CN1095049A - Multifunctional portland fly-ash cement - Google Patents
Multifunctional portland fly-ash cement Download PDFInfo
- Publication number
- CN1095049A CN1095049A CN93105528A CN93105528A CN1095049A CN 1095049 A CN1095049 A CN 1095049A CN 93105528 A CN93105528 A CN 93105528A CN 93105528 A CN93105528 A CN 93105528A CN 1095049 A CN1095049 A CN 1095049A
- Authority
- CN
- China
- Prior art keywords
- cement
- multifunctional
- portland
- ash
- flyash
- 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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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0008—Materials specified by a shape not covered by C04B20/0016 - C04B20/0056, e.g. nanotubes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Road Paving Structures (AREA)
Abstract
A kind of multifunctional portland fly-ash cement, the content of its Portland clinker, flyash, gypsum and national existing standard content are basic identical.Its grog particle shape is similar to equilateral microscler shape block, and 2 μ-40 μ accounts for more than 80%, and powder coal ash glass-microballons is not ground, and particle diameter is less than 40 μ.Cement cost of the present invention is low, and is energy-conservation, and performance but improves greatly than silicate cement.
Description
The invention belongs to material of construction, particularly relate to a kind of multifunctional portland fly-ash cement.As everyone knows, silicate cement has the raw material abundance, and cost is low, easy construction, and good endurance, advantages such as easy care are widely used in the every field of national economy.Often pile up like a mountain for the accessory substance flyash of large-size thermal power plant, both land occupations, and contaminate environment again, the scientific worker of various countries carries out the applied research of flyash for a long time.Flyash and Portland clinker mixing are made into Portland fly ash cement, according to national standard, wherein contain silicate cement grog 50-70%, contain flyash 20-40%, contain gypsum 3-5%.General Portland fly ash cement and general silicate cement all can not satisfy the performance requriements of special engineering with cement, for example to advanced road or airfield runway cement, the cement grog grinding that just needs to adopt extraordinary batching to fire becomes wear resistance good, contract with dry rate is low, the road cement that folding strength is high; For harbour, harbour, bridges and culverts, underwater engineering, as the cement of usefulness such as dam, harbour, river seashore bank protection, it is impervious good just need to become with the cement grog grinding that special batching is fired, and frost resistance is strong, corrosion resistant port cement.Conventional Portland fly ash cement is compared with silicate cement, and early strength is low, and anti-freezing property is relatively poor, shortcomings such as easy segregation, and its use is more restricted.
It is lower than silicate cement to the objective of the invention is to make cost, and performance can satisfy the high quality cement that road harbour special engineering is used than silicate cement height, i.e. multifunctional portland fly-ash cement.
Technical scheme of the present invention is: multifunctional portland fly-ash cement, contain silicate cement grog 48-78% by weight, contain flyash 20-50%, contain terra alba 2-6%, feature of the present invention is: the block of the approximate equilateral microscler shape of the particle shape of Portland clinker, its particle diameter 2 μ-40 μ accounts for more than 80%, and powder coal ash glass-microballons is not by ground more than 80%, and particle diameter is less than 40 μ.
Further specify its technical scheme below by embodiment, the Portland clinker that uses in the multifunctional silicone acid salt cement of present embodiment is the conventional formulation rotary kiln clinker, and 28 days ultimate compression strength is 60MPa, and folding strength is 8.7MPa; The gypsum that uses is to meet the general gypsum of cement with standard; The flyash that uses is the flyash of coal-burning power plant, except that meeting the requirement of national standard to flyash in the cement, particularly passes through sorting, and particle diameter is less than 30 μ.By weight 67 parts of Portland clinkers, 30 parts in flyash, 3 parts in gypsum.Put into the centrifugal collision powder grinding machine and carry out grinding, make a kind of high performance multifunctional portland fly-ash cement.
For the ease of understanding positive effect of the present invention, list multifunctional portland fly-ash cement and GB GB1344-85 in the subordinate list, the portland cement all technical comparing data of 625R label.
The multifunctional portland fly-ash cement specific area is little as can be seen from the table, tails at 0.04mm under 2% the fineness condition, and specific area only has 3800cm2The general pulverizing cement of/g(is under equal fineness condition, and specific area reaches 4500cm2/ g), this illustrates that cement of the present invention is less less than the particle of 2 μ, grain shape is near equilateral microscler shape block.
(2) the longterm strength increase rate is big, and 1 year intensity 107.6MPa increases more than 61% than 28 days 66.2MPa, the longterm strength of this explanation cement of the present invention at cement than under the slice spare, also big than general strength of cement increase rate.
(3) corrosion resistance is good, and 28 days coefficients against corrosion of cement of the present invention reach 1.06, and is also higher by 32.5% to the requirement (K28=0.8) of sulphate-resistant cement than national standard, illustrates that cement of the present invention is the fine corrosion resistant concrete.
(4) wear resistance is good, and cement abrasion loss of the present invention is 0.48kg/m
2, only be national standard road water quality standard 3.6kg/m
21/7.5, this is an important breakthrough to high-grade highway and large-scale airfield runway cement.
(5) contract with dry rate is little, and 28 days contract with dry rate of cement of the present invention only are 5/10000ths, and this excellent properties can make road and airfield runway construction need not consider shrinkage joint.This is to improving road life, smoothness when improving automobile, aircraft taxi, and reducing casualty ratio of accidents has significant role.
(6) impervious good, cement impervious property of the present invention is greater than 2.0MPa, and this performance can satisfy the requirement of any underground waterproof engineering.
(7) good fluidity, cement flows degree 182mm of the present invention can satisfy pump cement, does not have the requirement of the cement that vibrates, and for improving construction speed, the reduction of erection time is significant.
(8) frost resistance is strong, and cement of the present invention improves 3 times than the anti-freezing property of the similar cement of national standard.
The multifunctional portland fly-ash cement cost is low more about 25% than general silicate cement, and is energy-conservation more than 20%, utilizes plant residue flyash, reduce environmental pollution, save an ash occupation of land, every technical performance index improves greatly simultaneously, has remarkable economic efficiency and social benefit.
Claims (1)
1, a kind of multifunctional portland fly-ash cement, contain Portland clinker 48-78% by weight, contain flyash 20-50%, contain gypsum 2-6%, feature of the present invention is: the block of the approximate equilateral microscler shape of the particle shape of Portland clinker, particle diameter 2 μ-40 μ accounts for more than 80%, and powder coal ash glass-microballons is not by ground more than 80%, and particle diameter is less than 40 μ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93105528A CN1095049A (en) | 1993-05-11 | 1993-05-11 | Multifunctional portland fly-ash cement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93105528A CN1095049A (en) | 1993-05-11 | 1993-05-11 | Multifunctional portland fly-ash cement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1095049A true CN1095049A (en) | 1994-11-16 |
Family
ID=4985772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93105528A Pending CN1095049A (en) | 1993-05-11 | 1993-05-11 | Multifunctional portland fly-ash cement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1095049A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098225C (en) * | 1998-12-21 | 2003-01-08 | 蒋元海 | Manufacture method for tubular pile cement |
| CN102092973A (en) * | 2010-12-17 | 2011-06-15 | 南京工业大学 | Fly ash cement and preparation method thereof |
-
1993
- 1993-05-11 CN CN93105528A patent/CN1095049A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1098225C (en) * | 1998-12-21 | 2003-01-08 | 蒋元海 | Manufacture method for tubular pile cement |
| CN102092973A (en) * | 2010-12-17 | 2011-06-15 | 南京工业大学 | Fly ash cement and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |