Reinforced concrete material with high corrosion resistance and preparation method thereof

Abstract

A reinforced concrete material with high corrosion resistance and a preparation method thereof belong to the concrete material field. The reinforced concrete material with high corrosion resistance of the invention is mainly obtained by uniformly mixing and stirring a cementing material, coarse and fine aggregates, water, a rusty retardant agent, and a water reducer; the cementing material comprises portland cement and fly ash; the rusty retardant agent is prepared by well mixing amino carboxylic acid, dimethyl ethanolamine and calcium molybdate with a mass ratio of 1:2:2 and adding the mixture into water, and the mass concentration range of the mixture is 20%-50%. The proportional ranges of the components are: 300-500 kg / m3 of cement; 100-150 kg / m3 of fly ash; 150-210 kg / m3 of water; 400-700 kg / m3 of fine aggregates; 1000-1200 kg / m3 of coarse aggregates; 2-4 kg / m3 of high-efficient water reducer; and the mixing amount of the rusty retardant agent is 2%-5% of the mass of the cementingmaterial. Compared with common reinforced concrete, the reinforced concrete of the invention has significantly improved steel bar corrosion resistance, and excellent concrete workability, and is widely applicable to basic engineering and underground space structures.

Description

technical field [0001] The invention belongs to the technical field of concrete materials, and in particular relates to a high-corrosion-resistant reinforced concrete material and a preparation method thereof. Background technique [0002] With the rapid development of my country's urbanization process, the urban ground space is increasingly crowded, and the effective use of underground space has become an important strategic policy for urban development. Urban underground space includes subways, underground highways, underground pedestrian crossings, underground parking lots, underground pipelines, underground commercial service facilities, and underground civil air defense facilities. Most of the underground infrastructures require a huge one-time investment, and are often located in the central area of ​​the city. Their maintenance, repair, and reconstruction are often costly. The poor durability of underground infrastructure shortens its maintenance cycle and service li...

AI Technical Summary

Problems solved by technology

Corrosion of steel bars leads to concrete swelling and cracking, which reduces the bearing capacity of the structure and causes premature failure of the concrete structure

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