Impermeable concrete

Abstract

The invention discloses an impermeable concrete, and belongs to the technical field of building civil engineering. The impermeable concrete is composed of cement, aggregate, fly ash, bentonite, admixtures and water, wherein the admixtures are prepared from, by mass, 30%-40% oyster shell powder, 15%-25% ethylene bis stearamide, 10%-20% triterpenoid saponin, 6%-12% triethanolamine, 5%-10% bentonite,3%-6% dodecyl dihydroxyethyl betaine and 2%-5% naphthalene sulfonate. According to the impermeable concrete, the admixtures are added, the freeze prevention and freeze resistance performance are guaranteed, at the same time, the anti-permeability performance is greatly improved, the anti-permeability grade of the impermeable concrete reaches above P12, and the impermeable concrete is especially suitable for the case of concrete impermeability requirements such as buildings in the cold north.

Description

technical field [0001] The invention relates to the technical field of architecture and civil engineering, in particular to an anti-seepage concrete. Background technique [0002] In the cold northern regions, the temperature in winter is very low, often reaching minus twenty degrees Celsius, or even minus forty or fifty degrees Celsius. In such places, higher requirements are put forward for the antifreeze performance of construction projects, especially for roads, bridges, etc. On the one hand, it is necessary to be able to smoothly construct at lower temperatures. Antifreeze performance; on the other hand, it can withstand ultra-low temperature for a long time, and it must withstand the test of repeated freezing and thawing, that is, antifreeze performance. [0003] For the demand of antifreeze and antifreeze performance, the applicant of this application has developed an antifreeze and antifreeze concrete additive. For details, please refer to the Chinese patent applica...

AI Technical Summary

Problems solved by technology

But, before the inventor carried out the anti-seepage test before the civil building construction in Shihezi, Xinjiang, its anti-seepage performance was unsatisfactory. For example, the concrete of specification example 1 in this patent application was adopted to carry out the anti-seepage test, and a group of 6 test pieces ( In 28d), when there is no water seepage, the different maximum water pressure of the four test pieces is 0.63MPa. Although the standard of impermeable concrete (≥P6) has been reached, it is necessary to improve the impermeability of concrete in places with high construction costs. very necessary

Images