Mathematical Model for Compressive Stress-Strain Curve of Recycled Aggregate Concrete

Wei Wang; Li Jun Yang; Xiao Ni Wang

doi:10.4028/www.scientific.net/KEM.385-387.521

Paper Titles

Effect of Strain-Induced Martensitic Transformation on Coaxing Effect of Austenitic Stainless Steels
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Characteristics of Deformation-Induced Transformation in Steel 2.25Cr1Mo
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Stress Analysis for Shrink Fitting System Used for Ceramics Conveying Rollers
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A Study of Residual Stresses in Al/SiC_p Linear Friction Weldment by Energy-Dispersive Neutron Diffraction
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Mathematical Model for Compressive Stress-Strain Curve of Recycled Aggregate Concrete
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Equivalent Stress Intensity Factor of Pre-Northridge Connections
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Fast Analytical Algorithm for Fatigue Crack Life Estimations of Integrally Stiffened Metallic Panels
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Application of Artificial Neural Network to Forecast the Tensile Fatigue Life of Carbon Material
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Study on the Fatigue Behavior of Carbon/Carbon Composites
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Mathematical Model for Compressive Stress-Strain Curve of Recycled Aggregate Concrete

Abstract:

For the effective utilization of recycled aggregate concrete (RAC), it is necessary to correctly describe its compressive stress-strain curve (SSC) in theoretical and numerical analysis as well as engineering design of RAC structures. The objective of this study is to establish a good mathematical model for SSC of RAC. Based on energy dissipation theory, the differential governing equation of SSC is deduced and a new mathematical model is obtained. The new model can well describe both hardening type SSC and softening type SSC. It can overcome the shortcoming of the traditional model. Finally, good agreements have been found between the new model and the experimental investigations.