Cement-based composite material and application thereof

A composite material and cement-based technology, which is applied in roads, pavement details, buildings, etc., can solve the problems of limited application range and poor toughness, and achieve the effect of simple and easy preparation method, excellent mechanical performance and good toughness

Inactive Publication Date: 2020-05-19
GUANGZHOU UNIVERSITY
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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 so

Method used

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  • Cement-based composite material and application thereof
  • Cement-based composite material and application thereof

Examples

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[0030] Example: A cement-based composite material. The raw materials and mass percentages of the specific examples are shown in Table 1:

[0031] Table 1 The raw material composition and mass percentage (%) of Examples 1-3

[0032] Magnesium Oxide Potassium Dihydrogen Phosphate Fly ash Borax Coconut fiber water Example 142.5128.9210.714.251.2712.34 Example 242.5128.9210.714.680.8512.33 Example 341.9828.5610.585.041.6812.16

[0033] A method for preparing building components includes the following steps:

[0034] (1) Weigh the raw materials according to the composition in Table 1;

[0035] (2) Mix potassium dihydrogen phosphate, borax, and fly ash, dry mix for 1 minute to form a uniform dry material mixture;

[0036] (3) Add water and stir for 3 minutes to form a uniform slurry;

[0037] (4) Add magnesia, stir at low speed for 30 seconds, then stir at high speed for 90 seconds, then evenly disperse coconut fiber, and form cement-based composite slurry with good fluidity after stirri...

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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...

Claims

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Application Information

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IPC IPC(8): C04B28/10E01C11/00
CPCC04B28/10C04B2111/00017C04B2201/50E01C11/005C04B22/16C04B18/08C04B22/08C04B18/248
Inventor 张力文耿涛谢柱坚黄毅平邹志伟刘周强章敏江祖慊吴辉黄蕾李晶赖煜山郑威乐施宗直黄凯岚
Owner GUANGZHOU UNIVERSITY
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