中文摘要：

针对钻芯法检测现场混凝土强度的特点，选用本地区有代表性的原材料，制作了C20、C25、C30、C35、C40、C45、C50、C55八个混凝土强度等级的模拟墙体，得到了620个直径50、70、100mm，高径比1：1的芯样抗压强度值。利用最小二乘方法，得到了不同直径芯样的回归方程，同时，给出了不同直径芯样与标准芯样的修正系数，为小芯样测强在本地区的推广奠定了基础。

英文摘要：

According to the characteristics of drilled core method testing strength of concrete, using the typical raw materials of local area, the simples of C25, C30, C35, C40, C45, C50, C55 of eight simulating walls are made.The values of 620 core samples compressive strength are obtained,which are the samples of 50,70, 100 mm diameter and 1：1 height-diameter ratio.Using the least squares method to obtain core samples of different diameters regression equation,meanwhile, gives a different diameter core samples of core samples with the standard correction coefficient.This study laid a foundation for small core samples measured in the region to apply.