Foam sludge mixed light soil and preparation method thereof

A lightweight soil and silt technology, applied in ceramic products, other household appliances, applications, etc., can solve problems such as affecting application, high treatment costs, soil erosion, etc., and achieve good economic benefits, environmental improvement, and cost savings.

Inactive Publication Date: 2019-04-16
JIANGSU ZHAOTONG ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its high cost, the surface of the hardened foam lightweight soil cracks, resulting in the absorption of a large amount of external moisture, resulting in a reduced service life and affecting its application
[0003] In many projects, a large amount of silty waste soil without strength is produced. These waste soils cannot be used for foundation soil backfill, and long-distance earthwork transportation has caused the loss of a large amount of economic resources.
Excavating fill soil that meets the backfill foundation will cause a large amount of water and soil loss, which has an extremely bad impact on the ecological environment
At the same time, the economic cost of backfilling soil samples in the project is improved
Moreover, our country has a large number of rivers, and there are a large number of silty soil layers on both sides of the river. At present, the measures taken for these silty soil layers are to dig out the silty soil layers and bury them nearby, which greatly consumes the country's cultivated land resources and affects the environment. Pollution is a serious hazard
Another way of sludge treatment is to dewater the sludge, but the current sludge dehydration method is only suitable for small-scale sludge disposal, and the treatment cost is high, which greatly increases the cost of the project

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: It is composed of the following components in mass percentage, 45% raw soil, 16% water, 2% gypsum powder, 13% cement binder, 17.5% foaming agent, 1.5% sodium sulfate, 5% low viscosity The cellulose ether; the raw material soil is the silt with a particle size of less than 4.5mm and a moisture content of 40%~65%.

[0028] Step (1) collect silt soil samples for crushing, and sieve them after crushing to obtain raw soil with a particle size greater than 4.75mm;

[0029] Step (2) Transport the raw soil obtained in step (1) to the first-stage mixing barrel of the mixer, add water and stir until the plastic limit water content of the raw soil is 9.5%, and adopt the joint measurement method of liquid and plastic limit, and take the cone depth of 2mm Corresponding moisture content;

[0030] Step (3) Use the electronic induction scale in the mixer's first-stage collecting bucket to weigh the cement and micro-silica fume. After the weighing is completed, lower it t...

Embodiment 2

[0033] Embodiment 2: be made up of each component of following mass percentage, 47% raw material soil, 16% water, 2% gypsum powder, 12% cement consolidating agent, 15% blowing agent, 1% lithium carbonate, 7% ultra-low Viscosity of cellulose ether; raw material soil is silt with a particle size of less than 4.5mm and a moisture content of 40% to 65%.

[0034] Step (1) collect silt soil samples for crushing, and sieve them after crushing to obtain raw soil with a particle size greater than 4.75mm;

[0035] Step (2) Transport the raw soil obtained in step (1) to the first-stage mixing tank of the mixer, add water and stir until the plastic limit water content of the raw soil is 11%, and adopt the joint measurement method of liquid and plastic limit, and take the cone depth of 2 mm Corresponding moisture content;

[0036] Step (3) Use the electronic induction scale in the mixer's first-stage collecting bucket to weigh the cement and micro-silica fume. After the weighing is comple...

Embodiment 3

[0039] Embodiment 3: be made up of each component of following mass parts, 50% raw material soil, 17% water, 3% gypsum powder, 10% cement consolidation agent, 12% blowing agent, 3% sodium sulfate, 5% low Viscosity of cellulose ether; raw material soil is silt with a particle size of less than 4.5mm and a moisture content of 40% to 65%.

[0040] Step (1) collect silt soil samples for crushing, and sieve them after crushing to obtain raw soil with a particle size greater than 4.75mm;

[0041] Step (2) Transport the raw soil obtained in step (1) to the first-stage mixing barrel of the mixer, add water and stir until the plastic limit water content of the raw soil is 12.5%, and adopt the joint measurement method of liquid and plastic limit, and take the cone depth of 2mm Corresponding moisture content;

[0042] Step (3) Use the electronic induction scale in the mixer's first-stage collecting bucket to weigh the cement and micro-silica fume. After the weighing is completed, lower ...

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Abstract

The invention relates to traffic construction engineering materials, in particular to foam sludge mixed light soil and a preparation method thereof. The foam sludge mixed light soil is characterized by being prepared from, by mass, 45-50% of raw material soil, 15-17% of water, 1-3% of a drying agent, 10-13% of a cement consolidation agent, 12-17.5% of a foaming agent, 1.5-3% of an early strength agent and 5-7% of a thickening water-retaining agent; the raw material soil is sludge with the particle diameter smaller than 4.5 mm and water content of 40-65%. The foam sludge mixed light soil and the preparation method thereof have the advantages that the pressure to the lower structure is lower, the strength is higher, sludge waste soil is recycled, and the foam sludge mixed light soil has highindustry value.

Description

technical field [0001] The invention relates to traffic construction engineering materials, in particular to foam silt mixed light soil and a preparation method thereof. Background technique [0002] Foam lightweight soil is a new type of concrete filling material developed in the past ten years. It fully foams the foaming agent mechanically through the foaming system of the foaming machine, and mixes the foam with cement slurry and other external materials. It is fully and evenly mixed according to a certain ratio, and then cast-in-place construction is carried out through the pumping system of the foaming machine, and it is a light-duty filling material with a large number of closed pores formed by natural curing. Foam lightweight soil has many advantages such as light weight, adjustable strength, high flow, low elasticity and good shock absorption, so it has good application prospects in traffic engineering, such as soft soil foundation treatment, cavity filling, urban P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/10C04B111/40
CPCC04B28/04C04B2111/00146C04B2111/40C04B18/146C04B22/143C04B22/147C04B22/10C04B24/383C04B18/0418C04B24/16C04B38/10C04B18/0436
Inventor 汤亚威谷波周加思杨朴薛树军
Owner JIANGSU ZHAOTONG ENG TECH CO LTD
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