Sealant for concrete anti-permeability performance detection, preparation method thereof and concrete anti-permeability performance detection method

Abstract

The invention relates to the technical field of concrete detection, and particularly discloses a sealant for concrete anti-permeability performance detection, a preparation method thereof and a concrete anti-permeability performance detection method. The sealant for concrete anti-permeability performance detection is prepared from the following raw materials: butter, a powder admixture, inorganic hydrated salt and a thickening agent. The preparation method comprises the following steps: mixing the butter, the admixture, the inorganic hydrated salt and the thickening agent, and performing stirring for 3-5 minutes to obtain the sealant. The concrete anti-permeability performance detection method comprises the following steps: (1) uniformly smearing the sealant on the side surface of a test piece, and uniformly smearing an astringency increasing agent on the inner wall of a test mold to prepare a test piece to be tested; and (2) vertically pressing the test piece to be tested into the test mold, and then measuring the penetration height of the test piece to be tested. The sealant disclosed by the invention has a good sealing effect on the concrete test piece under the condition of relatively large temperature difference in winter and summer, so that the sealant has relatively good temperature applicability.

Description

technical field [0001] The application relates to the technical field of concrete detection, more specifically, it relates to a sealant for concrete impermeability detection, a preparation method thereof, and a concrete impermeability detection method. Background technique [0002] According to "Standards for Test Methods of Long-term Performance and Durability of Ordinary Concrete" (GBT50082-2009) and "Standards for Test Methods of Basic Properties of Building Mortar" (JGJ / T70-2009), the impermeability of concrete and mortar is the key to evaluate its durability. An important indicator obtained through the impermeability test of concrete and mortar. To study the impermeability of concrete, it is necessary to ensure that the side surface of the concrete specimen has a good seal in the impermeability test to prevent the test medium from penetrating from the side surface of the test sample, thereby improving the accuracy of the final test data. [0003] At present, when seali...

AI Technical Summary

Problems solved by technology

But in winter, due to the cold weather, the fluidity of butter is poor, so it is necessary to increase the amount of cement to ensure that the sealant has suitable fluidity, and once the amount of cement is changed, it will affect the sealing effect of the sealant, so it is necessary to Repeatedly adjust the amount of cement and butter to obtain a sealant with suitable fluidity and good sealing effect; in summer, due to the hot weather, the fluidity of butter is obviously enhanced, and when the test piece is tested, the sealant formed The cementitious sealing material is easily squeezed out from between the test block and the steel mold by water pressure, so that the sealing effect cannot be achieved, so it is also necessary to improve the ratio of butter and cement

[0004] In view of the above-mentioned related technologies, the inventor believes that the sealant in the related art is greatly affected by the ambient temperature during use, so it is necessary to frequently adjust the proportion of butter and cement to ensure that the sealant meets the use requirements. Therefore, the inventor believes that The sealant in the related art has the defect of poor temperature applicability

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