an impermeable concrete

Abstract

The invention discloses an anti-seepage concrete and relates to the technical field of concrete. In parts by weight, it includes the following components: 200-240 parts of cement, 76-91 parts of water, 120-160 parts of slag, 70-90 parts of fly ash, 6-8 parts of water reducing agent, and 3-5 parts of gypsum . Fly ash can reduce the amount of cement and reduce production costs; the water reducer is a concrete admixture that can reduce the amount of mixing water while maintaining the slump of the concrete basically unchanged. It has a dispersing effect and improves the fluidity of the concrete mixture; gypsum has a certain retarding effect, which makes the concrete setting process slow down, so that there are fewer cracks on the surface of the finished concrete product, so it can improve the crack resistance and anti-cracking resistance of the concrete to a certain extent. seepage performance. In addition, under the synergistic effect of fly ash, water reducing agent and gypsum, the hydration process of concrete can be slowed down appropriately, the slump of concrete is smaller, and the cracks caused by internal stress are less, so the final resistance Excellent permeability.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to an anti-seepage concrete. Background technique [0002] Concrete is an artificial stone made of cement as the main cementitious material, mixed with water, sand, stones, chemical admixtures and mineral admixtures when necessary, mixed in appropriate proportions, uniformly stirred, compacted and cured. [0003] The existing Chinese patent with publication number CN110105024A provides a kind of ordinary concrete, comprising the following components in parts by mass: 13-17 parts of water; 18-22 parts of Portland cement; 10-15 parts of limestone powder; 100 parts of limestone -105 parts; 80-85 parts of sand; 0.5-1 part of fumed silica; 1-1.5 parts of gelatin; 2-2.5 parts of water reducing agent. By adding fumed silica, water reducing agent and gelatin, it is beneficial to improve the consistency of ordinary concrete, so that sand and stone are not prone to bleeding ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: in the actual use process, the cement setting and hardening speed is still fast, so that the concrete shrinks quickly, and it is easy to generate large stress inside, causing cracks, thereby affecting the impermeability of the concrete

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