Concrete protective sol

Abstract

The invention relates to the technical field of concrete protective materials, in particular to a concrete protective sol. The concrete protective sol comprises the following components in parts by mass: 55 to 65 parts of a cementing material, 10 to 40 parts of sol-state nano silicon dioxide, 2 to 6 parts of a nano cement additive, 2 to 10 parts of an air-entraining and water-reducing agent, 0.5 to 1.0 part of a water-retentive and thickening agent, 0.5 to 1.2 parts of a high-molecular polymer, 0.2 to 1.2 parts of a calcium ion chelating agent, 0.3 to 0.6 parts of a defoaming agent, 0.3 to 0.6 parts of a wetting dispersant, 0.5 to 1.2 parts of a stabilizer, 3 to 9 parts of a modifier and 120 to 150 parts of de-ionized water. The concrete protective sol has the beneficial effects that firstly, the sol-state nano silicon dioxide, the nano cement additive, the modifier and the an air-entraining and water-reducing agent are mixed for use, so that the deficiency of low gap compactness in concrete is improved; meanwhile, a penetrating agent, namely alkylalkoxy silane, and a modified compound of alkylalkoxy silane can penetrate the concrete, so that the concrete structure is improved and the technical deficiencies of cracking, low strength, short service life and the like of the concrete are radically overcome.

Description

technical field [0001] The invention relates to the technical field of concrete protection materials, in particular to a concrete protection sol. Background technique [0002] The infrastructure investment scale of my country's cement concrete construction is huge, the maintenance cost is quite high, and the demand for repair materials is also very large. At present, the protection of concrete structures mostly adopts the method of coating protective materials on the outer surface of concrete. Among permeable materials, such as: materials with sodium silicate as the main component, coating or injecting silicon dioxide at waterproof and maintenance places The main component of sodium nitrate is to achieve the purpose of protecting the concrete structure. However, the material has problems such as fast reaction speed in concrete, poor permeability, and formation of surface membranes that are easy to wear and tear due to the main sodium monosilicate. [0003] The protection o...

AI Technical Summary

Problems solved by technology

Usually concrete is composed of granular coarse aggregate, fine aggregate and cement hydrate. During the pouring process and use, due to various reasons, some quality problems often occur and affect its service life.

In the process of pouring and curing, due to cement hydration and water evaporation, it is easy to cause concrete cracking, resulting in poor concrete strength development

Moreover, in the application of concrete in actual engineering, it is often exposed to various harsh environments, such as the intrusion of corrosive media around the environment, changes in environmental temperature and humidity, freeze-thaw cycle damage, and some concrete projects are often subject to heavy load wear. External conditions will seriously affect the service life of concrete

Therefore, the use of a simple concrete curing agent is difficult to achieve the concrete protection function during pouring.

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