Concrete surface roughness testing method and tester

Abstract

The invention discloses a surface roughness testing method and a tester. The testing method comprises the steps of placing a friction assembly on a tested concrete surface so that the friction assembly rotates or slides on the tested concrete surface, measuring physical quantities such as rotating speed, torque, speed and resistance of the friction assembly in movement, calculating the characteristic quantity of the surface roughness or estimating the surface roughness of the tested concrete according to the measured physical quantities and a corresponding calculating formula. The tester for realizing the method comprises a body, a supporting seat and the friction assembly, wherein the friction area of the friction assembly is annular or rectangular. The testing method and the tester of the invention are used for testing and evaluating the concrete surface roughness and have advantages of clear principle, trustable result, wide application range and convenient operation.

Description

technical field [0001] The invention belongs to a method for detecting the surface roughness of concrete, in particular to a method for detecting the surface roughness of assembled concrete components. [0002] The invention also relates to a concrete surface roughness tester, which includes a body, a support, and a friction assembly, and the friction area of ​​the friction assembly is circular or rectangular. Background technique [0003] For prefabricated concrete components such as laminated slabs and composite beams, the roughness of the joint surface is an important factor affecting the quality of the secondary pouring. This type of joint surface is generally treated by methods such as brushing, brushing, chemical treatment or chiseling, and correspondingly, the roughness of the treated joint surface needs to be tested and evaluated. The existing surface roughness detection method is mainly the sand pouring method, that is, standard sand is spread on the surface of the...

AI Technical Summary

Problems solved by technology

The sand filling method needs to prepare standard sand, and there are many measurement steps, the remaining sand is not easy to remove, and it is only suitable for horizontal surfaces, so it is difficult to meet the actual needs of the project

There are also some detection methods that use tools such as dial gauges and sounding gauges to evaluate the surface roughness by measuring the depth of each measuring point on the concrete surface relative to the reference plane. These methods use many instrument accessories and low measurement efficiency. big error

In addition, the above-mentioned methods all use the macroscopic convex-concave depth of the surface as the only observation and evaluation index for detection, and do not consider the differences in microscopic morphology of different surfaces (even if the convex-concave depths are the same), so it is essentially impossible to accurately evaluate concrete. Roughness of joint surface

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