High-fluidity ultrahigh-strength cement-based grouting material and preparation method thereof

An ultra-high-strength, high-fluidity technology, applied in the field of building materials, can solve problems such as failure to meet environmental protection requirements, large environmental pollution, and single performance, and achieve the effects of reliable quality, long service life, and low cost

Pending Publication Date: 2021-08-24
华新超可隆新型建材科技(黄石)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, the related research results of new cement component materials and mixtures that can meet the requirements of different special parts are relatively abundant, but there are also the following problems: the research results only focus on one or several aspects, and the performance is relatively single; Although there are many studies on ultra-high-strength cement-based premixes, there are still defects, such as large shrinkage; the ultra-high-performance grouting materials commonly used in the market are often organic premixes, which are expensive and pollute the environment. , can not meet the requirements of environmental protection

Method used

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  • High-fluidity ultrahigh-strength cement-based grouting material and preparation method thereof
  • High-fluidity ultrahigh-strength cement-based grouting material and preparation method thereof

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preparation example Construction

[0043] The preparation method of the above-mentioned high-fluidity ultra-high-strength cement-based grouting material comprises the following steps:

[0044] Mixing steps: Wet the barrel of the mixer, then add the formula amount of cement, quartz sand, coagulant and expansion agent, and stir for 2-3 minutes to obtain the mixture;

[0045] Steps for preparing the finished product: Add the formulated amount of water reducer and water into the mixture, and continue to stir for 2-3 minutes to obtain a highly fluid, ultra-high-strength cement-based grouting material.

Embodiment 1

[0047] A high-fluidity, ultra-high-strength cement-based grouting material, comprising the following components in parts by weight:

[0048] 10 parts of water, 50 parts of cementitious material, 60 parts of quartz sand, 5 parts of water reducer, 3 parts of coagulant and 0.1 part of expansion agent.

[0049] Among them, the cement includes the following components: P·I52.5 ordinary Portland cement, sulphoaluminate cement, silica fume, fine mineral powder, superfine fly ash, gypsum and quartz powder. The apparent density of quartz sand is 2500kg / m 3 , The particle size of quartz sand is 70 mesh. The water reducer is a polycarboxylate water reducer.

[0050] The expansion agent is plastic expansion agent, calcium sulfoaluminate expansion agent and calcium oxide expansion agent, and the 3h limit expansion rate of the expansion agent is 0.1%.

[0051] The preparation method of the above-mentioned high-fluidity ultra-high-strength cement-based grouting material comprises the foll...

Embodiment 2

[0055] A high-fluidity, ultra-high-strength cement-based grouting material, comprising the following components in parts by weight:

[0056] 30 parts of water, 150 parts of cementitious material, 100 parts of quartz sand, 1 part of water reducer, 0.1 part of coagulant and 0.01 part of expansion agent.

[0057] Among them, the cementitious material components are P·I 52.5 ordinary Portland cement, sulphoaluminate cement, silica fume, ultrafine mineral powder, ultrafine fly ash, gypsum and quartz powder, and the percentage examples are: P· I 52.5 Ordinary Portland cement: Sulphoaluminate cement: Silica fume: Ultrafine mineral powder: Ultrafine fly ash: Gypsum: Quartz powder = 50~55:5:10~15:10~12:5:10 :5.

[0058] As a further embodiment, the apparent density of quartz sand is 2500kg / m 3 -2700kg / m 3 , the particle size of the quartz sand is 20-100 mesh. The particle size distribution is: 20-40 mesh: 40-70 mesh: 70-110 mesh = 2:5:3.

[0059] The expansion agent is a plastic e...

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Abstract

The invention discloses a high-fluidity ultrahigh-strength cement-based grouting material comprising the following ingredients in parts by weight: 10 to 30 parts of water, 50 to 150 parts of cementing materials, 60 to 100 parts of quartz sand, 1 to 5 parts of a water reducing agent, 0.1 to 3 parts of a coagulation accelerator and 0.01 to 0.1 part of an expanding agent. The cement-based grouting material has the characteristics of low viscosity, high fluidity, early strength, ultrahigh strength, high toughness, ultrahigh durability, micro-expansion, high compactness, shrinkage resistance and the like, is low in cost, and can meet the requirement of environmental protection. The chloride ion migration and diffusion coefficient of the high-flowability ultrahigh-strength cement-based grouting material is less than 10<-13>, and the high-flowability ultrahigh-strength cement-based grouting material has few pores and can well resist permeation of water and various zwitterions, so that the high-flowability ultrahigh-strength cement-based grouting material is suitable for offshore structure grouting construction. The invention also discloses a preparation method of the high-fluidity ultrahigh-strength cement-based grouting material, wherein the preparation method is simple, simple and convenient to operate, easy in control of preparation conditions and low in requirements on production equipment, and is a method for easily realizing industrial production.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high-fluidity ultra-high-strength cement-based grouting material and a preparation method thereof, which are more suitable for offshore engineering projects. Background technique [0002] Cement-based grouting material is a dry-mixed material composed of cement as the basic material, an appropriate amount of fine aggregate and a small amount of concrete admixture and other materials. After mixing with water, it has large fluidity, early strength, high strength, micro-expansion, and compactness. and other performance. [0003] With the continuous expansion of my country's urban scale and the continuous deepening and improvement of infrastructure construction, and the construction of heavy industry from extensive to intensive development is in full swing, various large and special-shaped structures have emerged, and different structures and different Service conditions...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B111/70
CPCC04B28/14C04B2111/70C04B2201/50
Inventor 叶华亮商得辰王加军张文进余松柏
Owner 华新超可隆新型建材科技(黄石)有限公司
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