Concrete doped with waste glass

Abstract

The invention relates to a chloride ion penetration-resistant concrete doped with waste glass. The chloride ion penetration-resistant concrete doped with the waste glass comprises the following raw materials: 10-30 wt% of a cementing material (cement, glass micropowder and silica fume), 3-8 wt% of fine glass aggregate, 25-40 wt% of natural sand, 35-50 wt% of gravel, 5-15 wt% of water, and an admixture, based on the total mass of 100%, wherein based on the total mass of 100%, the cementing material (cement, glass micropowder and silica fume) comprises 70-85 wt% of cement, 10-20 wt% of glass micropowder and 5-10 wt% of silica fume. The chloride ion penetration-resistant concrete doped with the waste glass is prepared by the following steps: dosing the prepared glass micropowder, fine glass aggregate, gravel, cement and silica fume in proportion, adding into a mixer, and premixing for more than 20 s; adding the weighed admixture which is 0.5-1.5 wt% of the total mass of the cementing material, and water into the premix in a water-binder ratio of 0.38-0.55, and mixing for more than 120 s. The fine glass aggregate and the glass micropowder are prepared from the waste glass.

Description

【Technical field】 [0001] The invention relates to building engineering material products, in particular to a chloride ion permeation-resistant concrete mixed with waste glass. 【Background technique】 [0002] Concrete is an indispensable and important engineering material in modern civil engineering. With the rapid development of science and technology and the improvement of people's living standards, glass is not only widely used in housing construction and people's daily life, but also has gradually developed into an indispensable new material for scientific research, production and cutting-edge technology. At the same time, it is inevitable to produce a lot of glass waste and form a large amount of waste glass. About 3.2 million tons of waste glass are produced in my country every year, accounting for 2% of the total urban domestic waste, which brings a heavy burden to the living environment of human beings. A large amount of waste glass is discarded, which not only takes...

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Problems solved by technology

However, under the action of chloride ion erosion in concrete, the volume expansion of steel bars causes concrete cracking, destroys the concrete structure, and affects the durability of concrete.

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