CN1271697A - Ultra-fine mineral powder for high-performance concrete - Google Patents
Ultra-fine mineral powder for high-performance concrete Download PDFInfo
- Publication number
- CN1271697A CN1271697A CN00109125A CN00109125A CN1271697A CN 1271697 A CN1271697 A CN 1271697A CN 00109125 A CN00109125 A CN 00109125A CN 00109125 A CN00109125 A CN 00109125A CN 1271697 A CN1271697 A CN 1271697A
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- China
- Prior art keywords
- ultra
- performance concrete
- concrete
- mineral powder
- fine
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0042—Powdery mixtures
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
An ultra-fine mineral powder for high-property concrete is prepared from slags, zeolite, flyash, feldspar and caustic lime through proportioning, ultra-fine grinding, mixing and homogenization. Its advantages are low cost, convenient application, high stability and widely available raw materials.
Description
The present invention relates to a kind of ultra-fine mineral powder for high-performance concrete, relate to specifically a kind of formulated by multi mineral, a kind of ultra-fine mineral powder for high-performance concrete that the enhancing amplitude is big.Belong to the novel material of preparing high performance concrete.
At present, along with the progress of Building technology and buildings to high stratification, big load, large span, thin-walled property and require to prolong the buildings needs in work-ing life, concrete technology is in from traditional concrete and changes to high performance concrete both at home and abroad.Mineral superfine powder is the indispensable a kind of novel material of preparation high performance concrete.The material that is used at present to prepare high performance concrete at home generally all is to adopt single mineral superfine powder, promptly adopts ultrafine slag powder or superfined flyash or zeolite powder etc., utilizes wherein any one mineral superfine powder preparation high performance concrete.The high performance concrete that the single mineral superfine powder of existing usefulness makes has its unfavorable aspect, as: what have is little to 28 days enhancing amplitude of concrete, promptly less than 20%; The quantity of the replacement cement that has is few, promptly less than 30%; The alkalinity that has is higher, is unfavorable for suppressing alkali-aggregate reaction; The high performance concrete that makes that has does not reach the requirement of high-durability etc.So the existing mineral superfine powder that is used to prepare high performance concrete needs further improvement, to improve the yield and quality of high performance concrete.
The object of the present invention is to provide a kind of formulatedly by multi mineral, it is big that concrete is strengthened amplitude, a kind of ultra-fine mineral powder for high-performance concrete of good endurance.
The object of the present invention is achieved like this: it is made up of slag, zeolite rock, flyash, stone green for a long time, unslaked lime, through weigh, ultra-fine mill, mixing, homogenizing form, and it is characterized in that it is a kind of ultra-fine mineral powder for high-performance concrete by the following weight percentages preparation:
Slag 30-35% zeolite rock 20-25%
Flyash 35-40% stone 5-10% green for a long time
Unslaked lime 0-7%.
With the starting material of selecting, adopt ultra-fine mill, can grind out high-quality a kind of ultra-fine mineral powder for high-performance concrete, have another name called ultra-fine mineral powder for high-performance concrete for DBF.
A kind of ultra-fine mineral powder for high-performance concrete of the present invention, its feature also is:
1. specific surface area: 400m-800m/Kg
2. water demand ratio:＜95%
3. 28 days glue sand compressive strength rates:＞110%.
The present invention compared with prior art, its low price, easy to use, inexpensive, stability is strong, and the starting material source is wide, select the local above-mentioned raw materials that is produced to carry out reasonably preferred collocation, it can be learnt from other's strong points to offset one's weaknesses on performance, can excite mutually again, given play to the effect of high level, high benefit.
Further specify the present invention below in conjunction with embodiment
Raw material of the present invention can be made up of above-mentioned 5 kinds or 4 kinds or 3 kinds of raw materials, and the embodiment of the invention 1 is made up of 5 kinds of raw materials, and the embodiment of the invention 2 is made up of 4 kinds of raw materials, and they all can give play to the effect of high level, high benefit, repeat no more here.
Embodiment 1
1. investigated, take a sample as the starting material of mineral superfine powder in the locality, and the following raw material of weighing:
Slag 32.5Kg, zeolite rock 22.5Kg, flyash 35Kg, stone 5Kg green for a long time, unslaked lime 5Kg,
2. carry out grinding with ultra-fine mill, make its specific surface area reach 600/Kg,
3. above-mentioned fine powder is mixed, homogenizing,
4. pack in the bag, promptly get a kind of ultra-fine mineral powder for high-performance concrete of 100Kg the present invention, have another name called ultra-fine mineral powder for high-performance concrete for DBF.
Embodiment 2
1. investigated, take a sample as the starting material of mineral superfine powder in the locality, and the following raw material of weighing:
Slag 35Kg, zeolite rock 20Kg, flyash 35Kg, stone 10Kg green for a long time,
2. carry out grinding with ultra-fine mill, make its specific surface area reach 600/Kg,
3. above-mentioned fine powder is mixed, homogenizing,
4. pack in the bag, promptly get a kind of ultra-fine mineral powder for high-performance concrete of 100Kg the present invention, have another name called ultra-fine mineral powder for high-performance concrete for DBF.
DBF ultra-fine mineral powder for high-performance concrete and concrete high efficiency water reducing agent mixed with No. 525 cement mix the high performance concrete that (equivalent replaces the cement of 30-45% simultaneously) in the concrete of system can make high-quality C60-C80.
