CN103373827A - Cement-based material - Google Patents
Cement-based material Download PDFInfo
- Publication number
- CN103373827A CN103373827A CN2012101110298A CN201210111029A CN103373827A CN 103373827 A CN103373827 A CN 103373827A CN 2012101110298 A CN2012101110298 A CN 2012101110298A CN 201210111029 A CN201210111029 A CN 201210111029A CN 103373827 A CN103373827 A CN 103373827A
- Authority
- CN
- China
- Prior art keywords
- cement
- percent
- based material
- fly ash
- 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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention relates to a building material, and in particular relates to a cement-based material. Cement which meets a technical requirement on road base construction can be produced by using 55 to 60 percent of fly ash as a main raw material, and adding 20 percent of cement clinker, 10 to 15 percent of slag and plaster and other components. The newly developed cement is large in fly ash content; meanwhile, an expansion element is introduced, so that the hydration heat of the cement is lower than that of low-heat fly ash cement of the same age; and the coefficient of linear expansion reaches over 0.1 percent within 7 days and reaches about 0.2 percent within 28 days, so that the cement has the characteristics of low hydration heat and micro expansion.
Description
Technical field
The present invention relates to material of construction, is exactly the highway road surface cement-based material specifically.
Background technology
There are some special performance requriementss in Road Design and construction road pavement basic unit with cement.Yet in existing highway construction process of construction, sub-surface generally adopts Portland cement, and the result serves adverse consequences, especially desciccation crack problem to construction quality and highway band in work-ing life.For highway construction required, the general contract with dry rate of existing cement was larger, and initial set, final setting time are partially short, are the principal elements that causes the sub-surface crack.
Summary of the invention
The problem in crack in use appears in the present invention easily in order to solve existing cement, existing cement type following technical measures have been taked: the volcanic ash characteristic of utilizing flyash, take flyash as main raw material, mingle a small amount of grog, that intensity, pressure-proof and snap-resistent reach the requirement that the sub-surface design is used, reduce hydration heat, reduce drying shrinkage.
Mix mixing materials such as being no more than 15% slag, Wingdale, these are had the Material cladding of different qualities, utilize their complex effect to improve the early strength of goods.
Adopt the High Quality Clinker of certain proportion scheme, under the prerequisite that does not reduce the cement early strength of newly developing, adjust initial set, final setting time, slow down hydration heat speed, introduce the unit of expanding, improve the growing amount of ettringite in the hydrated product, make this material have the polar expansion characteristic.
Newly the cement, flyash volume of development is large, introduced simultaneously the unit of expanding, made its hydration heat also lower than the low-heat pulverized fuel ash cement with the length of time, linear expansivity reached more than 0.1% in 7 days, about 0.2%, made this cement have the characteristics of low hydration heat and microdilatancy in 28 days.Owing to use in a large number industrial residues, therefore produce the industry policy of this cementitious composite China, make the products production cost lower than Portland cement, economic benefit is obvious.
Embodiment
A kind of cement-based material, the flyash take 55% ~ 60% is main raw material, the cement clinker of admixture 20%, 10% ~ 15% slag, gypsum and other components can be produced the cement that satisfies the road base layer construction technical requirements.
In preparation process, according to the characteristics of various material grindabilities, in conjunction with the contribution to intensity in hydration process of various materials, adopt different grinding modes, make various materials reach respectively rational fineness and grain composition.Wherein, slag powders and grog all adopt the preparation method of secondary grinding, and the ground slag powder specific surface area is not less than 350m
2/ kg, levigate agglomerate ratio surface-area is 330m
2About/kg.
Claims (2)
1. cement-based material, it is characterized in that: the flyash take 55% ~ 60% is main raw material, the cement clinker of admixture 20%, 10% ~ 15% slag, gypsum, all the other are swelling agent.
2. a kind of cement-based material according to claim 1, it is characterized in that: in preparation process, slag powders and grog all adopt the preparation method of secondary grinding, and the ground slag powder specific surface area is not less than 350m
2/ kg, levigate agglomerate ratio surface-area is 330m
2/ kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101110298A CN103373827A (en) | 2012-04-17 | 2012-04-17 | Cement-based material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101110298A CN103373827A (en) | 2012-04-17 | 2012-04-17 | Cement-based material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103373827A true CN103373827A (en) | 2013-10-30 |
Family
ID=49459723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101110298A Pending CN103373827A (en) | 2012-04-17 | 2012-04-17 | Cement-based material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103373827A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771786A (en) * | 2014-01-23 | 2014-05-07 | 上海雅乐市政实业有限公司 | Rapidly hardening mixture for road base and using method thereof |
| CN105314936A (en) * | 2015-10-29 | 2016-02-10 | 廊坊荣盛混凝土有限公司 | Application of fly ash composite slag powder to concrete |
| CN106145721A (en) * | 2016-08-22 | 2016-11-23 | 安徽省高迪环保股份有限公司 | A kind of pulverized fuel ash cement processing method |
| CN111978063A (en) * | 2020-08-29 | 2020-11-24 | 贵州创兴盛科技有限公司 | Underground goaf filling roof-contacting expanding agent |
-
2012
- 2012-04-17 CN CN2012101110298A patent/CN103373827A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771786A (en) * | 2014-01-23 | 2014-05-07 | 上海雅乐市政实业有限公司 | Rapidly hardening mixture for road base and using method thereof |
| CN103771786B (en) * | 2014-01-23 | 2015-08-19 | 上海雅乐市政实业有限公司 | A kind of fast rigid roadbase compound and using method thereof |
| CN105314936A (en) * | 2015-10-29 | 2016-02-10 | 廊坊荣盛混凝土有限公司 | Application of fly ash composite slag powder to concrete |
| CN106145721A (en) * | 2016-08-22 | 2016-11-23 | 安徽省高迪环保股份有限公司 | A kind of pulverized fuel ash cement processing method |
| CN111978063A (en) * | 2020-08-29 | 2020-11-24 | 贵州创兴盛科技有限公司 | Underground goaf filling roof-contacting expanding agent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131030 |