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一、前言用 N 型回弹仪测定混凝土的抗压强度,由于操作简便而被广泛使用。关于用回弹仪测定混凝土抗压强度的方法,坂和松井二人曾于1955年发表过有关实验结果。日本材料试验协会和混凝土强度测定法委员会根据大量的实验结果,制订并发表了“回弹仪测定混凝土抗压强度的方法指南(草案)”(以下简称《指南》)。
I. INTRODUCTION The compressive strength of concrete measured by an N-type rebound tester is widely used due to its ease of operation. With regard to the method of measuring the compressive strength of concrete with a rebound tester, Yu and Matsui have published experimental results in 1955. The Japan Material Testing Association and the Concrete Strength Test Method Committee have formulated and published a “Guideline for the determination of the compressive strength of concrete using a rebound instrument” (hereinafter referred to as “Guide”) based on a large number of experimental results.