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Reinforcement grouting material

A technology of grouting material and mass fraction, applied in the field of reinforcing grouting material, can solve the problems of fast flow loss, large bleeding of the slurry, poor fluidity, etc., and achieve the effects of poor stability, good self-tightness, and good self-flowing properties.

Inactive Publication Date: 2019-02-22
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the fact that the existing grouting materials do not meet the construction requirements of tunnel and culvert reinforcement, the on-site deployment of grouting materials has disadvantages such as poor stability, poor fluidity, rapid flow loss, large slurry bleeding, easy segregation and layering, and final mechanical properties of the slurry are not up to standard. , the invention provides a kind of reinforcement grouting material, it comprises as follows:

Method used

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  • Reinforcement grouting material

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Add 500kg of low-alkalinity fast-hardening sulfoaluminate cement with a total alkalinity of less than 0.6%, 45kg of S140 superfine mineral powder, 43.5kg of silica fume with a particle size of 0.15 microns, and UEA-H retarding pumping concrete expansion agent. 50kg, 350kg of quartz sand with a fineness modulus of 2.5, 4.0kg of TOJ-10T high-water-reducing polyether-type polycarboxylate early-strength water-reducer with a water-reducing rate of 25%, 2..0kg of L-tartaric acid, 0.5cm basalt chopped fiber 2.5kg, E-325D type GPE polyether defoamer with a relative molecular weight of 3000-3600 1.0kg, lithium carbonate 2.0kg; mix and stir evenly to prepare tunnel and culvert reinforcement grouting material.

Embodiment 2

[0043] Sequentially add 600kg of low-alkalinity fast-hardening sulfoaluminate cement with a total alkalinity of less than 0.6%, 20kg of S140 ultra-fine mineral powder, 50kg of silica fume with a particle size of 0.1 micron, 62kg of UEA-H low-alkali antifreeze concrete expansion agent, fine 250kg of quartz sand with a degree modulus of 2.3, 6.0kg of TOJ-10T high-water-reducing polyether-type polycarboxylate early-strength superplasticizer with a water-reducing rate of 25%, 5.0kg of L-tartaric acid, and 0.5cm chopped basalt Fiber 2.5kg, G-20B type linear polysiloxane defoamer with a relative molecular weight of 5000-6000 2.5kg, lithium carbonate 2.0kg; mix and stir evenly to prepare tunnel and culvert reinforcement grouting material.

Embodiment 3

[0045] Add 590kg of low-alkalinity fast-hardening sulfoaluminate cement with a total alkalinity of less than 0.6%, 40kg of S140 ultrafine mineral powder, 20kg of silica fume with a particle size of 0.3 microns, and 80kg of UEA-H retarding pumping concrete expansion agent. , 252kg of quartz sand with a fineness modulus of 3.0, 6.0kg of TOJ-10A retarded polyether polycarboxylate early strength superplasticizer with a water reducing rate of 25%, 5.0kg of L-tartaric acid, 1.0cm chopped basalt Fiber 2.0kg, E325-D type GPE type polyether defoamer with a relative molecular weight of 3000-3600 3.0kg, lithium carbonate 2.0kg; mix and stir evenly to prepare tunnel and culvert reinforcement grouting material.

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Abstract

The invention provides a reinforcement grouting material which comprises the following raw materials in parts by mass: 500-600 parts of sulphate aluminum cement, 20-45 parts of mineral powder, 20-50 parts of silica fume, 50-80 parts of expanding agent, 250-350 parts of quartz sand, 4-6 parts of polycarboxylic acid early-strength type water reducer, 2-5 parts of tartaric acid, 0.5-2.5 parts of basalt fiber, 1-3 parts of defoaming agent and 0.5-2 parts of lithium carbonate.

Description

technical field [0001] The invention provides a reinforcement grouting material. Background technique [0002] At present, most tunnels and culverts are made of concrete or reinforced concrete. During operation, concrete tunnels or culverts are prone to cracks, exposed bars, and water leakage, which affect the normal use of the structure. [0003] The remediation measures for defects such as cracking and falling off of the tunnel vault include lining inside, dismantling and replacing the structure, and pasting W steel belts, etc. The internal bushing method will greatly reduce the clearance of the tunnel, which may invade the tunnel boundary, and the construction time is long, and the speed limit of the train needs to be dealt with; the structural replacement method needs to suspend the line traffic, and the construction time is long, which seriously affects the normal operation of the line; W The construction process of the steel strip cladding method is complicated, the b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B111/70
CPCC04B28/06C04B2111/70C04B2201/50C04B18/141C04B18/146C04B2103/0068C04B14/06C04B2103/302C04B2103/12C04B24/06C04B14/4643C04B2103/50C04B22/10
Inventor 邹文浩马伟斌付兵先郭小雄李尧安哲立马超锋王志伟牛亚彬赵鹏张文达许学良柴金飞常凯
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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