Nuclear power plant containment concrete

Abstract

The invention relates to nuclear power plant containment concrete. The concrete consists of the following components in parts by mass: 130-200 parts of cement with strength of 52.5 or 42.5, 60-120 parts of slag, 50-100 parts of metakaolin, 50-150 parts of boron glass sand, 600-800 parts of nickel slag, 600-800 parts of barite, 200-400 parts of limonite, 100-300 parts of ceramsite, 20-50 parts of lead fibers, 130-160 parts of water, 4-6 parts of a water reducing agent and 4-6 parts of an early strength agent. After 28 days of curing of the concrete, the inner surface of the concrete is coated with a layer of anti-radiation coating. The nuclear power plant containment concrete provided by the invention has a good anti-radiation property, can well shield alpha, beta and gamma rays and neutronrays, and has good crack resistance, high-temperature resistance and durability, and simultaneously solid wastes such as nickel slag, glass powder and the like are utilized, so that the problems of resource waste and environmental pollution are solved to a certain extent.

Description

technical field [0001] The invention relates to the field of nuclear power plant safety protection, in particular to a nuclear power plant containment concrete. Background technique [0002] The containment shell is the nuclear reactor containment shell, which is the outermost building of the pressurized water reactor. The main function of the containment shell structure of the nuclear power plant is to completely shield the radioactive material leaked from the reactor pressure vessel in the shell when the reactor is operating abnormally or even out of control. The last barrier of nuclear power safety, so the containment must have extremely high structural safety and durability while taking into account radiation protection capabilities. At present, the containment of nuclear power plants is mainly made of steel containment, but the cost is high, the fire performance is poor, and it is not resistant to acid and alkali corrosion. When damage occurs, brittle fracture is the ma...

AI Technical Summary

Problems solved by technology

[0009] Technical problem: The technical problem to be solved by the present invention is to provide a nuclear power plant containment concrete. This invention firstly solves the weaknesses of ordinary containment concrete, such as excessive bulk density, low impact resistance and high temperature resistance, and secondly solves the problem of nickel slag and other solids. The problem of waste resources occupying land and polluting the environment

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