钻芯法检测混凝土劈裂抗拉强度的试验研究

采用钻芯法检测混凝土劈裂抗拉强度,混凝土劈裂抗拉检测采用φ100×200 mm、φ100×100 mm、φ75×150 mm、φ75×75 mm四种芯样,试验证明：混凝土芯样劈裂抗拉强度与混凝土标准立方体试块劈裂抗拉强度密切相关,采用不同直径芯样应考虑尺寸效应的影响。建议优先采用φ100的芯样试件,其尺寸效应系数为0.95。

Experimental investigation of Test on Splitting Fensile Strength of Concrete By Drilling core

Test on splitting fensile strength of concrete by drilling core is introduced. The dimensions of test core specimens are φ100×200mm、φ100×100mm、φ75×150mm、φ75×75mm. The test results indicate that there is osculating correlation of splitting fensile strength of concrete between drilling cores and cube coupons,at the same time,dimensional effect should be taken into consideration using different diameter cores during the test. According to the test research results,priority use of the dimension of main core specimens φ100 is suggested,whose dimensional effect coefficient is 0.95.