Method for judging sand ratio of hardened concrete

Abstract

The invention discloses a method for judging the sand ratio of hardened concrete, which comprises the following steps of: firstly, drilling a core sample on a hardened concrete member, then cutting the core sample along any section by using a cutting machine, and measuring the sand ratio of the cut core sample slices by using a cross grid; at the moment, for the concrete with the same strength grade, preparing the reference concrete with different sand ratios according to the concrete mixing ratio with the known sand ratio, finally, comparing the molded reference concrete slice with the core sample slice, and when the sand ratios of the two slices are consistent or the deviation is not greater than 1%, judging that the sand ratio of the prepared reference concrete is the same as that of the hardened concrete so as to judge the sand ratio of the concrete of the concrete member. According to the method, the sand ratio is compared by using a slicing method, the sand ratio of the hardened concrete is judged according to the sand ratio of the known concrete, basic data is provided for judging the cracking reason of the hardened concrete, and the problem that the sand ratio of the hardened concrete cannot be detected is solved.

Description

technical field [0001] The invention relates to a method for judging the sand ratio of hardened concrete, which belongs to the technical field of construction engineering detection. Background technique [0002] The field of construction engineering inspection often encounters the problem of cracks in concrete components, especially the cracks in concrete components shortly after forming. To find out the reasons for cracks, we need to start from many aspects, and the sand rate of concrete is an indispensable investigation content. [0003] For unhardened (or before initial setting) concrete, the water washing method is commonly used to detect sand rate; for hardened (or after final setting) concrete, there is no effective detection method for concrete sand rate, and it is urgent to find a A detection method that can solve this problem. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the present invention provides a method for judging the sa...

AI Technical Summary

Problems solved by technology

[0003] For unhardened (or before initial setting) concrete, the water washing method is commonly used to detect sand rate; for hardened (or after final setting) concrete, there is no effective detection method for concrete sand rate, and it is urgent to find a Detection method that can solve the problem

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