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Ultra-high performance cement-based grouting material for micro-expansion type assembly building and preparation method thereof

An ultra-high-performance, assembled technology, applied in the field of grouting materials and their preparation, and cement-based grouting materials, can solve problems such as insufficient fluidity, affecting product engineering quality, poor crack resistance, etc., achieve excellent fluidity, shorten construction period, increase The effect of crack resistance

Inactive Publication Date: 2019-01-04
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The cement-based grouting materials currently used have problems such as insufficient fluidity, poor crack resistance, and shrinkage of the material, which affects the engineering quality of the product.

Method used

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  • Ultra-high performance cement-based grouting material for micro-expansion type assembly building and preparation method thereof
  • Ultra-high performance cement-based grouting material for micro-expansion type assembly building and preparation method thereof
  • Ultra-high performance cement-based grouting material for micro-expansion type assembly building and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] A kind of preparation method for the grouting material of prefabricated building, it is characterized in that, comprises the following steps:

[0029] (a) Pour the powder material and fibers of the grouting material into the mixer in turn, so that the dry materials are evenly mixed;

[0030] (b) Weigh an appropriate amount of water in proportion and add it to the mixer, mix evenly to obtain an ultra-high-performance grouting material, and then inject the ultra-high-performance grouting material into the grouting pump to prepare for the grouting operation.

[0031] The composition and weight percentage contained in the specific implementation case are shown in Table 1 below:

[0032] Table 1 Composition and percentage of grout for prefabricated buildings

[0033]

[0034] In this way, an ultra-high-performance cement-based grouting material is obtained, and the slurry does not segregate and does not bleed; it has good fluidity and can be self-leveling. The specific ...

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Abstract

The invention discloses a cement-based grouting material for assembly building. The grouting material is prepared from cement, slag micro powder, silica fume, sand, expanding agent, defoaming agent, high-efficiency water reducing agent, water and fiber. The prepared ultra-high performance grouting material has good grain gradation due to the adoption of the active mineral admixture, the mechanicalproperty is excellent and the fluidity is good, and the requirements on the compression strength and the fluidity of the grouting material for the sleeve connection are met, due to the excellent fluidity of the prepared grouting material, the material is self-compacting and has excellent mechanical property, durability, crack resistance and construction performance.

Description

technical field [0001] The invention relates to a grouting material and a preparation method thereof, in particular to a cement-based grouting material used for steel bar sleeves, and relates to the field of prefabricated buildings. Background technique [0002] The prefabricated building method can greatly reduce the wet work on the construction site through factory prefabrication, which is not only environmentally friendly but also can reduce the waste of on-site materials to a certain extent. The horizontal connection of the prefabricated building is realized by the reserved horizontal reinforcement of the components. The longitudinal connection inserts the ribbed steel bar into the sleeve embedded in the concrete, and fills the gap between the sleeve and the steel bar with high-performance grouting material. The convex ribs are tightly engaged to realize the connection of the upper and lower steel bars. In prefabricated prefabricated building structures, high-performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2111/70C04B2201/50C04B18/141C04B18/146C04B14/06C04B2103/12C04B2103/0068C04B2103/302C04B2103/50C04B14/48C04B14/42
Inventor 赖建中李宏基郑晓博
Owner NANJING UNIV OF SCI & TECH
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