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Slag powder and coal ash grouting-filling material and preparation method thereof

A technology for filling material and fly ash, which is applied in the field of slag fly ash grouting filling material and its preparation, and can solve the problems of low stone rate, large drying shrinkage, and many micro-cracks.

Inactive Publication Date: 2019-09-20
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Geopolymer grouting filling materials mainly use industrial waste slag powder as raw material, and alkali activator as active agent, but in the grouting project, geopolymer grouting filling materials have low calculus rate, large dry shrinkage, and many microcracks and other shortcomings, which limit its wide application

Method used

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  • Slag powder and coal ash grouting-filling material and preparation method thereof
  • Slag powder and coal ash grouting-filling material and preparation method thereof
  • Slag powder and coal ash grouting-filling material and preparation method thereof

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preparation example Construction

[0031] A kind of slag fly ash fly ash grouting filling material preparation method of the present invention comprises following specific steps:

[0032] Step 1), weighing raw materials according to mass fraction: including 100-140 parts of blast furnace slag powder, 60-100 parts of fly ash, 80-100 parts of water, 42-72 parts of water glass solution, and 5-15 parts of KOH solid , 5-15 parts of styrene-acrylic emulsion, 5-10 parts of elastic emulsion, 2-4 parts of defoamer and 1-2 parts of water reducing agent;

[0033] Prepare B solution: Mix the weighed water glass solution and KOH solid until the KOH solid is completely dissolved in the water glass solution to obtain B solution; specifically, pour the KOH solid into the water glass solution and stir slowly until it is completely dissolved;

[0034] Step 2), mix well weighed blast furnace slag powder, fly ash, water reducer, water, elastic emulsion and styrene-acrylic emulsion to obtain A mixture; specifically, mix blast furna...

Embodiment 1

[0036] Embodiment 1 Preparation of existing geopolymer grouting filling material:

[0037] Step 1), according to the mass fraction, weigh raw materials: 120 parts of blast furnace slag powder, 80 parts of fly ash, 80 parts of water, 70 parts of dispersion liquid, 1 part of water reducer, 2 parts of defoamer;

[0038] Step 2), pour the weighed KOH solid into the water glass solution and stir slowly until the KOH solid is completely dissolved to obtain the B solution;

[0039] Step 3), put the weighed blast furnace slag powder and fly ash into the mixer and stir evenly, then put in the water reducer and water in turn, and stir at 100r / min for 5min to obtain the A mixture;

[0040] Step 4), pour the prepared solution B into the mixture A, add a defoamer, and stir at 300 r / min for 3 minutes to obtain a grouting filling material.

[0041] Use the grouting pressure pump and the grouting pipe to inject the grouting filling material into the designated area for the grouting filling e...

Embodiment 2

[0043]Step 1), weigh raw materials according to mass fraction: 120 parts of blast furnace slag powder, 80 parts of fly ash, 80 parts of water, 60 parts of water glass solution, 10 parts of KOH solid, 15 parts of styrene-acrylic emulsion, 10 parts of elastic emulsion , 1 part of water reducer, 2 parts of defoamer;

[0044] Step 2), pour the weighed KOH solid into the water glass solution and stir slowly until the KOH solid is completely dissolved to obtain the B solution;

[0045] Step 3), put the weighed blast furnace slag powder and fly ash into the mixer and stir evenly, then put in the water reducer and water in turn, and stir at 100r / min for 5min to obtain the A mixture;

[0046] Step 4), pour the prepared solution B into the mixture A, add a defoamer, and stir at 300 r / min for 3 minutes to obtain a grouting filling material.

[0047] Use the grouting pressure pump and the grouting pipe to inject the grouting filling material into the designated area for the grouting fill...

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Abstract

The invention discloses a slag powder and coal ash grouting-filling material and a preparation method thereof. The preparation method comprises the following steps: enabling water glass solution and KOH solid to be mixed to form alkaline solution, after adequately mixing blast furnace slag powder, coal ash and water, adding styrene-acrylic emulsion, elastic emulsion, a deformer and a water reducer, enabling the blast furnace slag powder and the coal ash to be adequately mixed, increasing a contact area between the blast furnace slag powder and the coal ash, reducing bubbles generated while stirring the organic emulsion by using the defoamer, reducing the residual bubbles in slurry, and using the obtained alkaline solution to be mixed with the blast furnace slag powder and the coal ash, enabling an aluminum oxide in the blast furnace slag powder and the coal ash to react firstly, and reacting to generate a calcium oxide and providing long-term strength increase, and mixing the slag powder and the coal ash in the above proportion, preventing a single type of the slag powder or the coal ash from being excessively rapidly coagulated, and adding the styrene-acrylic emulsion and the elastic emulsion, preventing from generating a dry-shrinkage phenomenon after reunion in coal ash and slag powder reaction processes.

Description

technical field [0001] The invention relates to the field of road maintenance materials, in particular to a slag fly ash grouting filling material and a preparation method thereof. Background technique [0002] With the continuous increase of highway traffic volume, in some places with poor geology, the local strength of the subgrade is insufficient, the subsidence of the subgrade or the dynamic water erosion of the base, resulting in different degrees of subsidence of the road surface or hollowing out of the bottom of the slab, which poses a serious hazard to the safety of vehicles on the road. . Among them, static pressure infiltration grouting is the main technical means to deal with roadbed subsidence. At present, the commonly used grouting filling material is cement grouting filling material. Due to the large energy consumption of cement production and the great damage to the environment, grouting filling is hindered. Green and sustainable development of materials. Am...

Claims

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Application Information

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IPC IPC(8): C04B28/26
CPCC04B28/26C04B2111/70C04B2201/50C04B18/141C04B18/08C04B22/062C04B24/24C04B24/26C04B2103/302C04B2103/50
Inventor 张争奇田中男张伟刘恒彬刘鑫张英楠方滢杨建华唐周鸣
Owner CHANGAN UNIV
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