Method for detecting solid concrete impermeability by core boring sampling

A technology of concrete structure and impermeability, which is applied in the direction of measuring device, material inspection product, permeability/surface area analysis, etc., to achieve the effect of easy operation

Inactive Publication Date: 2008-03-26
CHINA CONSTR FOURTH ENG DIV +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for core drilling and sampling to detect the impermeability of solid concre

Method used

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  • Method for detecting solid concrete impermeability by core boring sampling

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Embodiment

[0031] Embodiment, the method for the impermeability of this drill core sampling detection solid concrete structure is characterized in that the detection steps are as follows:

[0032] Step 1 Referring to Fig. 1, a concrete cylinder 1 of Φ160mm is taken out by core drilling method on the solid concrete structure to be tested, and the length of the concrete cylinder is ≥200mm.

[0033] Step 2 Referring to FIG. 2 , the above-mentioned concrete cylinder is cut and processed into a cylindrical core material 2 of Φ160mm×150mm.

[0034] Step 3 Referring to FIG. 3 , place the cylindrical core material 2 of Φ160mm×150mm in the center of the cylindrical test mold 3 . For increasing stability, the bottom surface of the above-mentioned cylindrical test mold 3 can be larger than the diameter of the cylinder to form a circle of flanges 6 .

[0035] Step 4 Referring to FIG. 4 , the grout 4 with high strength, impermeability and good fluidity is injected into the gap between the cylindrica...

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Abstract

A kind of drill sample method to detect the impermeability of solid concrete structure, using the drill sample method to get the concrete cylinder in the detected solid concrete structure; cuts the concrete cylinder into cylinder core board; puts the cylinder core board in the center of the cylinder test module; pulls the grouting material in the space between the cylinder test module and the cylinder core board to mold; uses the steel wire brush brush away the grout film in the end after demoulding, then doing standard maintain to it; takes six cylinder impermeability piece as a group, besmears a flat of melt airproof material in their side face, and then push down to the sample cover which has been preheat by the oven, test them at the impermeability instrument; the water pressure of the test begin at 0.1 megapascal, observe the water penetration situation of the cylinder impermeability piece end at any moment, when three of the six cylinder impermeability piece water penetrates, stopping the test, record the water pressure value of the time, calculates the impermeability grade according to the formula. It can really reflect the impermeability of solid concrete.

Description

(1) Technical field [0001] The invention relates to a detection method of concrete performance, in particular to a detection method of concrete impermeability performance. (2) Background technology [0002] For new concrete structures, the concrete strength can be evaluated not only through on-site testing, but also through the evaluation of the compressive strength of the test blocks cured in the same period. However, the anti-seepage index (impermeability label) of newly-built concrete structures with anti-seepage requirements can only be prepared as impermeability test pieces during the design of the concrete mix ratio, according to the GBJ82-85 standard method of "Test Methods for Long-term Performance and Durability of Ordinary Concrete" Carry out impermeability label testing, concrete strength and impermeability label can only issue concrete construction mix ratio when the concrete strength and impermeability label meet the design requirements. When the concrete projec...

Claims

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Application Information

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IPC IPC(8): G01N33/38G01N7/10G01N15/08
Inventor 帅颂宪王勇
Owner CHINA CONSTR FOURTH ENG DIV
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