A kind of concrete anti-leakage paste and its preparation method and application

Abstract

The invention discloses a concrete leakage-proof paste, which is mainly prepared from the following raw materials in percentage by mass: 10 to 20 percent of cement, 2 to 5 percent of coagulant, 3 to 8 percent of flocculant, 20 to 25 percent of binder, 45 to 60 percent of expansion component, and 5 to 15 percent of water. The concrete leakage-proof paste can be applied in a sealing material for a concrete permeability resistance test, also can be applied in a crack repair anti-seepage structure in engineering, has a good sealing anti-seepage effect and stable performance, and can fully meet the anti-seepage requirement.

Description

technical field [0001] The invention relates to a concrete leak-proof paste and its preparation method and application, belonging to the field of building materials. Background technique [0002] The impermeability test is mainly used to detect the waterproof performance of concrete after hardening to determine its impermeability grade. At present, the national standard GB50082-2009 "Ordinary Concrete Long-Term Performance and Durability Method Standard" describes that the sealing material used in the concrete impermeability test is usually mixed with cement mixed with butter, or paraffin mixed with a small amount of rosin. Among them, paraffin wax and rosin are the most common sealing materials. The sealing method is to heat and mix paraffin wax and rosin in an oven at 60°C, and apply the melted paraffin wax and rosin mixture evenly on the cone surface of the impermeability test block, and wait until the temperature drops to room temperature. After the paraffin rosin mixtu...

AI Technical Summary

Problems solved by technology

The above are the sealing materials and sealing methods mainly used in the concrete impermeability test, which have certain limitations, the sealing effect is not good, and the leakage of the seal is very easy to cause the failure of the impermeability test, and the reliability of the impermeability test data not high enough

[0003] At present, the impermeability test mainly adopts the sealing method suggested in the standard GB50082-2009. Although the standard mentions that a more reliable method can be used, due to the influence of the test standard guidance, the sealing material and sealing method have not been further improved at present, and the sealing method is still used. The sealing method clearly stated in the standard conducts the impermeability test

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