Radiation-resistant concrete based on environment protection type functional aggregates and preparation method thereof

Abstract

The invention relates to radiation-resistant concrete based on environment protection type functional aggregates and a preparation method thereof. The radiation-resistant concrete based on environment protection type functional aggregates is characterized in that the radiation-resistant concrete consists of water, gel materials, fine aggregates, coarse aggregates, water reducing agents and fiber,wherein the gel materials consist of cement and mineral admixture, and the fiber consists of steel fiber and lead boron polyethylene fiber, wherein each ingredient has the following mixture ratio: 140 to 160 kg / m<3> of water, 200 to 400 kg / m<3> of cement, 100 to 200 kg / m<3> of mineral admixture, 1000 to 2000 kg / m<3> of fine aggregates and 1500 to 2500 kg / m<3> of coarse aggregates. The mass dopingamount of the water reducing agents accounts for 0.6 to 1.0 percent of the total mass of the gel materials, the volume doping amount of the steel fiber accounts for 0.5 to 1.5 percent of the total volume of the gel materials, and the volume doping amount of the lead boron polyethylene fiber accounts for 0.8 to 1.2 percent of the total volume of the gel materials. The invention has the advantages of environment-friendly effect and low cost. The obtained radiation-resistant concrete has good ray shielding effect, good work performance, good crack resistance performance and good durability performance.

Description

technical field [0001] The invention belongs to the field of radiation shielding building materials, and in particular relates to radiation-proof concrete based on environment-friendly functional aggregates and a preparation method thereof. Background technique [0002] With the increasing maturity of nuclear technology and the rapid development of various nuclear-related industries such as nuclear power, military, medical, scientific research, etc., the radiation dose of rays in the environment is increasing day by day. These rays can induce cancer, leukemia and multiple myeloid cancer, large breast cancer, thyroid dysfunction, infertility, miscarriage and birth defects, etc., and induce genetic mutations in plants, endangering the growth of crops, and It has a long incubation period and cannot be known in a short period of time. Therefore, the research on the preparation of a protective body with excellent protective performance is particularly meaningful. A nuclear prote...

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Problems solved by technology

These methods do not use high-density anti-radiation aggregates, but increase the thickness of concrete to achieve the purpose of shielding radiation, but no matter from the perspective of engineering practice or economic considerations, they cannot meet the requirements, and their ability to prevent neutron radiation is relatively low. Poor, in the new generation nuclear reactor system with high power, large neutron flux, strong radiation, and long life design requirements, this kind of concrete is bound to fail to meet the design requirements

[0004] With the rapid development of nuclear power, military, environment, medical care, etc., the national nuclear industry's demand for building materials with radiation protection has also greatly increased. At the same time, some natural ores with excellent radiation resistance are used as non-renewable resources. It is impossible to meet the needs of engineering construction, so a kind of aggregate prepared by using urban silt, sludge and some industrial waste to replace natural ore to prepare concrete with good radiation resistance, work performance, crack resistance and durability method is of great significance

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