Iron ore anti-radiation concrete and preparation method thereof

Abstract

The invention provides iron ore anti-radiation concrete and a preparation method thereof, and the iron ore anti-radiation concrete is prepared from the following components in parts by weight: 1400 to 1800 parts of iron ore coarse aggregate, 1000 to 1400 parts of iron ore fine aggregate, 240 to 400 parts of high-boron glass powder, 260 to 350 parts of cement, 60 to 100 parts of fly ash, 40 to 70 parts of steel slag micro powder, 160 to 200 parts of water, 5.0 to 8.0 parts of water reducing agent and 6.0 to 9.0 parts of fiber. The particle size of the high-boron glass powder is smaller than 150 microns, the content of silicon dioxide is 36-39%, the content of boric oxide is 29-30%, the apparent density is 2158 kg / m < 3 >, the apparent density of the iron ore radiation protection concrete is not lower than 3350 kg / m < 3 >, the strength is not lower than 45 MPa, and the content of boron is not lower than 0.8% of the mass of dried concrete. The iron ore anti-radiation concrete can effectively shield various radiations such as X rays, gamma rays and neutron rays, has good working performance and mechanical performance, is convenient to transport and construct, and can be applied to large-size anti-radiation engineering construction on a large scale.

Description

technical field [0001] The invention relates to the technical field of nuclear power engineering, in particular to an iron ore radiation-proof concrete and a preparation method thereof. Background technique [0002] Concrete is currently the most widely used and economical radiation protection material, and its shielding effect mainly depends on its apparent density and the content of light elements such as hydrogen, boron, and lithium. Iron ore has a high bulk density and is often used as an aggregate for radiation-proof concrete, which can effectively shield X and γ rays, but has poor neutron ray resistance, is easy to segregate, and has poor concrete construction performance. In addition, in large-volume radiation protection projects, the cement hydration exotherm is large, easy to crack, and has poor durability, resulting in a significant reduction in the radiation shielding effect. SUMMARY OF THE INVENTION [0003] In view of the shortcomings of the above-mentioned p...

AI Technical Summary

Problems solved by technology

Iron ore has a high bulk density, and is often used as aggregate in radiation-proof concrete, which can effectively shield X and gamma rays, but has poor anti-neutron radiation ability, is easy to segregate, and has poor concrete construction performance

In addition, in large-volume radiation protection projects, the hydration heat of cement is large, it is easy to crack, and its durability is poor, which leads to a significant reduction in radiation shielding effect

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