CN104692697A - Expansion agent for concrete - Google Patents
Expansion agent for concrete Download PDFInfo
- Publication number
- CN104692697A CN104692697A CN201510107822.4A CN201510107822A CN104692697A CN 104692697 A CN104692697 A CN 104692697A CN 201510107822 A CN201510107822 A CN 201510107822A CN 104692697 A CN104692697 A CN 104692697A
- Authority
- CN
- China
- Prior art keywords
- parts
- concrete
- cement
- ferrous sulfate
- magnesium slag
- 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.)
- Pending
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an expansion agent for concrete and belongs to the field of chemical additives. The expansion agent is prepared from the following ingredients in parts by weight: 30-35 parts of magnesium slag, 15-20 parts of limestone, 45-50 parts of cement, 1-5 parts of ferrous sulfate, 0.1-0.5 part of azobisformamide, 0.1-0.5 part of sodium tripolyphosphate and 60-70 parts of anhydrous anhydrite. According to the expansion agent for concrete, after the magnesium slag, the limestone, the cement and ferrous sulfate react, alumina gel and a large number of mayenite crystals are produced and then jointly act with azobisformamide and sodium tripolyphosphate in a combined manner, so that the prepared product, namely the expansion agent for concrete, is more suitable for compensating for large-volume hydraulic concrete shrinkage.
Description
Technical field
The invention belongs to chemical additive field, particularly relate to a kind of expansive agent for concrete.
Background technology
Swelling agent is a kind of chemical additive, is added in concrete, and when concrete coagulation hardens, volumetric expansion thereupon, plays compensate for shrinkage and tension reinforcing steel bar produces prestress and abundant filling concrete gap.
At present, the swelling agent be applied in concrete structure mainly contains sulplo-aluminate class, calcium oxide, compound swelling agent etc., but these swelling agents are all unsuitable for compensating the contraction of large volume concrete for hydraulic structure.
Summary of the invention
The invention provides a kind of expansive agent for concrete, this swelling agent can solve the problem that existing swelling agent is unsuitable for compensating the contraction of large volume concrete for hydraulic structure.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:
It adopts following preparation process:
Magnesium slag 30 parts ~ 35 parts, 15 parts ~ 20 parts, Wingdale, cement 45 parts ~ 50 parts, 1 part ~ 5 parts, ferrous sulfate, Cellmic C 121 0.1 part ~ 0.5 part, tripoly phosphate sodium STPP 0.1 part ~ 0.5 part and without water anhydrite 60 parts ~ 70 parts.
In technique scheme, technical scheme is more specifically: magnesium slag 30 parts, 20 parts, Wingdale, cement 45 parts, 5 parts, ferrous sulfate, Cellmic C 121 0.1 part, tripoly phosphate sodium STPP 0.5 part and without water anhydrite 60 parts.
Further, magnesium slag 35 parts, 15 parts, Wingdale, cement 50 parts, 1 part, ferrous sulfate, Cellmic C 121 0.5 part, tripoly phosphate sodium STPP 0.1 part and without water anhydrite 70 parts.
Further, magnesium slag 33 parts, 17 parts, Wingdale, cement 48 parts, 4 parts, ferrous sulfate, Cellmic C 121 0.4 part, tripoly phosphate sodium STPP 0.4 part and without water anhydrite 65 parts.
Further, in described magnesium dreg chemistry composition, magnesian content is greater than 30%.
Owing to adopting technique scheme, the beneficial effect that the present invention obtains is:
1. the present invention adopts magnesium slag to replace part of cement, not only effectively reduces its production cost, magnesium slag also can be made to turn waste into wealth, be fully utilized.
2. the present invention generates aluminium glue and a large amount of mayenite crystal after mainly utilizing magnesium slag, Wingdale, cement and ferrous sulfate to react, again with Cellmic C 121, the common compound action of tripoly phosphate sodium STPP, thus the product cement expansive material obtained is made to be more suitable for shrinking for compensating large volume concrete for hydraulic structure.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, and protection scope of the present invention is not only confined to following examples.
