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Assembly type shrinkage-free sleeve grouting material and preparation method thereof

A sleeve grouting, non-shrinking technology, applied in the field of building materials, can solve the problems of large drop, poor fluidity, poor strength, etc., and achieve the effect of dense surface, good fluidity and high early strength

Inactive Publication Date: 2020-04-03
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above technical deficiencies, to propose a non-shrinkable sleeve grout for assembly and its preparation method, to solve the poor fluidity of the existing sleeve grout in the prior art, the large drop after 30 minutes and the early strength of the product poor technical problem

Method used

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  • Assembly type shrinkage-free sleeve grouting material and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a non-shrinkable sleeve grout for assembly, which is obtained through the following steps:

[0031] Add 49 parts of cement, 1 part of activated silica powder, 3.5 parts of expansion agent, 1 part of organic bentonite, 1 part of resin rubber powder, 0.3 part of water reducer, 0.1 part of defoamer and 0.1 part of retarder into the mixer and stir for 5 minutes. Then add 34 parts of 20-40 mesh quartz powder and stir for 5 minutes, then add 10 parts of 40-60 mesh quartz powder and stir for 5 minutes to obtain the above non-shrinkable sleeve grout for assembly.

Embodiment 2

[0033] This embodiment provides a non-shrinkable sleeve grout for assembly, which is obtained through the following steps:

[0034] Add 46 parts of cement, 1.5 parts of activated silica powder, 3.4 parts of expansion agent, 1.5 parts of organic bentonite, 2 parts of resin rubber powder, 0.3 parts of water reducer, 0.15 parts of defoamer and 0.15 parts of retarder into the mixer and stir for 5 minutes. Then add 35 parts of 20-40 mesh quartz powder and stir for 5 minutes, then add 10 parts of 40-60 mesh quartz powder and stir for 5 minutes to obtain the above non-shrinkable sleeve grout for assembly.

Embodiment 3

[0036] This embodiment provides a non-shrinkable sleeve grout for assembly, which is obtained through the following steps:

[0037] Add 49 parts of cement, 2 parts of activated silica powder, 4 parts of expansion agent, 1 part of organic bentonite, 1 part of resin rubber powder, 0.4 part of water reducer, 0.1 part of defoamer, and 0.1 part of retarder into the mixer and stir for 10 minutes. Then add 30 parts of 20-40 mesh quartz powder and stir for 5 minutes, then add 12.4 parts of 40-60 mesh quartz powder and stir for 5 minutes to obtain the above non-shrinkable sleeve grout for assembly.

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Abstract

The invention discloses an assembly type shrinkage-free sleeve grouting material and a preparation method thereof. The assembly type shrinkage-free sleeve grouting material is prepared from the following raw materials in parts by weight: 35-50 parts of cement, 30-45 parts of quartz powder, 0.5-2 parts of activated silicon powder, 2-5 parts of an expanding agent, 1-4 parts of organic bentonite, 0.5-2 parts of resin rubber powder, 0.3-1 part of a water reducing agent, 0.1-0.5 part of a defoaming agent and 0.1-0.3 part of a retarder. The assembly type shrinkage-free sleeve grouting material provided by the invention has the advantages of good fluidity, compact surface, no bubbles, no shrinkage in the later period, no bleeding, no corrosion to reinforcing steel bars, stable and reliable grouting material performance and high early strength of a product.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a non-shrinkable sleeve grout for assembly and a preparation method thereof. Background technique [0002] At present, steel sleeve connectors are commonly used for joint connection of prefabricated components in prefabricated buildings, and grouting materials are mainly used as adhesives in the steel sleeve connection process. Therefore, the quality of the sleeve grouting material is related to the structural reliability and stability of the prefabricated component joints, and also affects the safety of the building structure. However, the quality of common sleeve grouting materials in the market is uneven, and there are still problems such as poor fluidity, low early expansion, and poor environmental adaptability. Some mineral fillers, such as silica fume, are added in some disclosed sleeve grout patents. However, the specific surface area of ​​silicon powder is re...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B20/02C04B111/70
CPCC04B20/023C04B28/02C04B2111/70C04B14/04C04B14/06C04B2103/0068C04B14/104C04B16/04C04B2103/302C04B2103/22C04B2103/50
Inventor 火会燎杨莉孟学锋
Owner CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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