CN1332906C - Method for preparing expansion agent for composite type concrete - Google Patents
Method for preparing expansion agent for composite type concrete Download PDFInfo
- Publication number
- CN1332906C CN1332906C CNB2005100314480A CN200510031448A CN1332906C CN 1332906 C CN1332906 C CN 1332906C CN B2005100314480 A CNB2005100314480 A CN B2005100314480A CN 200510031448 A CN200510031448 A CN 200510031448A CN 1332906 C CN1332906 C CN 1332906C
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- CN
- China
- Prior art keywords
- expansion agent
- concrete
- anhydrite
- composite type
- type concrete
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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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a method for preparing a composite concrete expansion agent, which belongs to the field of concrete expansion agents. In the present invention, the expansion agent is made from dry fluorine gypsum of waste slag produced in the process of producing salt fluoride with a dry method, fly ashes and iron powder which are used as raw materials by adding 2 to 3 additives through mixing, milling and homogenizing. The expansion agent is not in need of calcining but in need of milling and has the advantages of simple production processes, greatly saved energy sources, low cost and high economic benefits, and waste is changed into valuables. Compared with similar products, the expansion agent has larger market competitive power, and the environmental pollution is reduced simultaneously so as to provide favorable guarantees for the sustainable development of salt fluoride production with the dry method. The expansion agent has the characteristics of low basicity, no chlorine, less addition amount, etc., and can be widely used for various types of concrete engineering.
Description
Technical field
The present invention relates to a kind of method for preparing expansion agent for composite type concrete, particularly a kind of method for preparing expansion agent for composite type concrete that utilizes industrial residue anhydrite and flyash and iron powder for raw material.
Background technology
Expansion agent for composite type concrete is a kind of concrete admixture with great market capacity and development prospect, its compatibility the performance of swelling agent, water reducer.It has the reduction hydration heat of concrete, improves concrete strength and impervious ability, characteristics such as compensating concrete contraction.Be widely used in underwater engineering, flood control project and all kinds of large-sized concrete construction work.
At present, domestic existing concrete swelling agent generally carries out pyroprocessing with pure raw material to be made, the cost height, and energy consumption is big, and great majority are high-alkali cement expansive materials, and addition content is big, and is chloride, the production technique relative complex;
Also utilize fluorgypsum, flyash to make cement expansive material for raw material, but performance is single, there is sizable gap in the cement expansive material that has complex function with international leading product;
The domestic waste residue fluorgypsum of production fluoride salt and the flyash of heat power plant's discharge of once utilizing is the raw material production cement expansive material, but this swelling agent performance is single, its performance is not done further adjustment and improvement, so its economy is relatively poor.
In the fluoride salt production process, wet method fluoride salt production technique progressively is eliminated at present, and the dry production fluoride salt has become the main flow that fluoride salt is produced, and under the pressure of environmental improvement, the development and use of a large amount of anhydrites that produced in its technology are extremely urgent.
Summary of the invention
The object of the present invention is to provide a kind of method of utilizing the waste residue anhydrite of discharging in the dry fluorination process salt production process and flyash for the raw material production expansion agent for composite type concrete.
The objective of the invention is to realize: a kind of method for preparing expansion agent for composite type concrete by following approach, anhydrite, flyash and three kinds of raw materials of iron powder are respectively anhydrite by its proportioning: flyash: iron powder equals 1: 0.76: 0.04, residual acid H in anhydrite
2SO
4The content of HF is 1.8% o'clock, adds admixture xylogen calcium and NAPTHALENE FLAKES. (INDUSTRIAL GRADE, and the proportioning of xylogen calcium and anhydrite is 0.001: 1, and the proportioning of NAPTHALENE FLAKES. (INDUSTRIAL GRADE and anhydrite is 0.0006: 1, through mix and stir, grinding and homogenizing form finished product.
Method for preparing expansion agent for composite type concrete of the present invention need not calcined, and only needs grinding, and production technique is simple, can save a large amount of energy; Turn waste into wealth, with low cost, the economic benefit height compares with like product, has more the market competitiveness; Simultaneously, reduce environmental pollution, the sustainable development for dry fluorination process salt is produced provides favourable guarantee, has also opened up a new way for the comprehensive utilization of fluorgypsum.It is few that this product has low basicity, no chlorine, addition content, even during volume k=6%, also can meet or exceed the requirement of K=12% in the JC476-2001 swelling agent industry standard, and the requirement of JC473-2001 water reducer industry.It can be widely used in the various dissimilar concrete workses, as mass concrete, water-proof concrete, road concrete, high-strength prestressed concrete and Equipment Foundations grouting from close concrete etc.
Embodiment
Cement expansive material preparation method of the present invention is with anhydrite CaSO
4, three grades of flyash and iron powder (Fe
2O
3) be raw material, its proportioning is by weight percentage: anhydrite 70-50%, three grades of flyash 50-25%, iron powder 2-5% are mete-wand with the amount of anhydrite, add the admixture of 0.1-1.0%, through mix and stir, grinding and homogenizing form finished product;
The interpolation kind of admixture is according to residual acid H in the anhydrite
2SO
4The content of HF decides, as residual acid H
2SO
4HF is greater than selecting NAPTHALENE FLAKES. (INDUSTRIAL GRADE C at 1.5% o'clock for use
10H
8With xylogen calcium; As residual acid H
2SO
4HF is less than selecting NAPTHALENE FLAKES. (INDUSTRIAL GRADE C at 1.5% o'clock for use
10H
8, xylogen calcium and ten disulfo calcium sulfate.Select for use suitable admixture can reduce the influence of harmful element, reduce to below 2% as content of magnesia, chloride ion content is reduced to below 0.01%.
