现浇混凝土抗压强度确定新法

DETERMINATION OF COMPRESSION STRENGTH OF CAST-IN-PLACE CONCRETE

传统确定混凝土抗压强度的做法分为三个阶段:即留置试件确定结构混凝土强度;采用回弹法确定结构混凝土强度;采用钻芯法确定结构混凝土强度。这三个阶段均存在一些问题。针对存在的问题,提出两种改进方法:要修改混凝土试件取样标准及明确检验批的验收标准;修正钻心法,确定结构混凝土强度。

Traditional method for determination of compression strength of concrete contains the following three steps:prepare sample to determine strength of structural concrete;use rebound method to determine strength of structural concrete;use core-drilling method to determine concrete strength.But there are some problems in all of these three steps.Considering these problems,two improvement methods are put forward,including modification of standard for concrete sampling and clarification of acceptance standard for inspection batch,and improvement of core-drilling method.