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Environment-friendly wall-protecting slurry and preparation method thereof

A wall protection and mud technology, applied in the field of environmental protection wall mud and its preparation, can solve the problems of short wall stabilization time of deep pile foundations, low recycling rate, poor mud homogeneity, etc., and achieve enhanced physical anchoring effect and frictional resistance , Improve the effect of compactness

Inactive Publication Date: 2019-01-11
FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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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: Aiming at the problems of poor homogeneity of traditional mud, short time to stabilize the wall of deep pile foundation, high construction cost, low recycling rate and environmental pollution, an environmental protection wall mud and its preparation method are provided

Method used

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  • Environment-friendly wall-protecting slurry and preparation method thereof

Examples

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example 1

[0021] Take municipal solid waste incineration bottom ash and grind it in a grinder for 1 hour, pass through a 100-mesh sieve to obtain refined incineration bottom ash, take 0.2g p-toluenesulfonic acid, 15g ethyl orthosilicate, 5g methyltriethoxysilane , add 400g of absolute ethanol, stir and heat at 300r / min to 40°C, keep warm for 20min, then add 15g of silane coupling agent KH-550, 200g of finely incinerated bottom ash, continue to stir for 1h, stand and filter at 100 Dry at ℃ to constant weight to obtain pretreated incineration bottom ash. Take 400g of sodium bentonite, 100g of magnesium lithium silicate, 200g of pretreated incineration bottom ash, 16g of vegetable gum, 20g of sodium polyacrylate, and 10g of starch, and add them to 40L of deionized water. After mixing and stirring at 3000r / min for 20min, the material is discharged to obtain the mud for environmental protection wall.

example 2

[0023] Take municipal solid waste incineration bottom ash, grind it in a grinder for 1.5 hours, and pass through a 100-mesh sieve to obtain refined incineration bottom ash. Take 0.3g of p-toluenesulfonic acid, 22g of ethyl orthosilicate, 7g of methyl triethoxy Add silane into 600g of absolute ethanol, stir and heat at 350r / min to 45°C, keep it warm for 25min, then add 22g of silane coupling agent KH-550, 250g of finely incinerated bottom ash, continue to stir for 1.5h, let stand and filter Dry at 103°C to constant weight to obtain pretreated incineration bottom ash. Take 450g of sodium bentonite, 125g of magnesium lithium silicate, 250g of pretreated incineration bottom ash, 18g of vegetable gum, 25g of sodium polyacrylate, 13g of starch, and add 45L of deionized In water, mix and stir at 350r / min for 25min and then discharge to obtain the mud for environmental protection wall.

example 3

[0025] Take municipal solid waste incineration bottom ash, grind it in a grinder for 2 hours, and pass through a 100-mesh sieve to obtain refined incineration bottom ash. Take 0.4g of p-toluenesulfonic acid, 30g of ethyl orthosilicate, and 10g of methyltriethoxysilane , add 800g of absolute ethanol, stir and heat at 400r / min to 50°C, keep warm for 30min, then add 30g of silane coupling agent KH-550, 300g of refined incineration bottom ash, continue to stir for 2h, stand and filter at 105 Dry at ℃ to constant weight to obtain pretreated incineration bottom ash. Take 500g of sodium bentonite, 150g of magnesium lithium silicate, 300g of pretreated incineration bottom ash, 20g of vegetable gum, 30g of sodium polyacrylate, and 15g of starch, and add them to 50L of deionized water. After mixing and stirring at 400r / min for 30min, the material is discharged to obtain the mud for environmental protection wall.

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Abstract

The invention relates to environment-friendly wall-protecting slurry and a preparation method thereof and belongs to the technical field of environmental protection. By utilizing mutual adhesion between incinerator bottom ash and clay particles, the frictional resistance in the friction process is enhanced, polymerization and thickening reactions are gradually carried out between the incinerator bottom ash and vegetable gelatin and starch, mutually cross-linked mesh polymer chains are formed among high polymeric substances for coating and bonding the clay particles, and the particle voids arefilled until the whole clay system is solidified to become gel and cured, so that the physical anchoring effect between the incinerator bottom ash and the matrix can be enhanced, the load transfer efficiency of the interface layer of the composite material is improved, the effective contact area between the surface of the wall-protecting slurry and the matrix is enlarged, the cohesion force of thewall-protecting slurry is enhanced, and the problems that the traditional slurry is poor in homogeneity, wall stabilizing time of the deep pile foundation is short, the construction cost is high, thecyclic utilization rate is low and the environment is polluted are effectively solved.

Description

technical field [0001] The invention relates to an environmental protection wall mud and a preparation method thereof, belonging to the technical field of environmental protection. Background technique [0002] With the development of my country's railways, highways, and urban rail transit, construction techniques such as mud-water shields and underground diaphragm walls have technical advantages such as good construction safety, low environmental impact, and high construction quality, and are widely used in actual construction. The use of mud products for shield tunneling and underground diaphragm walls has also greatly increased. Mud for shield tunneling and underground diaphragm walls commonly used in the market is made of bentonite or clay mixed with tackifier, soda ash and water in a certain proportion. Traditional mud is made of bentonite As the main component, it is widely used in the wall protection construction of underground diaphragm walls, shield tunnels and rota...

Claims

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Application Information

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IPC IPC(8): C04B28/02
CPCC04B28/021C04B2111/00482C04B22/00C04B14/104C04B24/26C04B24/38C04B24/34
Inventor 胡次兵张桂芳史志新
Owner FOSHAN CHANCHENG DISTRICT NUOGAO ENVIRONMENTAL PROTECTION TECH CO LTD
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