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Non-metallic mineral grouting material for road subgrade reinforcement

A technology of non-metallic minerals and grouting materials, which is applied in the field of non-metallic minerals grouting materials, can solve the problems that underground soil materials cannot be consolidated, roadbed reinforcement is useless, and grouting materials have poor adaptability, and achieve water damage resistance Good, high early strength, high durability effect

Active Publication Date: 2020-07-14
上海艺盛实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the grouting materials used for roadbed reinforcement in the market are mostly cement-based, supplemented by some additives and admixtures. Because the roadbed is a concealed project under the ground surface, its underground foundation materials and geographical structure are complex. However, the above-mentioned traditional grouting materials have poor adaptability and are often used in a certain area or a certain road section with good results, but in another area or road section, they have no effect, resulting in serious rework and waste.
[0003] There are many reasons why the subgrade cannot be reinforced, and the most important one is that the traditional grouting material cannot immediately form a wrapping material to fix the loose material of the subgrade in a complex underground environment (especially a water environment, sometimes a dynamic water environment), resulting in Strength, but often with groundwater loss, dispersion, or cannot be consolidated with underground soil materials to form reinforcement
As a result, the roadbed reinforcement is useless and does not have any effect

Method used

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  • Non-metallic mineral grouting material for road subgrade reinforcement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The non-metallic mineral grouting material used for road subgrade reinforcement involved in this embodiment is first made into powder form of calcined kaolin and blast furnace slag. Then add the powdered calcined kaolin, blast furnace slag powder, Shuangfei powder and additives into the dry blender according to the weight ratio, mix and stir for about 15 minutes to form a uniform dry powder, and pack it into the warehouse. The 100-mesh passing rate of the prepared powder was 99%.

[0013] The main chemical components of the selected calcined kaolin are silicon dioxide, ferric oxide and aluminum oxide. The main chemical component of the selected Shuangfei powder is calcium carbonate.

[0014] The selected blast furnace slag is blast furnace steelmaking industrial waste, the commercially available S95 granulated blast furnace slag has a density of 2.86 grams per cubic centimeter, and its main chemical components are calcium oxide, silicon dioxide and aluminum dioxide. T...

Embodiment 2

[0028] The difference between the non-metallic mineral grout for road subgrade reinforcement involved in this embodiment and the first embodiment is that the non-metallic mineral grout involved in this embodiment includes 55 parts by weight of calcined kaolin , 25 parts by weight of blast furnace slag powder, 15 parts by weight of Shuangfei powder, and 0.5 parts by weight of additives.

[0029] Further, the amount of the water-fixing coagulant is 0.3 parts by mass, the amount of the softener is 0.1 parts by mass, and the amount of the leveling agent is 0.1 parts by mass.

Embodiment 3

[0031] The difference between the non-metallic mineral grout for road subgrade reinforcement involved in this embodiment and the first embodiment is that the non-metallic mineral grout involved in this embodiment includes 60 parts by weight of calcined kaolin , 30 parts by weight of blast furnace slag powder, 20 parts by weight of Shuangfei powder, and 0.8 parts by weight of additives.

[0032] Further, the amount of the water-fixing coagulant is 0.4 parts by mass, the amount of the softener is 0.2 parts by mass, and the amount of the leveling agent is 0.2 parts by mass.

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Abstract

The invention discloses a non-metallic mineral grouting material for roadbed reinforcement. The non-metallic mineral grouting material is prepared from the following components in parts by weight: 50to 60 parts of calcined kaolin, 20 to 30 parts of blast furnace slag powder, 10 to 20 parts of heavy calcium carbonate powder and additives, wherein the additive comprises a water-retaining and coagulation-retaining agent, a softening agent and a leveling agent. The non-metallic mineral grouting material for roadbed reinforcement comprises calcined kaolin, blast furnace slag powder, heavy calciumcarbonate powder, t water-retaining and coagulation-retaining agent, the softening agent and the leveling agent. Hydraulic solidified minerals, heavy calcium carbonate powder, industrial waste residues and additives are adopted, only water needs to be added for stirring in the using process, the characteristics of being high in early strength, good in injection fluidity, high in compactness aftersolidified slurry is formed and the like are achieved, the road foundation mechanical compression strength can be effectively improved, and the remarkable characteristics of being good in water damageresistance, high in durability and the like are achieved.

Description

technical field [0001] The invention relates to the technical field of grouting material for road subgrade reinforcement, in particular to a non-metallic mineral grouting material for road subgrade reinforcement. Background technique [0002] At present, the grouting materials used for roadbed reinforcement in the market are mostly cement-based, supplemented by some additives and admixtures. Because the roadbed is a concealed project under the ground surface, its underground foundation materials and geographical structure are complex. However, the above-mentioned traditional grouting materials have poor adaptability, and often work well in a certain area or a certain section of road, but have no effect when used in another area or section of road, resulting in serious rework and waste. [0003] There are many reasons why the subgrade cannot be reinforced, and the most important one is that the traditional grouting material cannot immediately form a wrapping material to fix t...

Claims

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Application Information

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IPC IPC(8): C04B26/28
CPCC04B26/285C04B2111/0075C04B2201/50C04B14/106C04B14/28C04B18/141C04B2103/0068C04B2103/30
Inventor 沈鸿慈孙超
Owner 上海艺盛实业有限公司