A 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, etc., and achieve water damage resistance Good, high early strength, high durability effect

Active Publication Date: 2021-12-31
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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  • A non-metallic mineral grouting material for road subgrade reinforcement

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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 grout for road subgrade reinforcement, which comprises 50-60 parts by weight of calcined kaolin, 20-30 parts by weight of blast furnace slag powder, 01-20 parts by weight of double fly powder and additives; The additives include water-fixing coagulant, softener and leveling agent. The invention relates to a non-metallic mineral grout for road subgrade reinforcement, which includes calcined kaolin, blast furnace slag powder and double fly powder, water-fixing coagulant, softener and leveling agent. It adopts hydraulic solidification minerals, double fly powder and industrial waste slag materials and supplemented with additives. It only needs to add water and stir when using. It has the characteristics of high early strength, good injection fluidity, and high density after forming solidified slurry, which can effectively improve The mechanical compression strength of the road foundation, and the remarkable characteristics of good water damage resistance and high durability.

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