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Premixed flow-state stabilized soil

A technology of solidifying soil and fluid state, which is applied in the field of civil engineering and construction materials, can solve the problems of waste of land resources and soil resources, high engineering cost, waste, etc., and achieve the effect of saving material costs, saving transportation costs, and avoiding secondary treatment

Inactive Publication Date: 2017-11-28
王继忠 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the deep mixing method is mostly used for foundation treatment. After adding cement and other curing agents into the in-situ soil, it is forced to stir to combine with the soil to improve the strength. However, this in-situ mixing is due to the lack of flow and operating space. , and mechanical equipment and other reasons, resulting in low strength after treatment, and it is more difficult to form piles for foundation pit support curtain walls; Lime soil backfilling, or using concrete and other materials to directly replace the soil body, the process is complicated, the cost is high, and a lot of waste is caused; in special areas such as mine goafs, foundation trenches, and fertilizer trenches, industrial waste such as mine tailings is used or concrete is used. Backfill directly, the construction surface is narrow and difficult to construct, and the project cost is high
[0003] On the other hand, in the foundation treatment of various projects such as ports, roads, mines, and urban construction, the excavated and replaced soil and muck can reach as high as one billion or billions of cubic meters per year. Most of the soil and dregs are not effectively recycled and utilized, but are regarded as waste piles and discarded, thus causing a lot of waste of land resources and soil resources, and easily causing secondary pollution to the surrounding environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Embodiment 1: The main material is the natural silty clay excavated from the foundation trench, with a water content of 14%, and the soil solidifying agent is the secondary material. Salt mineral clinker), activator (using sulfoaluminate and calcium hydroxide), the soil is transported to the mixer through the transmission of ground machinery, and at the same time, the soil solidifier is mixed with a certain proportion of water to form a slurry and also transported In the mixer, through the uniform stirring of the mixer, a building material with fluidity and a certain strength is formed after hardening; the mass percentage of the ready-mixed fluid solidified soil in this embodiment 1 is: 90% of soil, and the solidified soil 10% agent (8% active silicon-aluminum substance, 2% activator), the amount of water is 15% of the total mass of soil and curing agent, the slump of the solidified soil after uniform stirring is 180mm; compressive strength test Data: The curing system i...

Embodiment 2

[0028] Embodiment 2: Take the natural silty clay excavated from the foundation trench as the main material, with a water content of 15%, and take the soil solidifying agent as the secondary material. Composed of ground steel slag, ground slag, fly ash), activator (using sulfoaluminate and derivatives), crystallization inducer (using ultrafine calcium carbonate powder), the soil is transported to the In the mixer, at the same time, the soil solidifying agent and a certain proportion of water are mixed to form a slurry that is also transported to the mixer, and through the uniform stirring of the mixer, a building material with fluidity and a certain strength after hardening is formed; The mass percentage of the mixed liquid solidified soil is: 77% soil, 23% soil solidifying agent (including 15% active silicon-aluminum substance, 3% activator, and 5% crystallization inducer), and the amount of water is The total mass of soil and curing agent is 16%, and the slump of the solidifi...

Embodiment 3

[0029] Embodiment 3: take the natural silty clay and sandy soil excavated from the road as the main material, sand content 20% in the soil, water content 17%, take the soil solidifying agent as the secondary material, and the soil solidifying agent consists of Active silicon-aluminum material (mixed with high-temperature calcined silicate mineral clinker, pulverized coal gangue, and fly ash), activator (using sulfoaluminate and derivatives), crystallization inducer (using ultra-fine carbonic acid Calcium powder), dispersant (using naphthalenesulfonate formaldehyde condensate), micro-expansion agent (calcined magnesium oxide and calcium oxide), the soil is transported to the mixer through the transmission of ground machinery, and the soil is solidified at the same time Agent and a certain proportion of water are mixed to form a slurry that is also transported to the mixer, and through the uniform stirring of the mixer, a building material with fluidity and a certain strength aft...

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Abstract

The invention provides premixed flow-state stabilized soil. The premixed flow-state stabilized soil is characterized in that the premixed flow-state stabilized soil is a building material which is formed by taking natural soil mass obtained nearby as a primary material, taking a soil mass stabilizing agent as a secondary material and conducting conveying and even stirring through ground machines after adding a certain ratio of water, has liquidity and has certain strength after being hardened, and the premixed flow-state stabilized soil can be widely used for foundation stabilization, groove backfilling, road roadbeds, foundation pit supporting and protecting curtain walls and mine goaf backfilling; and according to component properties of soil and different requirements for finished product strength, materials forming the premixed flow-state stabilized soil include, by mass, 58%-92% of the soil and 8%-42% of the soil mass stabilizing agent. The stabilized soil is high in strength and good in stability after being stabilized, and the premixed flow-state stabilized soil has the beneficial effects that resources are saved, cost is saved, environment friendliness is achieved, construction is flexible, operation is convenient, and the application range is wide.

Description

technical field [0001] The invention relates to a civil construction material, in particular to a ready-mixed fluid solidified soil. Background technique [0002] At present, in the construction process of various projects in our country, we often encounter the treatment requirements of soil improvement and reinforcement, such as foundation treatment, roadbed reinforcement, etc., and often encounter specific parts such as mine goafs and trenches. The pouring and backfilling aspects of the construction work. In response to these construction needs, there are certain limitations in the design schemes and construction methods currently adopted by practitioners. For example, the deep mixing method is mostly used for foundation treatment. After adding cement and other curing agents into the in-situ soil, it is forced to stir to combine with the soil to improve the strength. However, this in-situ mixing is due to the lack of flow and operating space. , and mechanical equipment a...

Claims

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Application Information

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IPC IPC(8): E02D3/12C09K17/12C09K103/00
CPCC09K17/12C09K2103/00E02D3/12
Inventor 王继忠张连喜
Owner 王继忠
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