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Retardation method for pretreated bundle of alkali-activated-carbonate/slag gel grouting material

A grouting material and carbonate technology, applied in the field of building materials, can solve the problems of large difference in the dosage of alkali components, large dosage, shortened gel time, etc., and achieves extended gel time, low cost, and high retarding efficiency. Effect

Inactive Publication Date: 2005-11-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tests have proved that these technological measures cannot effectively prolong the gel time of alkali-activated carbonate-slag grouting materials; and the use of admixtures such as malic acid, calcium hydroxide, phosphoric acid, sodium phosphate, and sodium carbonate can make alkali-activated carbon The gel time of carbonate-slag grouting material is shortened; sucrose has no obvious effect on the gel time of alkali-induced carbonate-slag grouting material; the use of zinc nitrate, lead nitrate, calcium nitrate, sodium chloride and other admixtures only It can slightly prolong the gel time of alkali-activated carbonate-slag grouting materials; although the use of sodium tetraborate can greatly prolong the gel time of alkali-activated carbonate-slag grouting materials, the sodium tetraborate The amount used is too large, accounting for about 12% of the mass of slag, and at the same time greatly reduces the fluidity of the grouting material
The above-mentioned retarding method of alkali slag cement with alkali metal silicate as the alkali component is not suitable for alkali-activated carbonate-slag grouting materials, because the amount of alkali components differs greatly between the two

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The realization process of the alkali-activated carbonate-slag grouting material pretreatment package retarding method is:

[0018] (1) At normal temperature, mix the water-quenched blast furnace slag powder with the alkali component solution whose modulus is 2.0, and the sum of the concentration of sodium oxide and silicon oxide mass percentage is 12%, and stir until uniform, and the water-quenched blast furnace slag powder and alkali The mass ratio of the component solutions is 1:0.75. After the slurry is sealed and stored for 24 hours, the pretreated slag slurry is prepared.

[0019] (2) In terms of parts by mass, 10 parts of pretreated slag slurry and 26 parts of modulus are 2.0, and the sum of sodium oxide and silicon oxide mass percentage concentrations is 39% of the alkali component solution and 32 parts of marginal carbonic acid The salt ore powder is stirred until uniform, and the alkali-activated carbonate-slag grouting material is prepared.

[0020] The alka...

Embodiment 2

[0022] The realization process of the alkali-activated carbonate-slag grouting material pretreatment package retarding method is:

[0023] (1) At normal temperature, mix the water-quenched blast furnace slag powder with the alkali component solution whose modulus is 2.0, and the sum of the concentration of sodium oxide and silicon oxide mass percentage is 10%, and stir until uniform, and the water-quenched blast furnace slag powder and alkali The mass ratio of the component solutions is 1:0.50. After the slurry is sealed and stored for 12 hours, the pretreated slag slurry is prepared.

[0024] (2) In terms of parts by mass, 10 parts of pretreated slag slurry and 14 parts of modulus are 1.4, and the sum of sodium oxide and silicon oxide mass percentage concentrations is 47% of the alkali component solution and 16 parts of marginal carbonic acid The salt ore powder is stirred until uniform, and the alkali-activated carbonate-slag grouting material is prepared.

[0025] The alka...

Embodiment 3

[0027] The realization process of the alkali-activated carbonate-slag grouting material pretreatment package retarding method is:

[0028] (1) At normal temperature, the water-quenched blast furnace slag powder is mixed with an alkali component solution whose modulus is 2.0 and the sum of the concentration of sodium oxide and silicon oxide mass percentage is 14%, and stirred until uniform, and the water-quenched blast furnace slag powder and alkali The mass ratio of the component solutions is 1:0.75. After the slurry is sealed and stored for 24 hours, the pretreated slag slurry is prepared.

[0029] (2) In terms of parts by mass, 10 parts of pretreated slag slurry and 11 parts of modulus are 1.4, and the sum of sodium oxide and silicon oxide mass percentage concentrations is 50% of the alkali component solution and 13 parts of marginal carbonic acid The salt ore powder is stirred until uniform, and the alkali-activated carbonate-slag grouting material is prepared.

[0030]The...

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Abstract

The invention provides a retardation method for pretreated bundle of alkali-activated-carbonate / slag gel grouting material comprises the steps of, at normal temperature, mixing mineral slag powder with alkaline constituent solution having a modulus of 1.4-2.0 and a mass percentage concentration 10-20% into slurry by the mass ratio of 1 : (0.5-0.75), sealing and stewing 3-24 hours, thus obtaining pre-processed slag slurry, calculated by mass portions, mixing 10 parts of pre-processed slag slurry, 10-100 parts alkaline constituent solution with the modulus of 1.4-2.0 and mass percentage concentration of 35-50%, 13-125 parts of marginal carbonate powdered ore, thus obtaining the end product.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an alkali-activated carbonate-slag grouting material pretreatment wrapping retarding method. Background technique [0002] Alkali-activated carbonate-slag grouting material is a new type of green grouting material obtained directly at room temperature by using natural marginal carbonate ore, blast furnace slag and sodium silicate solution. It is aimed at the insufficient density of the hardened body of the alkali-activated carbonate grouting material and the low strength in the later stage. On the basis of the alkali-activated carbonate grouting material, part of the by-product of the ironmaking industry-water-quenched blast furnace is added. A grouting material developed from slag. The so-called marginal carbonate ore refers to the carbonate rock whose CaO mass percentage content is less than 45% and MgO mass percentage content is 6% t...

Claims

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Application Information

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IPC IPC(8): C04B22/08
Inventor 余其俊赵三银殷素红文梓芸黄家琪乔飞郭文瑛
Owner SOUTH CHINA UNIV OF TECH
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