龄期大于1000d混凝土抗压强度检测案例浅析

Analysis of Concrete Compressive Strength Testing Cases With Age Over 1000 Days

龄期>1 000 d混凝土抗压强度推定方法现有钻芯法和钻芯修正法,钻芯修正法的修正方式又分为总体修正量、对应样本修正量、对应样本修正系数等。论文案例中混凝土龄期最长为2 651 d,案例中钻芯修正法采用对应样本修正量的方式,每一检验批中的芯样抗压强度值采用格拉布斯检验法和狄克逊检验法对离群值进行剔除,对龄期>1 000 d混凝土抗压强度钻芯修正法和钻芯法进行对比分析,得出钻芯修正法与钻芯法的差异性,并确定钻芯修正法在混凝土抗压强度检测中对于结果修正是必要的。

The drilled coring method and the rebound-drilled core correction method are used to estimate the compressive strength of concrete aged more than 1000 days. The rebound-drilled core correction method is divided into the overall correction,the corresponding sample orrection,the corresponding sample correction coefficient,etc. The longest age of concrete in this case is 2651d. The rebound-drilled core correction method in this case adopts the corresponding sample correction,the compressive strength values of core samples in each inspection lot shall be removed from the outliers by means of Grubbs test and Dixon test,the rebound-drilled core correction method and the drilled coring method for compressive strength of concrete older than 1 000 days are compared and analyzed,the difference between the rebound-drilled core correction method and the drilled coring method is obtained,and it is determined that the rebound-drilled core correction method is necessary for the result correction in the concrete compressive strength test.