as a replacement to natural aggregate; namely 25%, 50%, 75% and 100%. The structural behavior of the CSP slab was investigated experimentally under flexure load and analyzed in the context of its ultimate load capacity, crack pattern, load-deflection profile and load-slip profile. Analysis from the results showed that the percentage of RA used has a small effect on the mechanical properties of RAC but quite significant effect on the structural behavior of CSP slab under flexure. It was found that the strength of the panels with RAC decreased with the increase of RA in the concrete. The percentage of reduction in the ultimate load of slab panels with RA was about 15% for every 25% percentage increase of RA. The first crack occurred at about 48–67% of the failure load and panels failed with excessive cracks in the tension zone of the bottom wythe. All tested panels proved to be very ductile with large deformation prior to failure and behaved in a partially composite manner