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Sleeve grouting material for steel bar connection

A sleeve grouting and steel bar technology, which is applied in the field of concrete, can solve the problems of poor compatibility, easy shrinkage of materials, and easy cracks, etc., and achieve the effects of good compatibility, improved self-resistance strength, and stress relief

Active Publication Date: 2018-12-04
上海住信住宅工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the above patent, due to the use of more waste materials, the compatibility of each component is poor, and the material itself is easy to shrink when the grout is solidified, and it is easy to produce cracks. Therefore, a new solution needs to be proposed to solve the above problems

Method used

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  • Sleeve grouting material for steel bar connection
  • Sleeve grouting material for steel bar connection
  • Sleeve grouting material for steel bar connection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the sleeve grouting material for reinforcing bar connection, comprises the component of following parts by weight:

[0039] Portland cement 518 parts;

[0040] 450 parts of quartz sand;

[0041] 0.3 parts of CSA expansion agent;

[0042] 29.5 parts of microbeads;

[0043] 2 parts of polycarboxylate superplasticizer;

[0044] 0.34 part of antifoaming agent, wherein antifoaming agent is emulsified silicone oil, and the particle size of microbead is 320 orders.

Embodiment 2

[0045] Embodiment 2: the sleeve grouting material for reinforcing bar connection, comprises the component of following parts by weight:

[0046] Portland cement 510 parts;

[0047] 440 parts of quartz sand;

[0048] 0.2 parts of CSA expansion agent;

[0049] 26 copies of microbeads;

[0050] 1.8 parts of polycarboxylate superplasticizer;

[0051] 0.38 part of antifoaming agent, wherein antifoaming agent is emulsified silicone oil, and the particle size of microbead is 325 orders.

Embodiment 3

[0052] Embodiment 3: the sleeve grouting material for steel bar connection, comprising the following components in parts by weight:

[0053] Portland cement 525 parts;

[0054] 460 parts of quartz sand;

[0055] 0.4 parts of CSA expansion agent;

[0056] 28 copies of microbeads;

[0057] 2.3 parts of polycarboxylate superplasticizer;

[0058] 0.32 part of antifoaming agent, wherein antifoaming agent is emulsified silicone oil, and the particle size of microbead is 300 orders.

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Abstract

The invention discloses a sleeve grouting material for steel bar connection, relates to the technical field of concrete, and solves the technical problem that a conventional grouting material generates cracks easily. The grouting material comprises following components in parts by weight: 500 to 530 parts of silicate cement, 430 to 470 parts of quartz sand, 0.1 to 0.5 part of CSA expanding agent,25 to 30 parts of beads, 1.5 to 2.5 parts of polycarboxylic acid water reducer, and 0.3 to 0.4 part of antifoaming agent. The beads and polycarboxylic acid water reducer are used to improve the flowing performance and tensile strength of the grouting material, the expanding agent can generate uniform and compact pores, the shrinkage stress of the grouting material is eliminated, and the crack generation is avoided therefore.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to a sleeve grouting material for connecting steel bars. Background technique [0002] The grouting material is made of high-strength materials as aggregate, cement as binder, supplemented by high fluidity, micro-expansion, anti-segregation and other substances. It adds a certain amount of water at the construction site, and it can be used after stirring evenly. The grouting material has the characteristics of good self-flowing property, rapid hardening, early strength, high strength, no shrinkage, and slight expansion; non-toxic, harmless, non-aging, no pollution to water quality and surrounding environment, good self-tightness, and anti-rust. In terms of construction, it has the advantages of reliable quality, reduced cost, shortened construction period and convenient use. Fundamentally change the force of the equipment base, so that it can evenly bear all the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B111/70
CPCC04B28/04C04B2111/1062C04B2111/70C04B2201/50C04B14/06C04B2103/0068C04B14/22C04B2103/302C04B2103/50C04B22/16C04B24/06
Inventor 孙飞刘嘉汪廷秀胡欢
Owner 上海住信住宅工业有限公司
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