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Underwater-non-dispersing non-shrinking grouting material

A non-shrinkage, grouting material technology, applied in the field of new materials, can solve the problems of unsatisfactory durability and poor stability, and achieve the effects of excellent strength, improved anti-dispersion performance, good fluidity and groutability

Inactive Publication Date: 2017-10-27
XUZHOU ZHONGLIAN CONCRETE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have problems such as poor stability and unsatisfactory durability.

Method used

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  • Underwater-non-dispersing non-shrinking grouting material

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Experimental program
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Effect test

Embodiment 1~4

[0027] Embodiments 1-4: An underwater non-dispersing and non-shrinking grouting material.

[0028] An underwater non-dispersing and non-shrinking grouting material, the raw material formula of the slurry is composed of the following materials in mass percentage.

[0029]

[0030] A preferred embodiment is: the Portland cement is Huaihai Zhonglian P.O.42.5 cement, and the 28d strength is 49.9MPa.

[0031] A preferred embodiment is: the aluminate cement is Zhengzhou Yuxiang CA-50.

[0032] A preferred embodiment is: the gypsum used is desulfurized gypsum from Xuzhou Guohua Power Plant.

[0033] A preferred embodiment is: the calcination temperature of the high-activity magnesium oxide expansion agent is 700°C, and the specific surface area is 400m 2 / Kg.

[0034] A preferred embodiment is: the calcination temperature of the medium active magnesium oxide expansion agent is 900°C, and the specific surface area is 450 m 2 / Kg.

[0035] A preferred embodiment is: the trietha...

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Abstract

Disclosed is an underwater-non-dispersing non-shrinking grouting material. The raw material formula of the grouting material is as follows: 60-65% of Portland cement, 5-8% of aluminate cement, 5-7% of desulphurization gypsum, 2-3% of a high-activity magnesia expansive agent, 2-3% of a medium-activity magnesia expansive agent, 0.1-0.3% of a polycarboxylic acid water reducing agent, 0.02-0.05% of triethanolamine, 1-2% of alum, 0.05-0.08% of polyacrylamide, 0.05-0.08% of an ethylene oxide-propylene oxide copolymer and the balance of water. The grouting material provided by the invention has a good flow ability and groutability, and is not dispersed or segregated during direct grouting construction underwater. The hardened grout body has good strength both in the early and later period. The grout body has comparatively high volume stability and does not shrink, and the durability is improved obviously.

Description

technical field [0001] The invention relates to an underwater non-dispersing and non-shrinking grouting material, which belongs to the technical field of new materials. Background technique [0002] Non-shrinkage grouting material is a kind of grouting repair material based on cement-based cementitious material, mixed with superplasticizer and other additives and fine aggregates. It has large fluidity, early strength, high strength, and micro-expansion. performance. It is often used for shrinkage compensation, early strength, high-strength grouting, and repairing to form a high-strength, dense, and impermeable hardened body. It can be used to fill holes, act as a support between the base and the floor, such as beam-column joints, bridge supports, equipment supports, crane tracks, etc., and can also be used to fix bolts, steel bar laps, supports, etc. [0003] For grouting materials, the problems of early strength and expansion, as well as the contradiction between large fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B22/14C04B22/06C04B111/74
Inventor 臧军祖庆贺拾莉
Owner XUZHOU ZHONGLIAN CONCRETE CO LTD
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