Surface cleaning agent dedicated to exposed pervious concrete and preparation and application methods thereof

Abstract

The invention discloses a surface cleaning agent dedicated to exposed pervious concrete, which comprises a composition a, a coloring agent b and a filling material c, wherein the composition a comprises the following raw materials by weight: 5 to 25 % of a cement retarder, 0.5 to 2 % of a water reducer, 0.05 to 50 % of a consistence modifier, 0.05 to 0.5% of a water-retaining agent and 44 to 90 % of water; the mass of the coloring agent b is 10 to 50 % of that of the composition a; the mass of the filling material c is 50 to 200 % of that of the composition a. The surface cleaning agent is stable in property, the spray quantity is fluctuated in a certain range, the effect influence by the environmental temperature change is small, sound washing effect can be realized in 20 to 48 h after the spraying, the penetration depth is appropriate, the condition that the surface cleaning agent penetrates into root parts of stones can be prevented, the normal development of the cement paste strength at the root parts of the stones cannot be influenced, and the condition that the surface layer stones of the exposed pervious concrete fall off is avoided.

Description

technical field [0001] The invention relates to a concrete surface treatment agent, in particular to a special surface cleaning agent for exposed and permeable concrete. Background technique [0002] Permeable concrete is a kind of porous concrete made by mixing coarse aggregate, cementitious materials (including cement, mineral admixtures, etc.), water and admixtures, etc. It has the characteristics of air permeability and water permeability. [0003] Compared with ordinary permeable concrete, exposed permeable concrete adds a surface treatment process, that is, after the permeable concrete is formed, a layer of surface cleaning agent is evenly sprayed on the surface immediately to ensure that the cement paste does not condense within a certain period of time. Hardening, it is easy to wash and expose the true color of the surface layer coarse aggregate, so that it has a good natural pavement decoration effect, and does not affect the normal hardening of the cement paste at ...

AI Technical Summary

Problems solved by technology

However, at present, commercially available concrete surface cleaning agents have the disadvantages of high sensitivity to environmental temperature changes, spraying volume fluctuations, uncontrollable penetration depth, poor tinting strength, and high cost, which lead to large fluctuations in treatment effects and seriously affect exposed permeable concrete. Construction Quality

Images