Cement-based composite material and application thereof

Abstract

The invention provides a cement-based composite material. A dry basis of the cement-based composite material comprises the following components in parts by mass: 40-45 parts of magnesium oxide, 25-30parts of monopotassium phosphate, 10-16 parts of fly ash, 4-10 parts of borax and 0.4-4 parts of coconut fibers. A building component formed by pouring the cement-based composite material provided bythe invention has the compressive strength of 42-54MPa and the breaking strength of 12-20MPa, has the characteristics of quick setting, high strength and high toughness, and is suitable for quick repair of roads and airfield runways with large traffic flow, such as high speed and municipal administration; production of building materials combined with industrial waste, manufacturing of artificialboards serving as novel binders, solidification treatment of frozen earth areas and deep oil wells and the like are well applied. Based on the good toughness, energy absorption performance and stressperformance of the renewable plant fiber cement-based composite material, the renewable plant fiber cement-based composite material can be gradually added into an engineering load-bearing members.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a cement-based composite material and its application. Background technique [0002] With the development of our country's society and economy, the research and application of new materials is growing rapidly. Among them, the new gel material magnesium phosphate cement is an important research hotspot, and its setting time is short, the early strength is high, and the mechanical properties are excellent. It is gradually widely used in the rapid repair of high-speed, municipal and other roads with heavy traffic and airport runways, the production of building materials combined with industrial waste, the manufacture of artificial boards as new binders, and the solidification of permafrost areas and deep oil wells. These important aspects, but the current magnesium phosphate cement has the defect of poor toughness, which greatly limits its application range. Studies have...

AI Technical Summary

Problems solved by technology

[0002] With the development of our country's society and economy, the research and application of new materials are increasing rapidly. Among them, the new gel material magnesium phosphate cement is an important research hotspot, which has the characteristics of short setting time, high early strength and excellent mechanical properties. It is gradually widely used in the rapid repair of high-speed, municipal and other roads with heavy traffic and airport runways, the production of building materials combined with industrial waste, the manufacture of artificial boards as new binders, and the solidification of permafrost areas and deep oil wells. These important aspects, but the current magnesium phosphate cement has the defect of poor toughness, which greatly limits its application range

Studies have shown that compared with other natural fibers, coconut fiber has higher toughness. Therefore, it is of great significance to develop a new type of building material, green cement-based composite material with fast setting, high strength and high toughness. Currently, there is no such material on the market A green cement-based composite material with all these properties at the same time

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