粤西地区花岗岩机制砂混凝土回弹专用曲线的建立

The Establishment of Special Rebound Curve of Granite Machine-Made Sand Concrete in Western Guangdong

针对目前花岗岩机制砂在粤西地区使用中强度与回弹值不匹配的现象,通过多元函数回归建立专用测强曲线的方式进行研究。结果表明在专用曲线有更低的偏差,尤其是在低回弹值时,专用曲线的建立及推广可降低强度浪费,为花岗岩机制砂混凝土的工程应用积累经验。

At present,in view of the phenomenon that the strength and rebound value of granite machinemade sand do not match in the use of western Guangdong,this paper studies the way of establishing special strength measurement curve by multivariate function regression.The results show that there is lower deviation in the special curve,especially in the case of low rebound value,the establishment and promotion of special curve can reduce the waste of strength and accumulate experience for the engineering application of granite machine-made sand concrete.