Anti-radiation dry-mixed mortar and preparation method thereof

Abstract

The invention provides an anti-radiation dry-mixed mortar and a preparation method thereof. The anti-radiation dry-mixed mortar comprises, by weight, 25 to 32 parts of cement, 40 to 70 parts of barite sand, 2 to 33 parts of yellow sand, 1.3 to 2.3 parts of ternary hybrid fiber of iron-boron nanometer alloy fiber, glass-reinforced plastic fiber and Durafiber, and 0.5 to 2 parts of an additive. According to the invention, the ternary hybrid fiber of iron-boron nanometer alloy fiber, glass-reinforced plastic fiber and Durafiber used in the invention can effectively restrict generation and development of primary fractures formed in early-stage concrete due to factors like separation, bleeding and contraction, so generation of the primary fractures and the quantity and size of the primary fractures are reduced from a source, compactness of concrete is greatly improved, effective filling of different levels of fractures in a concrete matrix are realized, and the performance of an interface transition layer is further improved. Experiment results show that the anti-radiation dry-mixed mortar prepared in the invention has good radiation protection performance and mechanical properties.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a radiation-proof dry powder mortar and a preparation method thereof. Background technique [0002] With the rapid development of modern science and technology, medical equipment is changing with each passing day, and various high-energy rays are being used more and more widely in the medical field. This brings convenience to people, but also brings some Radiation Hazard. Today, radiation hazards have been recognized as the fourth largest public hazard after air pollution, water pollution, and noise pollution. According to relevant research, electromagnetic radiation is the predisposing factor for miscarriage, infertility, teratosis and other lesions in pregnant women; excessive electromagnetic radiation directly affects children's tissue development, bone development, vision loss, liver hematopoietic function decline, and severe cases can lead to retinal detachment ...

AI Technical Summary

Problems solved by technology

[0003] However, high-density anti-radiation mortar is prone to delamination, segregation and sagging, which are common problems in this type of material. Therefore, people use the method of adding metal fibers to the mortar to improve its mechanical properties.

However, the metal fibers commonly used in the market are not tightly combined with the mortar in the mortar, which leads to the fact that the fiber is easy to separate from the mortar when it exerts the anti-cracking effect, and its mechanical properties have not been exerted as it should be.

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