抗剪法与回弹法检测混凝土抗压强度的试验研究

Experimental study on detecting concrete compression strength with shear-resistance method and rebound method

采用抗剪法这种新型的混凝土抗压强度检测方法,对钻取混凝土小直径芯样的抗剪强度与抗压强度的相关性进行试验研究,并与常用的回弹法进行对比。结果表明:拟合得到混凝土的抗剪强度与抗压强度之间不同的测强曲线,抗剪法采用幂函数与线性函数表达比较合理,检测精度高于回弹法,抗剪法评定混凝土抗压强度具有精度高、操作方便、人为影响因素小、适用范围广等特点。

This paper using the shear-resistance method to study the relationship between shear strength and compressive strength of the concrete with drilling small core samples,and compared with the rebound method commonly used.The test results show that：different fitting strength curves are obtained between the concrete shear strength and compressive strength,the shearresistance method using a power function and a linear function expression is reasonable, detection accuracy is higher than the rebound method,using the shear method to assess the compressive strength of concrete is lfigher accuracy,more handiness,mote convement and wide application scope,and has less damage to components,human factors,etc.