1. The utility model provides a concrete entity is sealing device for impermeability test which characterized in that: the concrete anti-permeability testing mold comprises a concrete anti-permeability testing mold (2) and a rubber matrix (3), wherein the rubber matrix (3) is arranged inside the concrete anti-permeability testing mold (2), and a concrete solid core sample (1) to be tested is arranged in the rubber matrix (3);

the vertical axis of the concrete solid core sample (1), the rubber matrix (3) and the vertical axis of the concrete impermeability test mold (2) are the same axis;

the concrete solid core sample (1) is a specified size core sample taken out by drilling a concrete solid, and is a cylindrical core sample with the bottom diameter of 100mm and the height of 150 mm;

the rubber tire body (3) is a tire body with a trapezoidal section, and adopts PJ-220 type water-swelling water-stop glue meeting JG/T312-2011 standard;

the rubber tire body (3) is a trapezoidal section body with specified size, the diameter of the upper opening of the tire body is 175mm, the diameter of the lower opening of the tire body is 185mm, the height of the tire body is 150mm, and the center of the tire body is a cylindrical hole with the diameter of 100 mm;

the concrete impermeability test mold (2) adopts a trapezoidal test mold with an upper opening diameter of 175mm, a lower opening diameter of 185mm and a height of 150 mm.

2. The sealing device for concrete impermeability test of claim 1, wherein the rubber matrix (3) is adhered to the inner wall of the concrete impermeability test mold (2) by double faced adhesive tape.

3. A method for testing impermeability of concrete using the sealing device according to claim 1 or 2, comprising the steps of:

(1) drilling a concrete entity according to the size requirement to obtain a group of samples, namely concrete entity core samples;

(2) placing the concrete solid core sample into a rubber matrix in the sealing device, placing the concrete impermeability test mold with the concrete solid core sample in a water tank, adding tap water into the water tank to enable the water level to be 1/2-3/4 of the height of the test mold, and standing the test mold in the water tank for 3 days until the water level can not submerge the height of the test mold;

(3) placing the test mould after standing in water into a concrete impermeability tester for impermeability test, and then determining the impermeability grade of a core sample according to a 6.2 step-by-step pressurization method in the test method standard GB50082-2009 for long-term performance and durability of common concrete;

(4) after the test is finished, the concrete impermeability test die with the core sample is placed in an oven for drying at 65 +/-5 ℃ for less than or equal to 6h, and then the core sample is taken out.

4. The impermeability test of claim 3 wherein the set of concrete solid core samples of step (1) is 6.

5. A method of impermeability test according to claim 3 wherein during the test in step (3) water seeps out from the periphery of the core sample and the rubber carcass needs to be replaced.

Background

At present, the concrete material is widely applied to a plurality of fields of house construction, traffic, railways, urban rails, municipal engineering and the like in China, and is one of the largest building materials used in the engineering field. As is well known, due to the continuous development of new materials and new processes, the waterproof design of the concrete structure entity in China at present mainly depends on the self-waterproofing of concrete, and the impermeability grades of different concrete structure parts directly represent the waterproof grades of corresponding engineering parts; whether the anti-permeability grade of concrete meets the design requirement is mainly realized by detecting anti-permeability test pieces of concrete in the same batch, in the practical process, the concrete anti-permeability test pieces are often unqualified due to the reasons of manufacturing the concrete anti-permeability test pieces and the like, and the concrete anti-permeability detection method specified in the standard of test methods for long-term performance and durability of common concrete GB50082-2009 cannot verify and detect concrete entities.

The patent CN201610223488.3 concrete impermeability test method and test device thereof discloses a concrete impermeability test device and test method, the device of the invention solves the problem that the sealing between a sample and a rack test mould is difficult during the impermeability test of a concrete sample, and improves the success rate of the impermeability test, but the device aims at the impermeability test in the concrete preparation process, and cannot perform impermeability test on concrete entities.

In view of the above-mentioned defects, the present designer has made active research and innovation to create a sealing device and an impermeability test method for concrete impermeability test, so as to solve the problem that no detection device for directly and effectively detecting the impermeability of concrete is available, and have an effective social value.