Anhydrite is the deslagging in the dry fluorination process salt production process, its main component is anhydrous indissoluble type calcium sulfate, and content is more than or equal to 95%, and its acid content is at 0.2-2.5%, can directly utilize without the neutral anhydrite, can save former use lime neutral expense and operation like this.Aquation and mechanism of intumescence and water reducer diminishing mechanism according to swelling agent, when guaranteeing that hydrated product is ettringite (calcium sulphoaluminate), again according to the acid content of anhydrite, select two kinds or three kinds of admixtures for use, reach the purpose of hierarchy of control alkali content, thereby make low alkali expansion agent for composite type concrete.Product meets JC476-2001 swelling agent industry standard and the requirement of JC473-2001 water reducer industry standard.
Embodiment 1, when the acid content residual acid content of anhydrite is 1.2%, takes by weighing 50 kilograms of anhydrites, 40 kilograms of first level flour coal ash, NAPTHALENE FLAKES. (INDUSTRIAL GRADE C
10H
8, each 0.1 kilogram of xylogen calcium and three kinds of admixture of ten disulfo calcium sulfate.With the material that measures, through repeatedly mixing and stirring, grinding is 0.08 millimeter to fineness and tails over less than 10% again, and after homogenizing forms product.
Embodiment 2, when the acid content of anhydrite is 1.8%, take by weighing 50 kilograms of anhydrites, 38 kilograms in three grades of flyash, 2 kilograms of iron powders, 0.05 kilogram of xylogen calcium, 0.03 kilogram of NAPTHALENE FLAKES. (INDUSTRIAL GRADE.With the material that measures, through repeatedly mixing and stirring, grinding is 0.08 millimeter to fineness and tails over less than 10% again, and after homogenizing forms product.
Claims (1)
1. a method for preparing expansion agent for composite type concrete is characterized in that: residual acid H
2SO
4The content of HF is that anhydrite, flyash and three kinds of raw materials of iron powder of 1.8% are respectively anhydrite by its proportioning: three grades of flyash: iron powder equals 1: 0.76: 0.04, add admixture xylogen calcium and NAPTHALENE FLAKES. (INDUSTRIAL GRADE, the proportioning of xylogen calcium and anhydrite is 0.001: 1, the proportioning of NAPTHALENE FLAKES. (INDUSTRIAL GRADE and anhydrite is 0.0006: 1, through mix and stir, grinding and homogenizing form finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100314480A CN1332906C (en) | 2005-04-15 | 2005-04-15 | Method for preparing expansion agent for composite type concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100314480A CN1332906C (en) | 2005-04-15 | 2005-04-15 | Method for preparing expansion agent for composite type concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1686911A CN1686911A (en) | 2005-10-26 |
| CN1332906C true CN1332906C (en) | 2007-08-22 |
Family
ID=35304953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100314480A Expired - Fee Related CN1332906C (en) | 2005-04-15 | 2005-04-15 | Method for preparing expansion agent for composite type concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1332906C (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051161A (en) * | 1989-10-21 | 1991-05-08 | 一冶特综新型建材厂 | Calcium aluminosulfated type cement swelling agent and technology |
| CN1125701A (en) * | 1994-12-31 | 1996-07-03 | 金树青 | Series paper alkali alumite plumping agent |
| CN1139079A (en) * | 1995-06-28 | 1997-01-01 | 汪澜 | Aluminoferrite plumping agent |
| CN1406901A (en) * | 2001-08-29 | 2003-04-02 | 湖南湘铝有限责任公司 | Concrete expanding agent and its preparation |
| CN1431161A (en) * | 2002-12-31 | 2003-07-23 | 武汉理工大学 | Technique and method for preparing mineral additive of multi-function concrete |
| CN1566016A (en) * | 2003-07-07 | 2005-01-19 | 郭金华 | Serial cement expansive material with low alkali content, high swelling limit and low doping quantity |
| CN1583645A (en) * | 2004-06-15 | 2005-02-23 | 季元升 | Concrete sweller |
| CN1603272A (en) * | 2004-09-27 | 2005-04-06 | 武汉理工大学 | Cement and concrete expander prepared by using multiple industrial residues |
-
2005
- 2005-04-15 CN CNB2005100314480A patent/CN1332906C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1051161A (en) * | 1989-10-21 | 1991-05-08 | 一冶特综新型建材厂 | Calcium aluminosulfated type cement swelling agent and technology |
| CN1125701A (en) * | 1994-12-31 | 1996-07-03 | 金树青 | Series paper alkali alumite plumping agent |
| CN1139079A (en) * | 1995-06-28 | 1997-01-01 | 汪澜 | Aluminoferrite plumping agent |
| CN1406901A (en) * | 2001-08-29 | 2003-04-02 | 湖南湘铝有限责任公司 | Concrete expanding agent and its preparation |
| CN1431161A (en) * | 2002-12-31 | 2003-07-23 | 武汉理工大学 | Technique and method for preparing mineral additive of multi-function concrete |
| CN1566016A (en) * | 2003-07-07 | 2005-01-19 | 郭金华 | Serial cement expansive material with low alkali content, high swelling limit and low doping quantity |
| CN1583645A (en) * | 2004-06-15 | 2005-02-23 | 季元升 | Concrete sweller |
| CN1603272A (en) * | 2004-09-27 | 2005-04-06 | 武汉理工大学 | Cement and concrete expander prepared by using multiple industrial residues |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1686911A (en) | 2005-10-26 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20110415 |