Steel slag radiation shield concrete and preparation method thereof

Abstract

The invention relates to a steel slag radiation shield concrete and a preparation method thereof. The steel slag radiation shield concrete comprises the following components in parts by weight: 1 part of cement, 0.4-0.5 part of water, 4-8 parts of steel slag sand, 0.01-0.03 part of water reducing agent, 0.01-2 parts of barite and 0.01-0.03 part of colemanite, wherein the steel slag sand comprises two kinds of steel slag sand with the particle size ranges of 0-5mm and 5-25mm according to the proportion of 1-3:1-3, and the f.CaO content of the steel slag sand is less than or equal to 3%; the water reducing agent is selected from an FDN water reducing agent and a polycarboxylate water reducing agent; and the apparent density of the steel slag radiation shield concrete is greater than 2900kg/m<3>. The steel slag radiation shield concrete of the invention has good compactness, large apparent density and high strength and meets the requirements of the radiation shield concrete; the invention changes waste steel slag into valuable resources, reduces the environment pollution, simultaneously lowers the consumption of mineral materials, and saves natural resources; and in addition, the steel slag used in the invention has abundant resources, low price and obvious economic benefit.

Description

technical field [0001] The invention relates to the field of radiation-proof concrete materials, and more specifically relates to a steel slag radiation-proof concrete which uses steel slag as an aggregate and has the function of shielding X-rays, gamma rays and neutron radiation and a preparation method thereof. Background technique [0002] Radiation-proof concrete is also called shielding concrete and heavy concrete, which can effectively shield nuclear radiation. The so-called nuclear radiation generally refers to alpha rays, beta rays, gamma rays and neutron flow. Due to the low penetrating power of α-rays and β-rays, protective materials with a small thickness can completely block them, so the rays to be shielded by radiation-proof concrete are mainly γ-rays and neutron rays. Ordinary anti-radiation concrete aggregates generally use mineral materials such as barite, magnetite, and limonite. However, using these mineral materials as aggregates is easy to segregate, and...

AI Technical Summary

Problems solved by technology

Ordinary anti-radiation concrete aggregates generally use mineral materials such as barite, magnetite, and limonite. However, using these mineral materials as aggregates is easy to segregate, and the concrete construction performance is poor, and the cement hydration heat is large. Easy to crack, poor durability, and poor solidification safety effect of nuclear waste; in addition, these mineral materials are scarce natural resources, and excessive exploitation is not conducive to the sustainable utilization of resources

On the other hand, as my country's steel production increases year by year, the discharge of steel slag also increases. A large amount of steel slag needs to be stacked on a large area every year, which brings serious pollution to the soil, water, and atmosphere. threat to people's health

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