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Polymer cement-based self-leveling grouting material

A grouting material and cement-based technology, applied in the field of grouting materials, can solve the problems of affecting load, slow strength growth, poor durability, etc., and achieve the effect of large adjustment range, low price and good operability

Inactive Publication Date: 2012-11-07
南京京能恒基新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chemical grouting materials have high production costs, poor bonding with steel structures and concrete, and poor durability
The strength of traditional cement-based grouting materials grows slowly, and shrinks when dried, and the strength decreases in the later period of use. Especially at low temperature, the grouting materials will shrink to a certain extent before and after hardening. Among them, the settlement shrinkage has the greatest impact, which may easily lead to incomplete filling. As a result, the transmission of the load is affected, and the installation accuracy and service life of the equipment are greatly affected.
In addition, under negative temperature conditions, traditional cement-based grouting materials cannot be constructed, which affects the construction period

Method used

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  • Polymer cement-based self-leveling grouting material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A preparation method of a polymer cement-based self-leveling grouting material is as follows:

[0012] Step 1: take each raw material by weight percentage;

[0013] PO52.5 cement 35.6%, 52.5 low alkalinity sulfoaluminate cement 1.1%, quartz sand 48.56%, heavy calcium 12.9%, Wacker 5044N rubber powder 0.73%, polycarboxylate superplasticizer 0.37%, calcium formate early strength Agent 0.37%, methyl cellulose ether 0.012%, polysiloxane defoamer 0.32%;

[0014] Step 2: Put the weighed raw materials in a forced mixer and mix evenly, then pack them into bags, and transport them to the construction site after passing the inspection. It can be used by adding 14.5% (mass percentage) of tap water during use.

Embodiment 2

[0016] A preparation method of a polymer cement-based self-leveling grouting material is as follows:

[0017] Step 1: take each raw material by weight percentage;

[0018] PO52.5 cement 33.9%, 52.5 low alkalinity sulfoaluminate cement 2.2%, quartz sand 47.79%, heavy calcium 14.3%, Wacker 5011L rubber powder 0.73%, naphthalenesulfonate formaldehyde condensation product water reducer 0.36%, Calcium chloride early strength agent 0.36%, hydroxyethyl cellulose ether 0.010%, polysiloxane defoamer 0.31%;

[0019] Step 2: Put the weighed raw materials in a forced mixer and mix evenly, then pack them into bags, and transport them to the construction site after passing the inspection. It can be used by adding 15% (mass percentage) of tap water when used.

Embodiment 3

[0021] A preparation method of a polymer cement-based self-leveling grouting material is as follows:

[0022] Step 1: take each raw material by weight percentage;

[0023] PO52.5 cement 33.8%, 52.5 low alkalinity sulfoaluminate cement 3.0%, quartz sand 48.56%, heavy calcium 12.9%, Wacker 7055N rubber powder 0.73%, sulfonated melamine formaldehyde resin water reducer 0.38%, calcium formate Early strength agent 0.38%, methyl cellulose ether 0.012%, emulsified silicone oil defoamer 0.32%;

[0024] Step 2: Put the weighed raw materials in a forced mixer and mix evenly, then pack them into bags, and transport them to the construction site after passing the inspection. It can be used by adding 14.5% (mass percentage) of tap water during use.

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Abstract

The invention discloses a polymer cement-based self-leveling grouting material which comprises the following components according to mass percent: 32-36 percent of PO52.5 cement, 1-5 percent of 52.5 low-alkalinity sulphoaluminate cement, 47-50 percent of quartz sand, 11-15 percent of triple superphosphate and 1.77-1.852 of percent additive. The preparation method comprises the steps as follows: placing the materials in a mixer as the mass percent and uniformly mixing; bagging the materials; and conveying to construction sites after passing a test. According to the invention, the characteristics of self leveling, early strength and shrinkage prevention are achieved. The material is mainly used for the installation of large-sized high-precision equipment and larger-area self leveling, as well as emergency repair engineering, underground engineering, tunnel engineering, anchorage engineering, water interception and leak blockage, reinforcement engineering and the like.

Description

technical field [0001] The invention relates to a grouting material in construction engineering, in particular to a polymer cement-based self-leveling grouting material, which is mainly used for large-scale high-precision equipment installation, large-area automatic leveling and emergency repair projects, underground projects, tunnel projects, anchoring Engineering, water interception and plugging, reinforcement engineering, etc. Background technique [0002] At present, the commonly used grouting materials mainly include chemical grouting materials and traditional cement-based grouting materials. However, chemical grouting materials have high production costs, poor bonding force with steel structures and concrete, and poor durability. The strength of traditional cement-based grouting materials grows slowly, and shrinks when dried, and the strength decreases in the later period of use. Especially at low temperature, the grouting materials will shrink to a certain extent bef...

Claims

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Application Information

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IPC IPC(8): C04B28/06
Inventor 李东旭李伟张超张毅郭鸿霖
Owner 南京京能恒基新材料有限公司
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