CN100341814C - Soft soil hardener preparing from high calcium ash, desulfuration gypsum and cement - Google Patents
Soft soil hardener preparing from high calcium ash, desulfuration gypsum and cement Download PDFInfo
- Publication number
- CN100341814C CN100341814C CNB2005100358883A CN200510035888A CN100341814C CN 100341814 C CN100341814 C CN 100341814C CN B2005100358883 A CNB2005100358883 A CN B2005100358883A CN 200510035888 A CN200510035888 A CN 200510035888A CN 100341814 C CN100341814 C CN 100341814C
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- China
- Prior art keywords
- cement
- soft soil
- calcium ash
- high calcium
- preparing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention discloses a soft soil solidifying agent prepared from high-calcium ash, desulphurization gypsum and cement, which is characterized in that the soft soil solidifying agent is prepared from the components of the proportion by weight: 25 to 40% of high-calcium ash, 10 to 25% of desulphurization gypsum, 0 to 10% of calcium oxide and 40 to 60% of cement. Because the raw materials are from power generating plants, and waste is utilized, the present invention has the advantages of low cost, higher performance-price ratio than that of single use of cement, simple and convenient construction method, and stable and reliable quality.
Description
Technical field
The soft soil curing agent, the particularly soft soil curing agent made from high calcium ash, desulfurated plaster and cement the present invention relates to build, highway and port engineering being used are called for short HGC type soft soil curing agent.
Background technology
The high calcium ash (high lime fly ash) that power plant's burning subbituminous coal produces is because the content of f-CaO is higher, and its hydration rate can cause the problem of the stability of cement concrete slowly than cement, European standard EN450 regulation, must not surpass 1% as the f-CaO content in the flyash of concrete admixture, but the glass microballon that contains a large amount of high CaO content in the high calcium ash is the higher gum material of a kind of activity, and water and CaSO are being arranged
42H
2Under the effect of O exciting agent, it can self-solidifying also can be with some the active substance SiO in the weak soil
2, Al
2O
3C-S-H, C-A-H gelling that chemical reaction generates the hydraulicity take place.
As the byproduct of the desulfurization project of power plant, its fineness height of desulfurated plaster, less than 32mm surpass 60%, pH value is 4-6, and its purity CaSO
42H
2O content is not less than 95%, so it can directly save the polish process of gypsum as adulterant.
The Guangdong Delta of the Pearl River one band weak soil mainly contains: 1. high-moisture high-compressibility mud; 2. high liquid limit clay, its main mineralogical composition are with illite and kaolinite, and be undesirable with the discharging consolidation treatment effect, adopts the deep-cement paddling process to reinforce, and effect is more satisfactory.Therefore now one band is widely used the deep-cement paddling process in delta, Guangdong, but it will consume a large amount of cement, and the cost of investment height is designed to the cement earth pile of 1.2MPa, and cement mixing content is 13%-15%, and more than the 2MPa, then cement mixing content is more than 20%.High calcium ash, the desulfurization waste gypsum is cheap, if utilize them to make solidifying agent, reduces the consumption of cement, reduces construction costs, reduces waste pollution, and very major and immediate significance and economic benefit will be arranged.
Summary of the invention
Purpose of the present invention be intended to overcome the deficiencies in the prior art and provide a kind of cheap, turn waste into wealth, the reliable soft soil curing agent of steady quality.
The object of the present invention is achieved like this:
A kind of soft soil curing agent is characterized in that the weight percent of each component of soft soil curing agent is: high calcium ash 25%-40%, desulfurated plaster 10%-25%, unslaked lime 0%-10%, cement 40%-60%.
A kind of method for making of the soft soil curing agent made from high calcium ash, desulfurated plaster and cement, it is characterized in that wet method is that desulfurated plaster, high calcium ash, cement and water are forced the soft soil curing agent slurry that stirs and make certain water cement ratio in stirrer, the deep layer of whitewashing then stirs construction; Dry method is that high calcium ash, desulfurated plaster and calcium lime powder are mixed by a certain percentage, force to stir, break up the conglomeration of material, eliminate free water in the desulfurated plaster by the hydration reaction of calcium lime powder, make the cement that adds suitable ratio behind the soft soil curing agent admixture specially again deep layer of after forcing to stir, dusting and stir and directly add an amount of cement row deep layer of dusting of forcing to stir again in construction or the fusion process and stir construction at admixture specially.
---the water cement ratio in the described wet method is at 0.4-0.6.
Outstanding progress of the present invention and unusual effect are: raw material is from the power station, and because of being utilizes waste material, and cost is very cheap, cost performance is more much higher with cement than single, and unconfined compression strength is higher, and anti-permeability performance is better, constructional method is simple and convenient, and steady quality is reliable.
Embodiment
Embodiment 1: wet method, this moment, unslaked lime was 0%
Get desulfurated plaster 15kg, high calcium ash 30kg and cement 50kg, add 48kg water, making water cement ratio closely is 0.5 to force to stir into the deep layer of can whitewashing after the even slurry stir construction in stirrer.
Embodiment 2: dry method
Get 5kg unslaked lime and 15kg the desulfurated plaster mix, roll, allow unslaked lime absorb free water in the desulfurated plaster, make admixture specially after forcing to stir, add the 50kg cement flour before the construction, the deep layer of dusting after forcing to stir stirs construction.
Claims (1)
1. a soft soil curing agent is characterized in that the weight percent of each component of soft soil curing agent is: high calcium ash 25%-40%, desulfurated plaster 10%-25%, unslaked lime 0%-10%, cement 40%-60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100358883A CN100341814C (en) | 2005-07-14 | 2005-07-14 | Soft soil hardener preparing from high calcium ash, desulfuration gypsum and cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100358883A CN100341814C (en) | 2005-07-14 | 2005-07-14 | Soft soil hardener preparing from high calcium ash, desulfuration gypsum and cement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1736937A CN1736937A (en) | 2006-02-22 |
| CN100341814C true CN100341814C (en) | 2007-10-10 |
Family
ID=36079924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100358883A Expired - Fee Related CN100341814C (en) | 2005-07-14 | 2005-07-14 | Soft soil hardener preparing from high calcium ash, desulfuration gypsum and cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100341814C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408500C (en) * | 2007-04-25 | 2008-08-06 | 刘文伟 | Clay solidification intensifier for express highway pavement foundation and uses thereof |
| CN101607811B (en) * | 2009-07-16 | 2011-01-05 | 温州大学 | Slurry curing formula |
| CN103086618B (en) * | 2013-01-22 | 2014-07-09 | 浙江大学宁波理工学院 | Construction waste micro-powder solidifying agent for solidifying soil mass |
| CN109896809A (en) * | 2017-12-08 | 2019-06-18 | 大连港口设计研究院有限公司 | Composite curing agent and preparation method thereof |
| CN110510969B (en) * | 2019-08-28 | 2021-05-18 | 华中科技大学 | Environment-friendly curing agent based on industrial waste and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562851A (en) * | 2004-03-16 | 2005-01-12 | 徐尔昌 | Earth cementation agent in use for roadway construction |
-
2005
- 2005-07-14 CN CNB2005100358883A patent/CN100341814C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562851A (en) * | 2004-03-16 | 2005-01-12 | 徐尔昌 | Earth cementation agent in use for roadway construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1736937A (en) | 2006-02-22 |
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