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A kind of preparation method of grouting material

A grouting material and a technology for grouting, which are applied in the field of grouting material preparation, can solve the problems of water resistance, difficulty in accurate control, and injectability of grout leakage in large-pore formations, so as to improve high temperature resistance, have little negative impact on strength, and The effect of controllable coagulation time

Active Publication Date: 2020-06-26
GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The common ones are acrylamide, lignin, urea-formaldehyde resin, polyurethane resin and epoxy resin slurry, but their disadvantages are: low strength, no water resistance, poor durability, toxic itself, and harmful to the surrounding environment. It produces pollution and is more expensive; therefore, it is rarely used in general grouting reinforcement projects; the second is cement slurry, and currently widely used are cement single liquid, cement fly ash slurry, cement clay slurry and cement-water Glass double liquid, etc.; although this type of material has the advantages of abundant raw material sources, low price, and high strength of the specimen, it has long gelation time and is difficult to accurately control, high water separation rate, poor stability, and slow strength growth rate, etc. disadvantages, and there are phenomena such as easy grout leakage in large-pore formations and poor injectability in small-pore formations, and the quality of grouting is difficult to guarantee; especially for cement-water glass grout, the material has good groutability, high early strength, and It has the advantages of high calculus rate and low price, and it is one of the economical and practical grouting materials commonly used at present. However, the disadvantages of this grout are: large dry shrinkage of the calculus body, and rapid decline in strength in the later stage; curing in water for 28- After 90 days, the strength will drop significantly, and after half a year, it will crack and even disintegrate into powder, thus losing its use value; especially under the condition of drying and dehydration, the drying shrinkage and disintegration will be faster, so the slurry is generally limited to temporary It is used for strengthening anti-seepage and plugging of low-cost projects

Method used

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  • A kind of preparation method of grouting material
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  • A kind of preparation method of grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Take magnesium phosphate cement, admixtures, admixtures and aggregates, pour the raw materials into the silo according to the mixing ratio, stir evenly, and put the obtained dry mixture into 50kg of inner film plastic through an automatic packaging machine Then put the dry mixture into the mixing hopper of the mixing and conveying machine, connect the soft water pipe to the water injection port of the mixing and conveying machine, and connect the other end to the water source connector of the construction site, and follow the instructions in the manual Water demand requirements, add the required water through the liquid flow meter;

[0031] (2) After adding the required amount of water to the dry mix in the mixing and grouting integrated machine, stir continuously for 2.5 minutes to obtain a uniform slurry-like grouting material.

[0032] The mixed material is calculated in parts by weight: 80 kg of magnesium phosphate cement, 4 kg of admixture, 10 kg of admixture, ...

Embodiment 2

[0039] (1) Take magnesium phosphate cement, admixtures, admixtures and aggregates, pour the raw materials into the silo according to the mixing ratio, stir evenly, and put the obtained dry mixture into 50kg of inner film plastic through an automatic packaging machine Then put the dry mixture into the mixing hopper of the mixing and conveying machine, connect the soft water pipe to the water injection port of the mixing and conveying machine, and connect the other end to the water source connector of the construction site, and follow the instructions in the manual Water demand requirements, add the required water through the liquid flow meter;

[0040] (2) After adding the required amount of water to the dry mix in the mixing and grouting integrated machine, stir continuously for 2 minutes to obtain a uniform slurry-like grouting material.

[0041] The mixture is calculated in parts by weight: 120kg of magnesium phosphate cement, 15kg of admixture, 15kg of admixture, and 100kg of...

Embodiment 3

[0048] (1) Take magnesium phosphate cement, additives, admixtures and aggregates, pour the raw materials into the silo according to the mixing ratio, stir evenly, and put the obtained dry mixture into 50kg of inner film plastic through an automatic packaging machine Then put the dry mixture into the mixing hopper of the mixing and conveying machine, connect the soft water pipe to the water injection port of the mixing and conveying machine, and connect the other end to the water source connector of the construction site, and follow the instructions in the manual Water demand requirements, add the required water through the liquid flow meter;

[0049] (2) After adding the required amount of water to the dry mixture in the mixing and grouting integrated machine, stir continuously for 3 minutes to obtain a uniform slurry-like grouting material.

[0050] The mixture is calculated in parts by weight: magnesium phosphate cement 110kg, admixture 8kg, admixture 13kg, aggregate 70kg. ...

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PUM

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Abstract

A preparation method for a grouting material, wherein 80-12 parts of magnesium phosphate cement, 4-15 parts of an additive, 10-15 parts of an admixture and 50-100 parts of an aggregate are used as a grouting material; by means of reasonable proportional design, the amount of magnesium phosphate cement may be effectively reduced so that the powder content in the aggregate is controlled and costs are reduced. The grouting material is suitable for geological conditions in which engineering is complex, such as tunnel engineering, slope treatment engineering, mining engineering, and urban underground spaces, and the effect of the grouting material on surrounding rock reinforcement and anti-seepage and plugging in the geological conditions in which engineering is complex is improved.

Description

technical field [0001] The invention belongs to the technical field of grouting material preparation, in particular to a method for preparing grouting material. Background technique [0002] Grouting, also known as grouting, is to prepare certain materials into grout, inject it into the formation or cracks with grouting equipment to make it expand, gel or solidify, so as to achieve the purpose of reinforcing surrounding rock or preventing seepage and plugging. The flow process of grout is the result of the joint action of the grout and the injected medium. Because the engineering rock mass is under the complex hydrogeological conditions such as weak water seepage, the existing crack infiltration grouting materials and grouting theory are difficult to meet the actual engineering needs. The selection of grouting material (ie grout) is one of the key conditions for surrounding rock reinforcement and anti-leakage, especially for projects such as urban underground space, which ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/34C04B111/70
CPCC04B28/34C04B2111/70C04B22/0013C04B18/08C04B14/106C04B14/06
Inventor 邓竹林李国龙冯宗林安光文王敏莫人普郭奖覃文英
Owner GUIZHOU PHOSPHORUS MAGNESIUM MATERIAL CO LTD
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