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由水电三局和交通部公路科学研究所合作,经过三年多的努力,研制成功适于检测硬化混凝土强度的射钉新技术,最近通过技术鉴定,获得同行专家一致好评。此项研究成果表明:①射钉外露长度与混凝土立方体抗压强度,混凝土梁抗折强度之间存在良好的相关关系(r=0.83～0.89)。②在相同条件下,射钉外露长度与混凝土芯样强度之间的相关性,
After three years of cooperation with the Institute of Highway Science and Technology of the Ministry of Communications, after three years of hard work, a new nailing technology suitable for testing the strength of hardened concrete has been developed. Recently, it has won the praise of peer experts through technical appraisal. The results of this research show that: ① There is a good correlation between the exposed length of the nail and the compressive strength of concrete cubes and the flexural strength of concrete beams (r = 0.83 ~ 0.89). ② Under the same conditions, the correlation between the exposed length of the nailing and the concrete core-like strength,