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Curing agent for curing/stabilizing silt (sludge) and soft foundation, and application thereof

A technology of curing agent and soft foundation, used in the field of curing agent and curing agent for curing and stabilizing sludge and soft foundation, can solve the problems of poor stability, low bearing capacity of consolidated body, long sludge dewatering time, etc. Good water immersion resistance, remarkable curing effect and low production cost

Active Publication Date: 2012-07-18
TIANJIN BLUE SKY ENVIRONMENT POLYTRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above problems, the purpose of the present invention is to provide a curing agent with less addition amount, fast precipitation in soft soil, high bearing capacity, and good water immersion resistance of the consolidated body, so as to solve the problem of consolidation in the existing sludge (sludge) solidification technology. Disadvantages of low body bearing capacity, long sludge dehydration time, and poor stability after curing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 5 parts of cement clinker, 10 parts of aluminum hydroxide, 10 parts of quicklime, 1 part of anhydrous gypsum, 50 parts of special gravel powder, 10 parts of sodium silicate, 0.1 part of sodium fluorosilicate, 1 part of anionic polyacrylamide, ten parts 1.5 parts of sodium dialkylbenzene sulfonate, 1.0 part of carrageenan concentrated powder; wherein the preparation of special gravel powder:

[0025] The raw meal used to prepare special gravel powder is preheated and partially decomposed by the preheater, and then the rotary kiln is used for heat exchange and clinker firing. As the temperature rises, the minerals of the gravel powder will turn into liquid Phase, after the clinker is fired, the temperature begins to drop, and finally the high-temperature clinker is cooled to the downstream conveyor belt by the clinker cooler for grinding. The preparation method adopts the conventional new dry-process cement rotary kiln production process.

[0026] The preparation method o...

Embodiment 2

[0030]10 parts of cement clinker, 20 parts of aluminum hydroxide, 10 parts of quicklime, 5 parts of anhydrous gypsum, 60 parts of special stone slag powder, 5 parts of sodium silicate, 3 parts of sodium fluorosilicate, 3 parts of anionic polyacrylamide, ten parts 1.5 parts of sodium dialkylbenzene sulfonate, 0.3 part of carrageenan concentrated powder;

[0031] The preparation method of curing agent:

[0032] (1) Grind the gravel powder clinker and quicklime until the particle size reaches 200 mesh;

[0033] (2) Grind cement clinker, aluminum hydroxide, anhydrous gypsum, sodium silicate, sodium fluorosilicate, anionic polyacrylamide, sodium dodecylbenzenesulfonate, carrageenan concentrate, etc. according to the above ratio The special gravel powder and quicklime are evenly mixed, mixed and ground until the Blaine specific surface area is 700m 2 / kg, made into a powdery curing agent with a pH value of 8.5 and a particle size of 0.010mm.

Embodiment 3

[0035] 8 parts of cement clinker, 15 parts of aluminum hydroxide, 10 parts of quicklime, 3 parts of anhydrous gypsum, 55 parts of special gravel powder, 10 parts of sodium silicate, 2 parts of sodium fluorosilicate, 1.5 parts of anionic polyacrylamide, ten parts 1.5 parts of sodium dialkylbenzene sulfonate, 0.8 parts of concentrated carrageenan powder;

[0036] The preparation of the special gravel powder described therein is the same as in Example 1.

[0037] The preparation method of curing agent:

[0038] (1) Grind the lime powder and clinker quicklime first until the particle size reaches 150 mesh;

[0039] (2) Grind cement clinker, aluminum hydroxide, anhydrous gypsum, sodium silicate, sodium fluorosilicate, anionic polyacrylamide, sodium dodecylbenzenesulfonate, carrageenan concentrate, etc. according to the above ratio The special gravel powder and quicklime are evenly mixed, mixed and ground until the Blaine specific surface area is 700m 2 / kg, a powdery curing agen...

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Abstract

The invention relates to a curing agent for curing / stabilizing silt (sludge) and soft foundation, and the application thereof. The curing agent comprises 5-10 parts of cement clinker, 10-20 parts of aluminium hydroxide, 10-15 parts of quick lime, 1-5 parts of anhydrous gypsum, 50-60 parts of special rock ballast powder, 5-10 parts of sodium silicate, 0.1-3 parts of sodium fluosilicate, 1-3 parts of anionic polyacrylamide, 0.5-1.5 parts of sodium dodecyl benzene sulfonate and 0.3-1.0 part of carrageenan concentration powder; and the curing agent prepared by the components has the pH value of 8-9 and the particle size of 0.005-0.15mm. 5-10% of curing agent is evenly mixed with silt (sludge), and after treatment, the compression strength reaches 0.2-0.4Mpa and the compression strength of seven days reaches 0.9-1.85Mpa, so that the curing agent has the characteristics of excellent waterproof property, water stability and hydraulicity, and can be widely applied to the curing process for a sea reclamation intertidal zone, the curing process for the sludge generated by riverway dredging, the curing and stabilizing treatment for the sludge generated in a sewage treatment plant, the strengthening for the soil of a road soft foundation layer, and the leakage-proof treatment for a mud layer at the bottom of water in a river and a lake.

Description

technical field [0001] The invention belongs to the technical field of municipal and environmental protection engineering, and relates to a curing agent for solidifying / stabilizing silt (sludge) and soft foundation, more specifically a curing agent for curing and stabilizing silt and soft foundation and its application . Background technique [0002] Due to the constant changes in climate and address movement, under the action of river and coastal tides, fine rocks and soil particles will deposit and settle to form soft soil layers in slow-flow areas such as river channels, seaports, reservoirs, lakes, etc. And industrial pollutants are carried and mixed to form a wet and soft mud layer. This kind of weak soil layer generally has the characteristics of fine particles, high organic matter content, high water content, and is not easy to fall, resulting in low bearing capacity, high porosity, and large settlement after bearing, making it difficult to directly use it as a build...

Claims

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Application Information

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IPC IPC(8): C04B28/26E02D3/12E02B3/02
Inventor 袁敏邵晓龙孙贻超卢学强邓小文蒋黔湘刘雄刘红磊李莉
Owner TIANJIN BLUE SKY ENVIRONMENT POLYTRON TECH INC
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