Disclosure of Invention

The invention aims to create a sealing device for concrete entity impermeability test and an impermeability test method, which can effectively verify and detect the impermeability of a concrete entity by combining with the existing impermeability test method, thereby truly reflecting the impermeability of the concrete entity and avoiding engineering quality disputes or misjudgments caused by the undetectable impermeability of the concrete entity.

The invention provides a sealing device for concrete entity impermeability test, which comprises a concrete impermeability test mold and a rubber matrix, wherein the rubber matrix is arranged in the concrete impermeability test mold, and a concrete entity core sample to be tested is arranged in the rubber matrix;

the vertical axis of the concrete solid core sample, the rubber matrix and the vertical axis of the concrete impermeability test mold are the same axis;

the rubber tire body is a trapezoidal section tire body, and adopts PJ-220 type water-swelling water-stop glue meeting JG/T312-2011 standard;

the material performance of the rubber carcass is required to meet the related technical index requirements of the type PJ-220 in Water-swelling and Water-stopping adhesive JG/T312-2011;

the rubber matrix is adhered to the inner wall of the concrete impermeability test mold through double faced adhesive tapes, so that the rubber matrix is fixed on the inner wall of the concrete impermeability test mold.

The rubber matrix adopted in the invention mainly utilizes the self water-swelling property, so that the tight nesting of the concrete entity core sample and the concrete impermeability test mould is realized, and finally, the concrete entity can not be verified and detected according to the concrete impermeability detection method specified in the standard GB50082-2009 of the test method for the long-term performance and the durability performance of common concrete, so that the method for truly detecting the impermeability grade of the concrete entity is realized.

The concrete impermeability test mold adopts a trapezoidal test mold with an upper opening diameter of 175mm, a lower opening diameter of 185mm and a height of 150 mm.

The concrete solid core sample is a specified size core sample which is taken out from a concrete solid drilled hole and is a cylindrical core sample with the bottom diameter of 100mm and the height of 150 mm.

The rubber tire body is a trapezoidal section body with specified size, the diameter of an upper opening of the tire body is 175mm, the diameter of a lower opening of the tire body is 185mm, the height of the tire body is 150mm, and the center of the tire body is a cylindrical hole with the diameter of 100 mm.

The invention also provides a concrete impermeability test method adopting the sealing device for concrete entity impermeability test, which comprises the following steps:

(1) drilling a concrete entity according to the size requirement to obtain a group of samples, namely concrete entity core samples;

(2) placing the concrete solid core sample into a rubber matrix in the sealing device, placing a concrete impermeability test mold with the concrete solid core sample in a water tank, adding tap water into the water tank to enable the water level to be 1/2-3/4 of the height of the test mold, and standing the test mold in the water tank for 3 days; the rubber matrix can absorb enough water, the tight connection of the tyre wall, the core sample and the concrete impermeability test mould is realized after expansion, the height of the test mould cannot be submerged by the water level, and the situation that the water on the surface of the core sample cannot be distinguished before the test or leaked after the test in the later test process is prevented;

(3) placing the test mould after standing in water into a concrete impermeability tester for impermeability test, and then determining the impermeability grade of a core sample according to a 6.2 step-by-step pressurization method in the test method standard GB50082-2009 for long-term performance and durability of common concrete;

(4) after the test is finished, the concrete impermeability test die with the core sample is placed in an oven for drying at 65 +/-5 ℃ for less than or equal to 6h, and then the core sample is taken out.

In the step (1), one group of concrete solid core samples is 6.

The rubber tire body can be repeatedly used, if the rubber loses elasticity due to aging after being used for a certain number of times, water seeps from the periphery of the core sample in the test process of the step (3), and the rubber tire body needs to be replaced.

The technical scheme of the invention has the following advantages:

the sealing device is adopted to perform a penetration test on the concrete solid core sample, the water-swelling characteristic of the water-swelling rubber is used, the concrete solid core sample can only be taken out of a cylindrical test piece, the existing concrete penetration resistance (step-by-step pressurization method) method is combined to solve the difficult problem of concrete solid penetration resistance, the device is simple and easy to operate, the purposes of good sealing effect and high detection efficiency are achieved, and meanwhile, the economic loss caused by the fact that the concrete solid body verification cannot be performed due to unqualified concrete penetration resistance test pieces is avoided.

