Stress-strain curves of high-performance recycled concrete under conventional triaxial compression
1.College of Civil and Architecture Engineering, Guangxi University, Nanning, Guangxi 530004, China; 2.Key Laboratory of Concrete and PrestressedConcrete Structures of Ministry of Education, Southeast University, Nanjing, Jiangsu 210096, China)
Abstract：In order to investigate the stress-strain curves of high performance recycled concrete under uniaxial and conventional triaxial compression，the experiments of 43 cylinder with Φ50 mm×100 mm were conducted according to RMT201.The effects of lateral pressure and recycled aggregate replacement ratio strength, strain peak and stress-strain curve were discussed to establish the constitutive equations. Test results show that the failure mode of high performance recycled concrete are similar to that of ordinary concrete,while the final failure mode of recycled aggregate is quite different with that of natural aggregate. As the lateral pressure increases, the peak stress and peak strain increase linearly. The shape of high performance compressive stressstain curves under uniaxial and conventional triaxial compression is similar to that of ordinary concrete with great increase of peak strain. With the increase of lateral pressure, the ascending stage becomes more steep with more gentle decline of descending stage.
2011, Vol. 32 