Embodiment 1
This expansive agent for concrete is made up of following component: magnesium slag 3.0kg, Wingdale 2.0kg, cement 4.5kg, ferrous sulfate 0.5kg, Cellmic C 121 0.01kg, tripoly phosphate sodium STPP 0.05kg and without water anhydrite 6.0kg; Wherein, in magnesium dreg chemistry composition, magnesian content is greater than 30%.
Its preparation method is: by magnesium slag in the component of above-mentioned weight, Wingdale, and ball milling pulverized by cement, crosses 80 microns of square hole sieves, then carries out mixing, stirring with remaining component, dries, and calcines 1 hour at 850 DEG C, and cooling is obtained.
Compared with similar products, swelling agent maintenance 7 days limited expansion rates in water that the present embodiment obtains are 0.12%, and in water, maintenance 28 days limited expansion rates are 0.02%.
Embodiment 2
This expansive agent for concrete is made up of following component: magnesium slag 3.5kg, Wingdale 1.5kg, cement 5.0kg, ferrous sulfate 0.1kg, Cellmic C 121 0.05kg, tripoly phosphate sodium STPP 0.01kg and without water anhydrite 7.0kg; Wherein, in magnesium dreg chemistry composition, magnesian content is greater than 30%.
Its preparation method is: by magnesium slag in the component of above-mentioned weight, Wingdale, and ball milling pulverized by cement, crosses 80 microns of square hole sieves, then carries out mixing, stirring with remaining component, dries, and calcines 0.5 hour at 1200 DEG C, and cooling is obtained.
Compared with similar products, swelling agent maintenance 7 days limited expansion rates in water that the present embodiment obtains are 0.10%, and in water, maintenance 28 days limited expansion rates are 0.024%.
Embodiment 3
This expansive agent for concrete is made up of following component: magnesium slag 3.3kg, Wingdale 1.7kg, cement 4.8kg, ferrous sulfate 0.4kg, Cellmic C 121 0.04kg, tripoly phosphate sodium STPP 0.04kg and without water anhydrite 6.5kg; Wherein, in magnesium dreg chemistry composition, magnesian content is greater than 30%.
Its preparation method is: by magnesium slag in the component of above-mentioned weight, Wingdale, and ball milling pulverized by cement, crosses 80 microns of square hole sieves, then carries out mixing, stirring with remaining component, dries, and calcines 0.5 hour at 1100 DEG C, and cooling is obtained.
Compared with similar products, swelling agent maintenance 7 days limited expansion rates in water that the present embodiment obtains are 0.11%, and in water, maintenance 28 days limited expansion rates are 0.022%.
Claims (5)
1. an expansive agent for concrete, is characterized in that being made up of the component of following weight part:
Magnesium slag 30 parts ~ 35 parts, 15 parts ~ 20 parts, Wingdale, cement 45 parts ~ 50 parts, 1 part ~ 5 parts, ferrous sulfate, Cellmic C 121 0.1 part ~ 0.5 part, tripoly phosphate sodium STPP 0.1 part ~ 0.5 part and without water anhydrite 60 parts ~ 70 parts.
2. expansive agent for concrete according to claim 1, is characterized in that: magnesium slag 30 parts, 20 parts, Wingdale, cement 45 parts, 5 parts, ferrous sulfate, Cellmic C 121 0.1 part, tripoly phosphate sodium STPP 0.5 part and without water anhydrite 60 parts.
3. expansive agent for concrete according to claim 1, is characterized in that: magnesium slag 35 parts, 15 parts, Wingdale, cement 50 parts, 1 part, ferrous sulfate, Cellmic C 121 0.5 part, tripoly phosphate sodium STPP 0.1 part and without water anhydrite 70 parts.
4. expansive agent for concrete according to claim 1, is characterized in that: magnesium slag 33 parts, 17 parts, Wingdale, cement 48 parts, 4 parts, ferrous sulfate, Cellmic C 121 0.4 part, tripoly phosphate sodium STPP 0.4 part and without water anhydrite 65 parts.
