A kind of clear-water concrete surface stain cleaning agent and its preparation method and application method

Abstract

The invention discloses an agent for cleaning stains on fair-faced concrete surfaces, a preparation method and a usage method thereof, and belongs to the field of chemical building materials. The clear-water concrete surface stain cleaning agent comprises raw materials and parts by mass: 2-10 parts of oxalic acid, 5-30 parts of citric acid, 2-12 parts of ammonia water and 180-380 parts of water. The preparation method is as follows: preparing an oxalic acid solution with a mass concentration of 2% to 5% and a citric acid solution with a mass concentration of 5% to 15%; mixing the citric acid solution and ammonia water to obtain an ammonium citrate-citric acid mixed buffer solution; The oxalic acid solution and the ammonium citrate-citric acid mixed buffer solution are mixed evenly to obtain the clear-water concrete surface stain cleaning agent. Cleaning concrete with the clear-water concrete surface stain cleaner can not only effectively clean the stains and mildew spots on the clear-water concrete surface, but also retain the original performance and appearance of the concrete. The strength loss rate of the concrete is 5% lower, and the production cost is low. , The process is simple, the repeatability is good, and it is easy to operate.

Description

A kind of clear-water concrete surface stain cleaning agent and its preparation method and using method technical field [0001] The present invention belongs to the technical field of chemical building materials. In particular, it relates to a stain cleaning agent on the surface of fair-faced concrete and its preparation law and law. Background technique [0002] my country is a country with great capital construction. High-speed railways and expressways are important projects in my country's infrastructure construction. Bridges and piers constructed of railways and highways are made of fair-faced concrete throughout the road network. The large-scale components of fair-faced concrete are under construction In the process of manufacturing and service, because the concrete curing water contains iron ions, copper ions, and manganese ions, these are difficult to be used in concrete. During the curing process, it adheres to the concrete surface and forms stains; at the sam...

AI Technical Summary

Problems solved by technology

At present, the cleaning method for stains on the surface of fair-faced concrete is commonly used to clean with oxalic acid, but the cleaning effect is not good, and at the same time, due to the certain corrosion of oxalic acid on the concrete, the strength of the cleaned concrete is reduced.

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