CN101941823A - Concrete with high strength and huge fluidity - Google Patents
Concrete with high strength and huge fluidity Download PDFInfo
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- CN101941823A CN101941823A CN 201010296709 CN201010296709A CN101941823A CN 101941823 A CN101941823 A CN 101941823A CN 201010296709 CN201010296709 CN 201010296709 CN 201010296709 A CN201010296709 A CN 201010296709A CN 101941823 A CN101941823 A CN 101941823A
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Abstract
The invention relates to concrete with high strength and huge fluidity, the concrete per cubic meter consists of the following components: 390kg of P. II62.5, 210kg of coal ash, 25kg of silica powder, 650kg of sand, 1100kg of continuous graded broken stone which maximum grain size is 5mm-25mm, 150kg of water and 8.4kg of super plasticizer.
Description
Technical field
The invention belongs to field of civil engineering concrete material field, a kind of high strength super mobility concrete that is specifically related to.
Technical background
According to the regulation of China's related specifications, the slump 〉=160mm is the high flowability concrete, and the most at present high flowability concrete of China is all as the control requirement.Along with the increase of concrete flowability, make it can realize centralized production, supply at a fixed location, thereby realized the commercialization of concrete production, therefore increasing concrete flowability has all played positive effect for the development of concrete industry, the increase of function.
Yet, along with the continuous increase of concrete slump, produced two technological difficulties that must be paid close attention to thereupon:
Therefore (1) increase of the slump will must be guaranteed sufficient water consumption to a great extent, causes the water-cement ratio should not be low excessively, is reflected on the intensity and then can't realizes higher intensity, and fundamental strength is all below C60;
(2) the continuous increase of the slump causes the maintenance of cohesiveness to have big difficulty.When the slump reaches 220mm when above, segregation very easily.
So, overcome above-mentioned technological difficulties, producing a kind of high strength super mobility concrete is the problem that needs solution.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, solve strong concrete (grade of compressive strength reached more than the C80 in 28 days) technical problem such as mixture flowability, workability difference in the mix process, a kind of concrete with super high strength concrete slump and super-high fluidity is provided, thereby improves the concrete construction performance.
The technical scheme that realizes the object of the invention is: a kind of high strength super mobility concrete, every cubic metre described concrete is by the PII 62.5 of 390kg, the flyash of 210kg, the silica flour of 25kg, the sand of 650kg, maximum particle diameter is the rubble 1100kg of the continuous grading of 5mm～25mm, and the water of 150kg and the high efficiency water reducing agent of 8.4kg are formed, and the correlated performance parameter of above-mentioned each component is as follows:
1. the related physical mechanical property of cement sees Table 1:
Table 1 cement physical and mechanical property
2. flyash correlation technique parameter sees Table:
Table 2 flyash technical parameter
| Fineness (45 μ m square hole sieve) | Water demand ratio (%) | Loss on ignition (%) |
| 0.19 | 102 | 2.4 |
3. sand facies close technical indicator and see Table 3:
Table 3 sand technical indicator
| Fineness modulus | Silt content (%) | Clod content (%) |
| 2.54 | 0.3 | 0 |
4. coarse aggregate correlation technique index sees Table 4:
Table 4 coarse aggregate technical indicator
| Silt content (%) | Clod content (%) | Faller gill shape granule content (%) | Crush index value (%) |
| 0.2 | 0 | 5.3 | 5.7 |
5. the silica flour key index sees Table 5:
Table 5 silica flour key index
| Loss on ignition (%) | SiO 2(％) | Activity index (%) | Water ratio (%) |
| 1.6 | 91 | 21 | 0.7 |
6. the high efficiency water reducing agent correlation parameter sees Table 6:
Table 6 high-efficiency water-reducing agent of poly-carboxylic acid index of correlation
Defectives such as strong concrete of the present invention possesses serviceability preferably, and the mixture slump that solves low water binder ratio is less, and workability is relatively poor are controlled high-strength concrete mixture workability preferably, for the lifting of construction quality provides guarantee.
Embodiment
A kind of high strength super mobility concrete is combined by following raw material and proportioning.
(1) raw material is as follows:
1. cement: Anhui conch PII 62.5 cement, its related physical mechanical property sees Table 1.
Table 1 cement physical and mechanical property
2. flyash: Zhenjiang Hua Yuan I level flyash, its correlation technique parameter sees Table 2.
Table 2 flyash technical parameter
| Fineness (45 μ m square hole sieve) | Water demand ratio (%) | Loss on ignition (%) |
| 0.19 | 102 | 2.4 |
3. sand: Ganjiang River mixing medium sand, its correlation technique index sees Table 3.
Table 3 sand technical indicator
| Fineness modulus | Silt content (%) | Clod content (%) |
| 2.54 | 0.3 | 0 |
4. coarse aggregate: (5～25mm), its correlation technique index sees Table 4 to Zhenjiang Chuan Shan rubble.
