CN103771741A - Environment-friendly concrete accelerator - Google Patents
Environment-friendly concrete accelerator Download PDFInfo
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- CN103771741A CN103771741A CN201310720434.4A CN201310720434A CN103771741A CN 103771741 A CN103771741 A CN 103771741A CN 201310720434 A CN201310720434 A CN 201310720434A CN 103771741 A CN103771741 A CN 103771741A
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- environment
- accelerator
- concrete accelerator
- friendly concrete
- concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses an environment-friendly concrete accelerator, belonging to cement additives, aiming at providing a concrete accelerator which is less in amount, rapid in coagulation speed and small in later-strength reduction. The environment-friendly concrete accelerator is obtained by mixing the following raw materials by weight percent: 35% of aluminum oxygen chamotte powder, 5% of zinc sulfate and 65% of coal ash. The environment-friendly concrete accelerator has the advantages of less sodium carbonate amount, low cost, small later-strength reduction, low disability and the like, and is an accelerator which is mixed in sprayed concrete when constructions such as mine laneway, railway tunnel, diversion culvert and underground engineering are carried out.
Description
Technical field
The present invention relates to a kind of material of construction, relate in particular to the accelerating chemicals that in a kind of mining construction, sprayed concrete uses, belong to cement additire.
Background technology
Accelerating chemicals is to mix a kind of admixture that makes its rapid setting and harden in concrete, is in the time carrying out the constructions such as mine working, railway tunnel, diversion culvert, underground works, to refer and synthesize indispensable additive in sprayed concrete.Its effect is the hydration and hardening that accelerates cement, forms in a short period of time enough intensity, to guarantee the requirement of special construction.
At present, conventional accelerating chemicals is conventionally formulated by aluminum oxide clinker, calcined alunite and gypsum.Because accelerating chemicals is easily because weathering affects rate of set, therefore in construction, the addition of accelerating chemicals is larger; Not only increase construction cost, and used in a large number accelerating chemicals also can cause late strength of concrete significantly to decline and the defect such as rebound degree height, can not meet construction quality requirement.
Summary of the invention
In order to overcome the defect existing in prior art, the present invention aims to provide that a kind of consumption is few, rate of set is fast, later strength decline circlet guarantor type Hardenfast.
To achieve these goals, technical scheme of the present invention is mixed by the raw material of following weight percent: aluminum oxide clinker powder 35%, zinc sulfate 5%, flyash 65%.
Compared with the prior art, the present invention, owing to having adopted technique scheme, uses the coal ash instead calcined alunite (AL in flyash in conventional formulation
20
3content is higher than AL in calcined alunite
20
3content), thereby the consumption that had therefore both reduced aluminum oxide clinker has reduced the consumption of soda ash, has improved again rate of set; And introduce zinc sulfate, can to make sand-cement slurry condense faster.Presetting period of the present invention is less than 3 minutes, final setting time is less than 5 minutes, 1 day ultimate compression strength is greater than 10Mpa, 28 days strength ratios can reach 90%.The present invention has that rate of set is fast, consumption is few, cost is low, and the advantage such as later strength fall is little, rebound degree is low.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, and concrete steps are as follows:
65 kilograms, 35 kilograms, aluminum oxide clinker powder, 5 kilograms, zinc sulfate, flyash mixed, after pulverizing, cross 200 mesh sieves, dry, guarantee that water ratio is less than 2%.
Claims (1)
1. an environment-friendly type concrete accelerating chemicals, is characterized in that being mixed by the raw material of following weight percent: aluminum oxide clinker powder 35%, zinc sulfate 5%, flyash 65%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720434.4A CN103771741A (en) | 2013-12-24 | 2013-12-24 | Environment-friendly concrete accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310720434.4A CN103771741A (en) | 2013-12-24 | 2013-12-24 | Environment-friendly concrete accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103771741A true CN103771741A (en) | 2014-05-07 |
Family
ID=50564578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310720434.4A Pending CN103771741A (en) | 2013-12-24 | 2013-12-24 | Environment-friendly concrete accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103771741A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130243A (en) * | 2015-08-24 | 2015-12-09 | 湖州华仑助剂科技有限公司 | Concrete accelerator |
| CN108793809A (en) * | 2018-09-12 | 2018-11-13 | 十堰市郧阳区成林工贸有限责任公司 | Concrete accelerator and preparation method thereof |
-
2013
- 2013-12-24 CN CN201310720434.4A patent/CN103771741A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130243A (en) * | 2015-08-24 | 2015-12-09 | 湖州华仑助剂科技有限公司 | Concrete accelerator |
| CN108793809A (en) * | 2018-09-12 | 2018-11-13 | 十堰市郧阳区成林工贸有限责任公司 | Concrete accelerator and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140507 |
|
| WD01 | Invention patent application deemed withdrawn after publication |