Drawings

FIG. 1 is a schematic view of the concrete impermeability test device and a concrete solid core sample according to the present invention.

FIG. 2 is a schematic view of a concrete core sample according to the present invention.

Fig. 3 is a schematic view of the concrete impermeability test mold of the invention.

FIG. 4 is a schematic view of a rubber carcass according to the present invention.

Fig. 5 is a schematic view of the impermeability test sample detection device of the present invention.

In fig. 1-5, each is labeled: 1 concrete solid core sample, 2 concrete impermeability test module, 3 rubber matrix, 4 concrete impermeability instrument.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

The invention provides a sealing device for concrete entity impermeability test, which comprises a concrete impermeability test mold 2 and a rubber matrix 3, wherein the rubber matrix 3 is arranged in the concrete impermeability test mold 2, and a concrete entity core sample 1 to be tested is arranged in the rubber matrix 3;

the vertical axis of the concrete solid core sample 1, the vertical axis of the rubber matrix 3 and the vertical axis of the concrete impermeability test die 2 are the same axis;

the rubber matrix 3 is adhered to the inner wall of the concrete impermeability test die 2 through double faced adhesive tapes;

the rubber tire body 3 is a tire body with a trapezoidal section, and adopts PJ-220 type water-swelling water-stop glue meeting JG/T312-2011 standard;

the material performance of the rubber carcass 3 should meet the related technical index requirements of the type PJ-220 in Water-swelling and Water-stopping adhesive JG/T312-2011.

The rubber matrix adopted in the invention mainly utilizes the self water-swelling property, so that the tight nesting of the concrete entity core sample and the concrete impermeability test mould is realized, and finally, the concrete entity can not be verified and detected according to the concrete impermeability detection method specified in the standard GB50082-2009 of the test method for the long-term performance and the durability performance of common concrete, so that the method for truly detecting the impermeability grade of the concrete entity is realized.

The concrete impermeability test mold 2 is a trapezoidal test mold with an upper opening diameter of 175mm, a lower opening diameter of 185mm and a height of 150 mm.

The concrete solid core sample 1 is a specified size core sample which is taken out from a concrete solid drilled hole and is a cylindrical core sample with the bottom diameter of 100mm and the height of 150 mm.

The rubber carcass 3 is a trapezoidal section body with specified size, the diameter of the upper opening of the carcass is 175mm, the diameter of the lower opening of the carcass is 185mm, the height of the carcass is 150mm, and the center of the carcass is a cylindrical hole with the diameter of 100 mm.

A concrete impermeability test method adopting the sealing device for concrete entity impermeability test of the invention comprises the following steps:

(1) drilling a concrete entity according to the size requirement to obtain a group of samples, namely concrete entity core samples;

(2) placing the concrete solid core sample into the rubber matrix in the detection device, placing the concrete impermeability test mold with the concrete solid core sample in a water tank, adding tap water into the water tank to enable the water level to be 1/2-3/4 of the height of the test mold, and standing the test mold in the water tank for 3 days; the rubber matrix can absorb enough water, the tight connection of the tyre wall, the core sample and the concrete impermeability test mould is realized after expansion, the height of the test mould cannot be submerged by the water level, and the situation that the water on the surface of the core sample cannot be distinguished before the test or leaked after the test in the later test process is prevented;

(3) placing the test mould after standing in water into a concrete impermeability tester for impermeability test, and then determining the impermeability grade of a core sample according to a 6.2 step-by-step pressurization method in the test method standard GB50082-2009 for long-term performance and durability of common concrete;

(4) after the test is finished, the concrete impermeability test die with the core sample is placed in an oven for drying at 65 +/-5 ℃ for less than or equal to 6h, and then the core sample is taken out.

In the step (1), one group of concrete solid core samples is 6.

The rubber tire body can be repeatedly used, if the rubber loses elasticity due to aging after being used for a certain number of times, water seeps from the periphery of the core sample in the test process of the step (3), and the rubber tire body needs to be replaced.

The sealing device for the impermeability test of the concrete entity is adopted, so that the impermeability test of the concrete entity can be effectively verified and detected by combining the existing impermeability test method, thereby truly reflecting the impermeability performance of the concrete entity and avoiding engineering quality disputes or misjudgments caused by the fact that the impermeability of the concrete entity cannot be detected.