Uncemented geopolymer grouting material and preparation method thereof

A technology of grouting materials and geopolymers, applied in cement production, etc., can solve the problems of poor working performance, high production energy consumption, high price, etc., and achieve the effects of reducing the porosity of the system, increasing the utilization rate, and high stone formation rate

Inactive Publication Date: 2019-10-22
CHANGAN UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Using cement as grouting material produces high energy consumption, high price, and poor working performance

Method used

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  • Uncemented geopolymer grouting material and preparation method thereof

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preparation example Construction

[0034] A kind of preparation method of cementless geopolymer grouting material of the present invention, comprises following concrete steps:

[0035] Step 1), by mass fraction, weigh 100-140 parts of blast furnace slag powder, 60-100 parts of fly ash, 20-40 parts of silica fume, 60-90 parts of water, 200-400 parts of gravel, 54 parts of water glass solution -80 parts, 4-8 parts of NaOH solid, 0-1 part of defoamer, 3-5 parts of expansion agent, 0-1 part of retarder, 0-1 part of redispersible latex powder;

[0036] Preparation of B solution: Mix and stir the weighed water glass solution and NaOH solid until the NaOH solid is completely dissolved to obtain the B solution. Specifically, pour the NaOH solid into the water glass solution and stir slowly until it is completely dissolved, because the NaOH solid is soluble in water The glass solution will release heat, so it needs to be stirred slowly when stirring;

[0037] Step 2), prepare A mixture: mix the weighed blast furnace sl...

Embodiment 1

[0043] Step 1), take raw material by mass fraction:

[0044] 100 parts of blast furnace slag powder, 60 parts of fly ash, 20 parts of silica fume, 70 parts of water, 200 parts of gravel, 48 parts of water glass solution, 5 parts of NaOH solid, 1 part of defoamer, 3 parts of expansion agent, retarder 1 part, 1 part of redispersible latex powder;

[0045] Step 2), mix the weighed NaOH solid in the water glass solution, stir until the NaOH solid is completely dissolved, and obtain the B solution;

[0046] Step 3), put blast furnace slag powder, fly ash and silica fume into mixer and carry out dry mixing and mix evenly, make blast furnace slag powder, fly ash and silica fume fully mix, increase blast furnace slag powder, fly ash and The surface contact area between silica fumes, then put in defoamer, expansion agent, retarder, redispersible latex powder and water in sequence, first stir at 100r / min for 5min, then stir at 300r / min for 5min, get A mixture;

[0047] Step 4), pour ...

Embodiment 2

[0050] Step 1), take raw material by mass fraction:

[0051] 140 parts of blast furnace slag powder, 90 parts of fly ash, 30 parts of silica fume, 90 parts of water, 350 parts of gravel, 80 parts of water glass solution, 6 parts of NaOH solid, 1 part of defoamer, 5 parts of expansion agent, retarder 1 part, 1 part of redispersible latex powder;

[0052] Step 2), mix the weighed NaOH solid in the water glass solution, stir until the NaOH solid is completely dissolved, and obtain the B solution;

[0053] Step 3), put blast furnace slag powder, fly ash and silica fume into mixer and carry out dry mixing and mix evenly, make blast furnace slag powder, fly ash and silica fume fully mix, increase blast furnace slag powder, fly ash and The surface contact area between silica fume, then put in defoamer, expansion agent, retarder, redispersible latex powder and water in turn, first stir at 50r / min for 8min, then stir at 200r / min for 7min, get A mixture;

[0054] Step 4), pour the pr...

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Abstract

he invention discloses an uncemented geopolymer grouting material and a preparation method thereof. Gravel is used as a supporting material to improve the overall strength of the material, blast furnace slag powder, fly ash and silica fume are added, and the silica ash mainly composed of SiO2 can optimize the pore structure and reduce the porosity of the system; a water glass solution and NaOH are used to dissolve and rejoin active silicon, aluminum and calcium substances in the fly ash and slag powder in order to form hydration products which are C-S-H hydrated calcium silicate and C-S-A-Hhydrated calcium aluminosilicate, and a solution composed of the water glass solution and NaOH is used to firstly react the fly ash with alumina in the slag powder in order to ensure the increase of the reinforcing material after the calcium oxide removal, so the utilization rates of the blast furnace slag powder and the fly ash are effectively improved, and the working performances of the grouting material are improved. The grouting material prepared in the invention has the advantages of good fluidity, low bleeding ratio, high concretion rate, effectiveness in utilization of the industrial wastes which are slag powder and fly ash, and realization of the purpose of changing industrial wastes into valuables.

Description

technical field [0001] The invention relates to the field of highway grouting materials, in particular to a cement-free geopolymer grouting material and a preparation method thereof. Background technique [0002] A large amount of blast furnace slag powder is produced in the smelting of iron and steel in various parts of my country. Thermal power plants will produce a large amount of fly ash. Blast furnace slag powder and fly ash are industrial solid wastes. Stacking not only requires land occupation but also produces dust pollution to surrounding areas. [0003] 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 press...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B111/70
CPCC04B28/006C04B2111/70C04B18/142C04B18/08C04B18/146C04B14/06C04B12/04C04B22/062C04B2103/50C04B22/143C04B24/06C04B2103/0057Y02P40/10
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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