混凝土芯样与试块强度试验的比较方法

作者：柳瑞杰

单位： 天津港湾工程研究所

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出版年,卷(期):页码：1992,16(2):49-53

摘要：

本文明确指出误差的计算不能用来进行芯样强度和试块强度数据之间的比较。它们之间的比较应以差值、相对差值或折算系数等术语来表述。虽然二者相对差值可能很小,但不应以试验误差为理由而舍弃。通过对文献[1]的试验数据的重新整理发现三种不同直径芯样强度的离散程度很接近,因此φ55mm芯样可靠性并不比大直径芯样差。

The paper clearly puts forward that error calculation should not be applied for the comparison between the strength data of core specimen and standard cube specimen. It should be expressed by D—value, relative D—value or conversion coefficient. Although the relative D—value may be near zero, it should not be neglected with the reason of tests error. With the re-analysis on the tests data presented in reference (1), it is discovered that the variation coefficients of core specimens of three different diameters have no obvious difference, so the reliability of φ55mm core specimen is not worse than those of larger core specimens.

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参考文献：

[1] 方士源:“钻取芯样法、回弹法测强与混凝土标准试块测强的比较”,港口工程.1991年第3期。 [2] Sidney Mindess, J. Francs Young, Concrete, Prentice--Hall Inc, 1981, [3] 《混凝土强度检验评定标准》(GBJ107-87)

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