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Liquefied consolidated soil and preparation method thereof

A technology for consolidating soil and solution, applied in the field of liquefied consolidated soil and its preparation, can solve the problems of difficult construction, difficult quality control, difficult maintenance, etc., to save resources and environmental protection, avoid secondary treatment, and reduce land use. The effect of resources

Pending Publication Date: 2021-09-17
河南绿岩工程科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of backfilling, the water, pipes, and access roads of buildings are subsidence and damaged, and accidents of loss of use function occur from time to time.
At the same time, the backfilling of the foundation trench cannot be backfilled densely due to the constraints of backfilling conditions, space and other factors, which will bring harm to the seismic performance of the building.
The traditional technology mostly uses plain soil or lime soil layered with small tamping equipment for construction. The construction is difficult, the construction period is long, and the quality is difficult to control. Therefore, most projects have to use plain concrete for backfilling in order to ensure the quality of backfilling.
The cost of backfilling with plain concrete is high, and the high strength brings difficulties to later repairs and maintenance
In addition, a large amount of solid waste generated in the production process of the existing construction industry is usually made into backfill materials that need to be paved and rolled. This backfill material is limited by factors such as backfill conditions and space, and cannot be used without compaction. backfill compact

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation is as follows, select the following two groups of material components in parts by mass, one group is vibrating and stirring, and the other group is non-vibrating stirring and record the data:

[0045] Soil: 80 parts;

[0046] Gelling material: 5 parts;

[0047] Dispersant sodium polyacrylate: 0.01 part;

[0048] Water: 20 parts;

[0049] The composition of the above-mentioned gelling material is composed as follows according to the mass parts:

[0050] Portland cement PO42.5: 2 parts;

[0051] Slag powder: 1.5 parts;

[0052] Steel slag powder: 1 part;

[0053] Fly ash: 0.5 parts;

[0054] The above-mentioned soil is a non-polluted soil with a particle size of ≤20 mm, a pH of 7.2, and a plasticity index of 13.

[0055] The preparation process is as follows:

[0056] S1: Screen the original soil to remove impurities, and then crush it into qualified soil with a particle size of ≤20mm;

[0057] S2: The dispersant sodium polyacrylate and water are ...

Embodiment 2

[0065] Now the preparation is as follows, select the following two groups of material components in mass parts, one group is vibrating and stirring, and the other group is non-vibrating stirring and record the data:

[0066] Construction solid waste recycled aggregate: 100 parts;

[0067] Gelling material: 20 parts;

[0068] Waterproofing agent potassium methyl silicate: 1 part;

[0069] Water: 40 parts;

[0070] The composition of above-mentioned cementitious material is as follows:

[0071] PS42.5 cement: 8 parts;

[0072] Red mud: 6 parts;

[0073] Steel slag powder: 4 parts;

[0074] Desulfurization gypsum: 2 parts;

[0075] The above-mentioned construction solid waste recycled aggregate is: construction solid waste crushing and screening recycled mixed aggregate particle size ≤ 4.75mm, in which the recycled aggregate with a particle size range of 2.36mm accounts for more than 90% of the construction solid waste mixed aggregate, The content of organic matter is 1wt%...

Embodiment 3

[0086] Now the preparation is as follows, select the following two groups of material components in mass parts, one group is vibrating and stirring, and the other group is non-vibrating stirring and record the data:

[0087] Mud: 90 parts;

[0088] Gelling material: 14 parts;

[0089] Dispersant potassium polyacrylate: 0.25 part;

[0090] Waterproofing agent sodium methyl silicate: 0.5 part;

[0091] Water: 5 parts;

[0092] The composition of the above-mentioned cementitious material is as follows:

[0093] PO42.5 cement: 5 parts;

[0094] Fly ash: 4 parts;

[0095] Red mud: 3 parts;

[0096] Phosphogypsum: 2 parts.

[0097] The particle size of the mud lumps contained in the above mud is ≤20mm, and the mud lumps of 5mm-20mm account for no more than 5% of the mud, the pH is 7.3, the organic matter content is 1.5wt%, and the water content is 60%.

[0098] The preparation process is as follows:

[0099] S1: Prepare the waterproofing agent sodium methyl silicate and wat...

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Abstract

The invention belongs to the field of comprehensive utilization of solid wastes, and particularly relates to liquefied consolidated soil and a preparation method thereof. According to the liquefied consolidated soil, soil is used as a main raw material, a cementing material, a dispersing agent, an additive and water in a certain proportion are added, a vibration stirring technology is adopted, aggregate is made to be uniform in macro and micro, a large-flow-state and pumpable liquefied consolidated material is formed, the strength, density and expansion degree are adjustable, and the liquefied consolidated soil is suitable for backfilling of fertilizer grooves, pipe culverts, cavities and abutment backs and reinforcing of building foundations, road subgrade filling, and riverway, lake and coastline embankment reinforcement, seepage prevention and the like. The problems of narrow space, non-uniform compaction of special-shaped end faces, improper non-excavation cavity backfilling and non-uniform mixing of the flow-state solidified soil by using the traditional mixing equipment are solved, and the liquefied consolidated soil has the advantages of no vibration, self compaction, high strength, anti-permeability, seismic resistance, stable volume and environmental protection.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of solid waste, in particular to a liquefied and consolidated soil and a preparation method thereof. Background technique [0002] In recent years, there have been more and more deep foundation pit support projects. In the process of backfilling foundation trenches of various projects, it is often encountered that the backfilling space of foundation trenches is narrow, the backfilling depth is large, the quality of backfill tamping is unstable, and high quality is required. problem. Due to the lack of compactness of the backfill, the water, pipes, and access roads of the buildings are subsidence and damaged, and accidents of loss of use functions occur from time to time. At the same time, the backfilling of the foundation trench cannot be backfilled densely due to factors such as backfilling conditions and space, which will bring harm to the seismic performance of the building. The tradi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2201/50C04B18/142C04B18/141C04B18/08C04B14/361C04B24/2641C04B18/0409C04B18/064C04B18/167C04B12/04C04B22/144C04B18/0418
Inventor 黄昆鹏黄凯强翟志辉胡晓萍卢跃春王梦瑶张乐虎
Owner 河南绿岩工程科技有限公司
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