关于再生混凝土强度计算公式的试验研究  

Experimental study on formula for calculating the strength of recycled concrete

作　　者：周栋梁[1] 周伟玲[1] 林玮[1] 

机构地区：[1]江苏博特新材料有限公司,江苏南京210008

出　　处：《混凝土》2009年第12期8-10,共3页Concrete

基　　金：江苏省科技厅社会发展计划基金资助

摘　　要：通过对再生混凝土配合比设计中的水灰比设计进行讨论,研究了不同强度再生骨料及水灰比对再生混凝土强度的影响。试验结果表明:再生混凝土强度与水灰比和再生骨料强度密切相关。得到的再生混凝土28d强度与灰水比、粗骨料压碎值之间的鲍罗米统一公式表明,不同的粗骨料压碎值对骨料系数A的影响较小,与骨料系数B呈现出较好的线性相关性,将实测值与计算值相比较后发现,该公式比不考虑粗骨料压碎值对再生混凝土强度影响时得到的强度公式相关性好。The water to cement ratio of mix proportion design for recycled concrete was studied in this paper, including the influence of recycled aggregate and water to cement ratio on the strength of recycled concrete.The experiment results indicated that the strength of recycled concrete was closely related to the water to cement ration and the strength of recycled aggregate.Formula for the relationship between 28d strength of recycled concrete, water to cement ration and crushing value of coarse aggregate was concluded to show that the crushing value of coarse aggregate had less influence on the aggregate parameter A ,but had good linear correlation with aggregate parameter B.By comparing the measured values and calculated values, it was concluded that the formula had better correlation with the strength than the one ignore the influence of crushing value on the strength of recycled concrete.

关 键 词：再生混凝土 再生骨料 压碎值 鲍罗米公式 

分 类 号：TU528.01[建筑科学—建筑技术科学]