Cement-based material cracking resistance quick testing device

Abstract

The invention discloses a cement-based material cracking resistance quick testing device which comprises a cracking resistant device and a plurality of strain gauges connected with a computer circuit,the cracking resistant device comprises a stepped bottom plate, an annular outer formwork and an inner steel ring, the annular outer formwork and the inner steel ring are concentrically arranged on the stepped bottom plate from outside to inside, the strain gauges are uniformly arranged on the inner circumferential wall of the inner steel ring circumferentially, a cracking inducing component is arranged on the outer circumferential wall of the inner steel ring. The quick testing device is characterized in that the cracking inducing component comprises an annular ribbed rebar and a plurality of steel angles, the steel angles are uniformly arranged on the outer peripheral wall of the inner steel ring peripherally, and the annular ribbed rebar is fixed on the outer peripheral wall of the inner steel ring. The quick testing device is simple in structure and convenient to operate, and the problem that existing circular cracking resistance devices are generally long in experimental period and difficult-in-observing of cracks.

Description

technical field [0001] The invention relates to performance testing of building materials, in particular to a rapid testing device for crack resistance of cement-based materials. Background technique [0002] Cement-based materials such as mortar and concrete are the most commonly used building materials in the field of construction engineering, and their superior performance has been generally recognized by people in the industry. With the rapid acceleration of my country's infrastructure construction, large quantities of cement-based materials such as mortar and concrete have been widely used. At the same time, the characteristics of cement mortar or concrete that are easy to crack in actual engineering are also exposed. The appearance of cracks in engineering structures, on the one hand, affects the beauty of the building, on the other hand, the appearance of cracks greatly reduces the bearing capacity of the building structure, and even provides a channel for harmful sub...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art, provide an evaluation device for quickly measuring the crack resistance of cement-based materials, which can solve the problems of long test period and unsuitable observation of cracks in the existing evaluation methods

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