The technical feature of adopting the high performance concrete that DBF makes with ultra-fine mineral powder for high-performance concrete is as follows:
With the comparison of not mixing ultrafine powder:
1. under the situation that does not increase water consumption, can make the normal concrete slump increase to 180-250mm, the slump internal loss in 2 hours less than 10%,
2. the concrete divergence is greater than 500mm, and the time that flows down was less than 30 seconds (method of falling the slump cone).
3. 28 days intensity of concrete for do not mix more than 120%, reinforced effects is remarkable.
4. hydration heat was low after concrete was mixed DBF, and hydration heat did not reduce by 30% and 20% respectively than mixing the person in 3 days, 7 days.
5. the strong concrete alkalinity than same intensity reduces 40-50%, can suppress alkali-aggregate reaction.
When 6. anti-penetration grade reached P30, the inner infiltration of test specimen was less than 10mm.
7. during freeze-thaw-(20 ℃) D300, weight and intensity free of losses.
8. carbonization experiment (CO concentration 20%), carbonation depth was zero in 28 days.
Compare with the high performance concrete that other existing mineral superfine powder is allotted, following superiority arranged on technical feature:
1. replace cement with DBF ultra-fine mineral powder for high-performance concrete equivalent and reach as high as 50%, than the polysubstituted cement 15-20% of general mineral superfine powder energy,
2. the 28 days intensity of high performance concrete that makes with the DBF mineral superfine powder improves 25%, improves about 10% than the Strength of High Performance Concrete of allotting with general mineral superfine powder.
3. the concrete of mixing the DBF mineral superfine powder reduces about 10% than the hydration heat of concrete of mixing other mineral superfine powder.
4. the concrete of mixing the DBF mineral superfine powder reduces 10-15% than the concrete alkalinity of mixing other mineral superfine powder
5. the concrete of mixing the DBF mineral superfine powder improves 15-25% and 20-30% respectively than the concrete anti-penetration grade of mixing other mineral superfine powder and freeze proof label
6. mix the carbonization of concrete degree of depth low about 20% of the concrete of DBF mineral superfine powder than the mineral superfine powder of mixing other.
Claims (2)
1, a kind of ultra-fine mineral powder for high-performance concrete, it is made up of slag, zeolite rock, flyash, stone green for a long time, unslaked lime, through weigh, ultra-fine mill, mixing, homogenizing form, and it is characterized in that it is a kind of ultra-fine mineral powder for high-performance concrete by the following weight percentages preparation:
Slag 30-35% zeolite rock 20-25%
Flyash 35-40% stone 5-10% green for a long time
Unslaked lime 0-7%.
2, a kind of ultra-fine mineral powder for high-performance concrete according to claim 1, its feature also is:
1. specific surface area: 400m-800m/Kg
2. water demand ratio:＜95%
3. 28 days glue sand compressive strength rates:＞110%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN001091255A CN1216824C (en) | 2000-06-09 | 2000-06-09 | Ultra-fine mineral powder for high-performance concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN001091255A CN1216824C (en) | 2000-06-09 | 2000-06-09 | Ultra-fine mineral powder for high-performance concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1271697A true CN1271697A (en) | 2000-11-01 |
| CN1216824C CN1216824C (en) | 2005-08-31 |
Family
ID=4579441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN001091255A Expired - Fee Related CN1216824C (en) | 2000-06-09 | 2000-06-09 | Ultra-fine mineral powder for high-performance concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1216824C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863079A (en) * | 2010-06-11 | 2010-10-20 | 冯乃谦 | Method for manufacturing prestressed concrete tubular pile |
| CN102515646A (en) * | 2011-12-15 | 2012-06-27 | 中建三局建设工程股份有限公司 | Antifreeze anticorrosion durable concrete and preparation method thereof |
| CN102603254A (en) * | 2011-01-20 | 2012-07-25 | 中铁九局集团工程检测试验有限公司 | Composite alkali-activating low-carbon cement and preparation method of low-carbon cement |
| CN110054470A (en) * | 2018-05-14 | 2019-07-26 | 冯乃谦 | Solidify the manufacturing method of the environmentally protective concrete of heavy metal in lime-ash |
-
2000
- 2000-06-09 CN CN001091255A patent/CN1216824C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101863079A (en) * | 2010-06-11 | 2010-10-20 | 冯乃谦 | Method for manufacturing prestressed concrete tubular pile |
| CN102603254A (en) * | 2011-01-20 | 2012-07-25 | 中铁九局集团工程检测试验有限公司 | Composite alkali-activating low-carbon cement and preparation method of low-carbon cement |
| CN102515646A (en) * | 2011-12-15 | 2012-06-27 | 中建三局建设工程股份有限公司 | Antifreeze anticorrosion durable concrete and preparation method thereof |
| CN102515646B (en) * | 2011-12-15 | 2016-06-29 | 中建三局建设工程股份有限公司 | A kind of antifreeze anticorrosion durable concrete and preparation method thereof |
| CN110054470A (en) * | 2018-05-14 | 2019-07-26 | 冯乃谦 | Solidify the manufacturing method of the environmentally protective concrete of heavy metal in lime-ash |
| CN110054470B (en) * | 2018-05-14 | 2021-08-06 | 冯乃谦 | Method for preparing environment-friendly concrete for curing heavy metals in ash |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1216824C (en) | 2005-08-31 |
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| CF01 | Termination of patent right due to non-payment of annual fee |