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Sampling method for plastic concrete cut-off wall

A technology of plastic concrete and anti-seepage wall, applied in the direction of sampling device, etc., can solve the problem of not representing the quality of the wall, and achieve the effect of eliminating adverse effects

Inactive Publication Date: 2018-12-14
GUANGDONG TECHN COLLEGE OF WATER RESOURCES & ELECTRIC ENG
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  • Abstract
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  • Claims
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Problems solved by technology

Obviously, the sample obtained by this method is not the core sample of the plastic concrete poured into the anti-seepage wall, and the test results only represent the quality of the plastic concrete before pouring, far from representing the actual wall under the adverse conditions of pouring in the mud body weight

Method used

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0025] A method for sampling plastic concrete cut-off walls. Freezing the plastic concrete cut-off wall sampling position 1 can freeze the plastic concrete cut-off walls tightly and greatly improve the strength, preventing cracking or collapse caused by sampling, and at the same time It is convenient to take core samples that meet the requirements.

[0026] Holes were sampled when frozen to set conditions.

[0027] Preferably, corresponding to the sampling position 1, a freezing tube 2 is provided on the outer side of the plastic concrete cut-off wall, and when the temperature of the sampling position 1 is below -20°C, the core is drilled.

[0028] Preferably, there are multiple freezing pipes 2, and the multiple freezing pipes 2 are respectively surrounded on the outsi...

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Abstract

The invention discloses a sampling method for a plastic concrete cut-off wall. The method comprises the following steps of freezing a sampling position of the plastic concrete cut-off wall; and when the plastic concrete cut-off wall is frozen to a set condition, carrying out drill hole sampling. By the implementation of the frozen plastic concrete cut-off wall, a plastic concrete cut-off wall coresample can be completely fetched, and the pouring quality of the plastic concrete cut-off wall can be evaluated visually and reliably.

Description

technical field [0001] The invention relates to the field of detection of hydraulic structures, in particular to a sampling method for plastic concrete cut-off walls. Background technique [0002] Plastic concrete refers to a flexible wall material formed by replacing most of the cement in ordinary concrete with clay and (or) bentonite. The amount of cement is much lower than that of ordinary concrete, and more cementitious materials such as bentonite and clay are added. , fluid concrete suitable for underwater pouring, its compressive strength is not greater than 5MPa, and has the characteristics of low elasticity and large ultimate strain. Plastic concrete cut-off wall refers to a form of cut-off wall using plastic concrete. The total amount of plastic concrete cementitious material should not be less than 240kg / m 3 , the amount of cement should not be less than 80kg / m 3 , the amount of bentonite should not be less than 40kg / m 3 , the total amount of cement and bentoni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/08
CPCG01N1/08
Inventor 袁以美朱国武彭守良叶合欣
Owner GUANGDONG TECHN COLLEGE OF WATER RESOURCES & ELECTRIC ENG
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