Super early strong cement base underwater non-dispersible repairing material and preparation method

An early-strength cement and repair material technology, applied in the field of underwater rapid repair and reinforcement, can solve the problems of loss of cement slurry, difficulty in achieving the effect of large fluidity and micro-expansion of grouting materials, affecting the quality of grouting, etc. The effect of reducing water pollution and simple construction and operation

Inactive Publication Date: 2019-08-30
安徽瑞和新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when ordinary cement-based grouting materials are directly applied to underwater grouting, the grout will be lost due to water erosion, which will seriously affect the

Method used

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  • Super early strong cement base underwater non-dispersible repairing material and preparation method
  • Super early strong cement base underwater non-dispersible repairing material and preparation method
  • Super early strong cement base underwater non-dispersible repairing material and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A super-early-strength cement-based underwater non-dispersant repair material, comprising the following raw materials by mass: 290 parts of P·O5 2.5 cement, 520 parts of 42.5 grade sulphoaluminate cement, 48 parts of lithium slag powder, and 14 parts of silicon powder 45 parts of hollow microspheres, 2.8 parts of non-ionic polyacrylamide (molecular weight 6 million), 0.8 parts of xanthan gum, 0.2 parts of glucomannan, 12 parts of calcium formate, 3.0 parts of potassium sodium tartrate, 24 parts of UEA expansion agent parts, 24 parts of calcium oxide expansion agent, 12 parts of magnesium oxide expansion agent, 4.0 parts of polycarboxylate water reducer, and 0.2 part of polyether type defoamer.

Embodiment 2

[0030] A super-early-strength cement-based underwater non-dispersant repair material, comprising the following raw materials by mass: 260 parts of P·O4 2.5 cement, 540 parts of 52.5 grade sulphoaluminate cement, 45 parts of lithium slag powder, and 22 parts of silicon powder 50 parts of hollow microspheres, 3.0 parts of non-ionic polyacrylamide (molecular weight 4 million), 0.8 parts of xanthan gum, 0.3 parts of glucomannan, 12 parts of calcium thiocyanate, 3.0 parts of sodium gluconate, UEA expansion 28 parts of calcium oxide expansion agent, 20 parts of calcium oxide expansion agent, 12 parts of magnesium oxide expansion agent, 3.7 parts of polycarboxylate superplasticizer, and 0.2 parts of polyether type defoamer.

Embodiment 3

[0032] A super-early-strength cement-based underwater non-dispersant repair material, comprising the following raw materials by mass: 320 parts of P·O5 2.5 cement, 500 parts of 42.5 grade sulphoaluminate cement, 42 parts of lithium slag powder, and 18 parts of silicon powder 38 parts of hollow microspheres, 2.8 parts of non-ionic polyacrylamide (molecular weight 6 million), 0.8 parts of xanthan gum, 0.2 parts of glucomannan, 14 parts of calcium formate, 3.0 parts of boric acid, 24 parts of UEA expansion agent, 21 parts of calcium oxide expansion agent, 12 parts of magnesium oxide expansion agent, 4.0 parts of polycarboxylate water reducer, 0.2 part of silicone defoamer.

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Abstract

The invention provides a super early strong cement base underwater non-dispersible repairing material. The material is prepared from the following components in percentage by weight: 25.0%-35.0% of portland cement, 50.0%-60.0% of sulphoaluminate cement, 3.0%-6.0% of lithium slag powder, 1.0%-3.0% of ganister sand, 3.0%-6.0% of hollow microbeads, 0.20%-0.50% of a compound flocculant, 0.5%-1.5% of an early strong agent, 0.20%-0.50% of a retarding agent, 4.0%-8.0% of a volume stabilizing agent, 0.30%-0.80% of a polycarboxylate based superplasticizer and 0.01%-0.03% of a deformer. The super earlystrong cement base underwater non-dispersible repairing material provided by the invention has the characteristics of rapid hardening, early strong performance, high underwater anti-dispersing performance, good bonding, super large flowability, stable volume, simple construction methods, and no toxicity, and is especially suitable for urgent underwater projects such as damp and poor-quality sections, large flow areas and areas waiting to be urgent operation.

Description

technical field [0001] The invention relates to the field of rapid underwater repair and reinforcement, in particular to a super-early-strength cement-based underwater non-dispersible repair material. Background technique [0002] Due to the adoption of some new construction techniques, many bridges and water conservancy projects currently under construction in our country need to carry out underwater grouting sealing and water-stop construction under the conditions of high water head, long flow, and small pipe diameter. Concrete cracks need to be repaired or reinforced. Traditional construction methods such as cofferdam drainage method and conduit method cannot be used or the cost is high. A new type of material suitable for direct underwater grouting is needed. [0003] The underwater non-dispersible concrete is to add the underwater non-dispersible agent mainly flocculant to the fresh concrete, so that it can form ionic or covalent bonds with the surface of cement particl...

Claims

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Application Information

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IPC IPC(8): C04B28/06C04B111/72C04B111/74
CPCC04B28/06C04B2111/72C04B2111/74C04B2201/50C04B7/02C04B18/141C04B18/146C04B14/02C04B2103/302C04B24/2652C04B24/38C04B2103/14C04B2103/50C04B22/064C04B22/066
Inventor 陈国新王冬祝烨然唐修生徐志峰
Owner 安徽瑞和新材料有限公司
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