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《Sichuan Building Science》 2009-05
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Experimental study of on property of recycled coarse aggregate concrete

YU Bin1,2,XIONG Jingang2,FU Mingfu2,SONG Guquan2(1.Jiangxi Polytechnic College,Pingxiang 337055,China;2.Nanchang University,Nanchang 330031,China)  
Based on the experimental research and analysis of the grading distribution,water absorption,apparent density,bulk density,crushing index and appearance of the recycled coarse aggregate,and compared with natural crushed stones,this paper obtains that conclusion:the dimension size of the recycled coarse aggregate is similar,the grading distribution is poorer,the bulk density and apparent density is lower,water absorption and crushing index is higher.And according to the experimental study of comparison on the recycled coarse aggregate concrete and ordinary concrete,the paper studies the slump,compressive strength,ratio of elastic modulus to strength and freeze thaw of the recycled coarse aggregate concrete.The results show that the recycled coarse aggregate concrete has better the construction performance,mechanical properties and durability,and can be used to normal concrete structure.Especially,when the substitution ratio of the recycled coarse aggregate is 30% or lower,the basic performance of the recycled coarse aggregate concrete is similar as normal concrete.
【CateGory Index】: TU528
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