5. the expansive agent for concrete according to claim 1 or 2 or 3 or 4, is characterized in that: in described magnesium dreg chemistry composition, magnesian content is greater than 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107822.4A CN104692697A (en) | 2015-03-12 | 2015-03-12 | Expansion agent for concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510107822.4A CN104692697A (en) | 2015-03-12 | 2015-03-12 | Expansion agent for concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104692697A true CN104692697A (en) | 2015-06-10 |
Family
ID=53340302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510107822.4A Pending CN104692697A (en) | 2015-03-12 | 2015-03-12 | Expansion agent for concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104692697A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347373B1 (en) * | 1970-03-07 | 1978-12-20 | ||
| CN101250035A (en) * | 2008-03-21 | 2008-08-27 | 西安建筑科技大学 | Expansive material for cement or concrete and preparation thereof |
| CN102219430A (en) * | 2011-04-08 | 2011-10-19 | 衡阳市山王建材实业有限责任公司 | High performance concrete inorganic environmental waterproof expanding agent and preparation method thereof |
| CN102464463A (en) * | 2010-11-09 | 2012-05-23 | 中冶武汉冶金建筑研究院有限公司 | Compound high-performance expanding agent for cement-based material |
-
2015
- 2015-03-12 CN CN201510107822.4A patent/CN104692697A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5347373B1 (en) * | 1970-03-07 | 1978-12-20 | ||
| CN101250035A (en) * | 2008-03-21 | 2008-08-27 | 西安建筑科技大学 | Expansive material for cement or concrete and preparation thereof |
| CN102464463A (en) * | 2010-11-09 | 2012-05-23 | 中冶武汉冶金建筑研究院有限公司 | Compound high-performance expanding agent for cement-based material |
| CN102219430A (en) * | 2011-04-08 | 2011-10-19 | 衡阳市山王建材实业有限责任公司 | High performance concrete inorganic environmental waterproof expanding agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107200497A (en) | A kind of chlorine-free alkali-free liquid accelerating agent and preparation method thereof | |
| CN101250035B (en) | Swelling material for cement or concrete and preparation thereof | |
| CN102173630B (en) | High-performance chlorine-free alkali-free liquid accelerating agent | |
| WO2010024260A1 (en) | Sulfate-resisting ground granulated blast furnce slag, sulfate-resisting cement and process for production of same | |
| CN104370489B (en) | A kind of alkali-free liquid accelerator and preparation method thereof | |
| JP5019912B2 (en) | Sulfate resistant cement | |
| CN101781099A (en) | Special retarder of ready-mixed mortar | |
| CN109678381B (en) | High-corrosion-resistance portland cement early strength agent and preparation method thereof | |
| CN106220016B (en) | Nickel slag base concrete swelling agent, preparation process and concrete | |
| CN105347714A (en) | Modified phosphogypsum cement retarder | |
| CN103241973A (en) | Preparation method for calcium aluminate concrete accelerator | |
| CN104788031A (en) | Aluminate cement and preparation method thereof | |
| CN104692697A (en) | Expansion agent for concrete | |
| CN104692698A (en) | Expansion agent for concrete | |
| CN105174883A (en) | Water-retention and waste-curing curing agent | |
| CN104310841A (en) | Concrete waterproofing agent | |
| CN103979846A (en) | Anticorrosive concrete and preparation method thereof | |
| CN105293966A (en) | Sulfoaluminate cement mixing admixture | |
| CN106186776B (en) | A kind of composite mineral powder and its preparation method and application | |
| CN106542796B (en) | The preparation process of small-sized weather monitoring tower concrete material | |
| CN104724971A (en) | Preparation method of alkali-free liquid accelerator for shotcrete | |
| CN108314349A (en) | A kind of accelerator suitable for sulphate aluminium cement | |
| CN102863163A (en) | Method for preparing acid-proof cement with argil product wastes to serve as main raw material | |
| CN102092980A (en) | Negative temperature hardening agent for cement | |
| CN103241971A (en) | Preparation method for calcium sulphoaluminate silicate concrete accelerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150610 |
|
| RJ01 | Rejection of invention patent application after publication |