Grouting material for prestress pore duct

A pore grouting and prestressing technology, which is applied in the field of building materials, can solve the problems of easy bleeding and poor fluidity of the grouting slurry, and achieve the effects of reducing bleeding, reducing contact angle and improving dispersibility.

Inactive Publication Date: 2018-11-27
王景硕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a prestressed channel pressure grout for the poor fluidity of the current grout and the problem of easy bleeding

Method used

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  • Grouting material for prestress pore duct

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preparation example Construction

[0030] A preparation method for a biological polysaccharide complex, comprising the steps of:

[0031] (1) Take Bacillus licheniformis powder and mix it with sterile water at a mass ratio of 1:20~30 to obtain a bacterial solution. Take the bacterial solution and inoculate it into the activation medium at a 6% inoculation amount. Shake culture at 280r / min for 10~12h to obtain activated culture solution, take the activated culture solution and centrifuge at 3000~4000r / min for 10~15min, take the supernatant, add 2~4 times the weight of the supernatant to mix, shake for 10 Resuspend for ~20min to obtain a suspension, take the suspension and add agar and deionized water at a mass ratio of 10:2~3:100 to mix, stir at 350~500r / min for 30~50min to obtain a base solution, take the base solution Add CaCl with a concentration of 0.1mol / L of 20~35% of the mass of the base liquid 2 Mix the solutions, refrigerate at 1~4°C for 1~2 days, obtain the feed liquid, and set aside;

[0032] (2) Ta...

Embodiment 1

[0040] Plasticizer: Mix dibutyl phthalate and epoxy soybean oil at a mass ratio of 4:1 to obtain a plasticizer.

[0041] Defoamer: Mix polydimethylsiloxane and silicon dioxide at a mass ratio of 5:1 to obtain a defoamer.

[0042] Water reducer: polycarboxylate water reducer model XBW-10.

[0043] Preservative: Butyl paraben.

[0044] Expansion agent: mix alum stone, magnesium oxide and aggregate according to the mass ratio of 4:1:2 to obtain the expansion agent.

[0045] Biogas slurry pretreatment: in a water bath at 40°C, mix biogas slurry, zeolite, and clay at a mass ratio of 5:1:0.1, stir and mix at 350r / min, leave to soak for 10 hours, filter, take the filtrate and add mature vinegar with a mass of 8% of the filtrate 1. Mix evenly with water twice the quality of the filtrate to obtain the pretreated biogas slurry.

[0046] Stearic acid compound liquid: at 30°C, take stearic acid, 4-dimethylaminopyridine, and dimethyl sulfoxide in a mass ratio of 5:1:8 and stir and mix t...

Embodiment 2

[0058] Plasticizer: Mix dibutyl phthalate and epoxy soybean oil at a mass ratio of 4:2 to obtain a plasticizer.

[0059] Defoamer: Mix polydimethylsiloxane and silicon dioxide at a mass ratio of 5:2 to obtain a defoamer.

[0060] Water reducer: polycarboxylate water reducer model JW-8.

[0061] Preservative: ethyl paraben.

[0062] Expansion agent: Mix alum stone, magnesium oxide and aggregate according to the mass ratio of 4:1:4 to obtain the expansion agent.

[0063] Biogas slurry pretreatment: in a water bath at 55°C, mix biogas slurry, zeolite, and clay according to the mass ratio of 5:2:0.1, stir and mix at 500r / min, let stand and soak for 12 hours, filter, take the filtrate and add mature vinegar with a mass of 15% of the filtrate 1. Mix evenly with water 5 times the mass of the filtrate to obtain the pretreated biogas slurry.

[0064] Stearic acid compound solution: at 45°C, take stearic acid, 4-dimethylaminopyridine, and dimethyl sulfoxide in a mass ratio of 5:1:12,...

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Abstract

The invention discloses a grouting material for a prestress pore duct, belonging to the field of building materials. According to the grouting material, illegal cooking oil is subjected to hot-meltingstirring, centrifugation, alkalization, activated clay adsorption and the like so as to generate pretreated illegal cooking oil, the pretreated illegal cooking oil is matched with a swelling agent and the like, so that the effects of multiple active groups are enhanced; the groups can generate an anchoring effect to cement particles and can stretch in a liquid phase through hydrophily of side chains, so that a huge adsorption structure is formed on the surfaces of the particles, a steric hinerance effect is achieved, and the bleeding effect is reduced; and by virtue of the effects of humic acid components and superfine coal ash in a grouting material system, the contact angle can be reduced, and the fluidity of the grouting material is improved. According to the grouting material, the problems that the grouting material is poor in fluidity and easily bleeds at present are solved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a prestressed tunnel pressure grout. Background technique [0002] Road pressure slurry is a product specially used for post-tensioned prestressed pipe (hole) grouting construction. It is optimized from a variety of high-quality cement-based materials and high-performance admixtures. It has excellent fluidity, stable slurry, and full filling Good hardness, adjustable setting time, no shrinkage, micro-expansion, high strength, no harmful substances to steel bars, etc. Prestressed concrete is widely used in bridge structures because of its unique economic and technical advantages. Grouting of tunnels is a key process in prestressed concrete construction. Its main function is to protect the prestressed steel strands from being exposed and avoid corrosion; It is to make the prestressed steel strand and concrete well combined to ensure the effective transmission of prest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B20/02C04B24/38
CPCC04B20/02C04B28/04C04B40/0039C04B2201/50C04B14/06C04B18/08C04B22/142C04B22/066C04B22/06C04B24/42C04B24/045C04B24/08C04B24/38C04B22/062C04B2103/302C04B24/06C04B24/16C04B24/121C04B18/30C04B18/18
Inventor 王景硕陈建春胡晓玉
Owner 王景硕
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