The Complete Stress—strain Curve of Recycled Aggregate Concrete under Uniaxial Compression Loading

武汉理工大学学报-材料科学版(英文版), 2010, 25(5): 862-865. doi: 10.1007/s11595-010-0109-9

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Civil Engineering & Mechanics,Huazhong University of Science and Technology,Wnhan 430074,China;School of Civil Engineering,Hunan City College,Yiyang 413000,China;

2.School of Civil Engineering,Hunan City College,Yiyang 413000,China;

3.Commercial Concrete Company of No.3 Construction Bureau of China,Wuhan 430070,China

4.Commercial Concrete Company of No.3 Construction Bureau of China,Wuhan 430070,China

5.School of Civil Engineering,Hunan City College,Yiyang 413000,China;

基金项目: the Fund of Hunan Provincial Construction Department(06-468-8)

The Complete Stress—strain Curve of Recycled Aggregate Concrete under Uniaxial Compression Loading

DU Ting ^1, , WANG Weihong ^2, , LIU Zhongxin ^3, , LIN Huaili ^4, , GUO Taiping ^5,

1.School of Civil Engineering & Mechanics,Huazhong University of Science and Technology,Wnhan 430074,China;School of Civil Engineering,Hunan City College,Yiyang 413000,China;

2.School of Civil Engineering,Hunan City College,Yiyang 413000,China;

3.Commercial Concrete Company of No.3 Construction Bureau of China,Wuhan 430070,China

4.Commercial Concrete Company of No.3 Construction Bureau of China,Wuhan 430070,China

5.School of Civil Engineering,Hunan City College,Yiyang 413000,China;

Keywords： recycled aggregate concrete

The mechanical performance of recycled aggregate concrete(RAC)is investigated.An experiment on the complete stress-strain curve under uniaxial compression loading of RAC is carried out.The experimental results indicate that the peak stress,peak strain,secant modulus of the peak point and original point increase with the su'ength grade of RAC enhanced.On the contrary,the residual stress of RAC decreases with the strength grade enhancing,and the failure of RAC is often broken at the interface between the recycled aggregate and the mortar matrix.Finally,the constitutive model of stress-strain model of RAC has been constituted,and the results from the constitutive model of stress-strain meet the experiment results very well.

参考文献

[1]	J. S. Ryu .An experimental study on the effect of recycled aggregate on concrete properties[J].Magazine of concrete research,2002(1):7-12.
[2]	Jianzhuang Xiao;Jiabin Li;Ch. Zhang .Mechanical properties of recycled aggregate concrete under uniaxial loading[J].Cement and Concrete Research,2005(6):1187-1194.

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The Complete Stress—strain Curve of Recycled Aggregate Concrete under Uniaxial Compression Loading

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