Apparatus and test method for detecting surface permeability and maintenance effect of concrete

Abstract

An apparatus and a test method for detecting surface permeability and maintenance effect of concrete. The invention relates to a nondestructive testing method for detecting surface permeability and maintenance effect of concrete quickly in situ. The apparatus is composed of a connecting flange, a water saturation device, a negative pressure suction disk, a moisture absorption device, a moisture absorption medium, a vacuum pump, a vacuum display apparatus and a stop valve. A principle for detecting the surface permeability of concrete with the apparatus includes: vaccumizing the surface of concrete, which has been saturated and surface-dried; absorbing the moisture from the surface of the concrete by means of the moisture absorption device and moisture absorption medium; and characterizingthe surface permeability of the concrete by the ratio of mass difference of the moisture absorption medium before and after vacuumizing to the product of vacuumizing time and actual area of concrete in the suction disk. The apparatus and test method are simple in operation, can achieve quick, quantitative and nondestructive detection on the surface permeability of entity components or structures in situ, and are suitable for nondestructive detection on the surface permeability of concrete and evaluation on the maintenance effect of concrete.

Description

technical field [0001] The invention belongs to a device and a test method for testing concrete surface permeability in the field of concrete engineering, and relates to the technical field of concrete non-destructive test detection. Background technique [0002] Concrete surface permeability is one of the important indicators to evaluate the durability of concrete. The impermeability of the concrete surface is crucial to the service life of the concrete structure. Therefore, testing and analyzing the permeability of the concrete surface plays an important role in evaluating the durability of concrete. At present, the method of testing the impermeability of concrete basically needs to make impermeability test pieces. This test method is not only time-consuming and laborious, but also because the curing conditions of the solid components are quite different from the standard environment of the laboratory, so the test pieces obtained in the laboratory The anti-seepage result...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the existing practical problems such as complex and time-consuming devices for testing concrete permeability, which cannot represent the impermeability of solid concrete components, and lack of on-site testing and testing methods for evaluating concrete curing effects. The present invention provides A device and test method for on-site rapid and non-destructive testing of concrete surface permeability and evaluation of concrete curing effect

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