Preparation method and application of phosphorus-magnesium-based cement concrete coating protective material

Abstract

The invention relates to the technical field of anticorrosive coating materials, in particular to a phosphorus-magnesium-based cement concrete coating protective material as well as a preparation method and the application thereof. The phosphorus-magnesium-based cement concrete coating protective material provided in the invention is prepared from the following raw materials in parts by weight, 55-90 parts of magnetite, 25-50 parts of a salt-resistant compacting agent, 20-35 parts of a mineral admixture, 0.5-2 parts of a high-efficiency water reducing agent, 5-15 parts of a composite retarder,10-25 parts of ground phosphate, 45-100 parts of quartz sand, 1-4 parts of fibers, 0.5-3 parts of a water-resistant agent and 2-5 parts of an alkaline pH stabilizer. The invention further provides apreparation method and application of the phosphorus-magnesium-based cement concrete coating protective material. The obtained phosphorus-magnesium-based cement concrete coating protective material has the advantages of being high in chloride ion permeability resistance, good in water resistance, good in gas resistance, high in durability, high in adhesive force with a base material, good in crackfollowing performance, resistant to corrosion, salt mist, alkali and aging, low in cost, environmentally friendly, simple in process and the like, and has good practical application value.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coating materials, in particular to a phosphorus-magnesium-based cement concrete coating protection material, a preparation method and an application. Background technique [0002] In recent years, concrete has been widely used in harbor projects, dams, tunnels, railways, highways, bridges, underground projects, municipal buildings, [0003] In the construction of modern projects such as airports, whether it is industrial buildings, civil buildings and public buildings on land, or engineering structures in the marine environment, reinforced concrete structures are subject to physical or chemical erosion by various environmental conditions, such as atmosphere and water. Insufficient concrete durability leads to structural failure or even damage, resulting in significant economic losses. According to research, concrete engineering has been subjected to long-term effects of chlorine salt eros...

AI Technical Summary

Problems solved by technology

With the improvement of production requirements, the traditional compacting agent does not significantly improve the crack resistance, mechanical properties and impermeability of concrete, which can no longer meet the market's expectations for compacting agents, and puts forward higher requirements for the performance of compacting agents mixed with concrete.

Patent application CN201610913916.5 discloses a waterproof concrete containing FS102 waterproof compacting agent and its construction method. FS102 waterproof compacting agent mainly includes polycarboxylate water reducer, silica sand, volcanic ash, sodium hydroxide, aminotriethanol, citric acid , additives, the preparation method of which requires multiple processes such as stirring and dissolving after adding materials, heating and boiling, cooling, and continuous stirring. The preparation process is too complicated, which is not conducive to large-scale promotion and utilization

Images