Table 4 coarse aggregate technical indicator
| Silt content (%) | Clod content (%) | Faller gill shape granule content (%) | Crush index value (%) |
| 0.2 | 0 | 5.3 | 5.7 |
5. silica flour: its key index sees Table 5
| Loss on ignition (%) | SiO 2(％) | Activity index (%) | Water ratio (%) |
| 1.6 | 91 | 21 | 0.7 |
6. high efficiency water reducing agent: Jiangsu Bo Te PCA, correlation parameter sees Table 6
Table 6 high-efficiency water-reducing agent of poly-carboxylic acid index of correlation
(2) proportioning is as shown in table 7:
The high-strength super mobility concrete mix of table 7
(3) result
1. serviceability is as shown in table 8:
The high-strength super mobility workability of concrete of table 8 energy
| Slump mm | Divergence mm | 1h slump-loss mm |
| 240 | 550*560 | 20 |
2. mechanical property is as shown in table 9
The high-strength super mobility mechanical performance of concrete of table 9
| 3d ultimate compression strength | 7d ultimate compression strength | 28d ultimate compression strength | 56d ultimate compression strength |
| 43MPa | 75MPa | ?92MPa | 98MPa |
Production method is as follows:
1, prepares each component by starting material and proportioning requirement;
2, stir according to following requirement:
1. cement, flyash, silica flour, sand input stir 30s;
2. add stone and water and stir 180s.
3, vibrate according to relevant job specifications;
4, after the form removal, the mode of taking geotextile to cover is at once carried out health, constantly keeps the skin wet in the health process and guarantees the moistening of concrete outside surface, and conditioned time is no less than 7 days.
Claims (1)
1. high strength super mobility concrete, it is characterized in that, every cubic metre described concrete is by the PII 62.5 of 390kg, the flyash of 210kg, the silica flour of 25kg, the sand of 650kg, maximum particle diameter is the rubble 1100kg of the continuous grading of 5mm～25mm, the water of 150kg and the high efficiency water reducing agent of 8.4kg are formed, and the correlated performance parameter of above-mentioned each component is as follows:
1. the related physical mechanical property of cement sees Table 1:
Table 1 cement physical and mechanical property
2. flyash correlation technique parameter sees Table:
Table 2 flyash technical parameter
3. sand facies close technical indicator and see Table 3:
Table 3 sand technical indicator
4. coarse aggregate correlation technique index sees Table 4:
Table 4 coarse aggregate technical indicator
5. the silica flour key index sees Table 5:
Table 5 silica flour key index
6. the high efficiency water reducing agent correlation parameter sees Table 6:
Table 6 high-efficiency water-reducing agent of poly-carboxylic acid index of correlation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102967092A CN101941823B (en) | 2010-09-29 | 2010-09-29 | Concrete with high strength and huge fluidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102967092A CN101941823B (en) | 2010-09-29 | 2010-09-29 | Concrete with high strength and huge fluidity |
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| Publication Number | Publication Date |
|---|---|
| CN101941823A true CN101941823A (en) | 2011-01-12 |
| CN101941823B CN101941823B (en) | 2012-11-14 |
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| CN2010102967092A Active CN101941823B (en) | 2010-09-29 | 2010-09-29 | Concrete with high strength and huge fluidity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747100A (en) * | 2016-12-28 | 2017-05-31 | 广州大学 | A kind of high-strength mechanism rock sand concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451626A (en) * | 2002-04-17 | 2003-10-29 | 杨果林 | High strength steel fibre concrete and making method thereof |
| CN1792978A (en) * | 2005-12-08 | 2006-06-28 | 贵州省公路工程总公司 | Machine-made sand self-compacting concrete |
| CN101486554A (en) * | 2009-02-20 | 2009-07-22 | 武汉理工大学 | Low cost active powder concrete and preparation thereof |
-
2010
- 2010-09-29 CN CN2010102967092A patent/CN101941823B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1451626A (en) * | 2002-04-17 | 2003-10-29 | 杨果林 | High strength steel fibre concrete and making method thereof |
| CN1792978A (en) * | 2005-12-08 | 2006-06-28 | 贵州省公路工程总公司 | Machine-made sand self-compacting concrete |
| CN101486554A (en) * | 2009-02-20 | 2009-07-22 | 武汉理工大学 | Low cost active powder concrete and preparation thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《建筑材料学报》 20100831 赵晖等 水泥细度对混凝土劣化性能的影响 第520-523页 1 第13卷, 第4期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747100A (en) * | 2016-12-28 | 2017-05-31 | 广州大学 | A kind of high-strength mechanism rock sand concrete |
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| CN101941823B (en) | 2012-11-14 |
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Address after: 211112 No. 223 Simon Street, Jiangsu, Nanjing Patentee after: JSTI GROUP Co.,Ltd. Address before: 211112 No. 223 Simon Street, Jiangsu, Nanjing Patentee before: JIANGSU TRANSPORTATION RESEARCH INSTITUTE Co.,Ltd. |
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Effective date of registration: 20180822 Address after: 550003 1-3-20 three floor, building 1, Qishan temporary housing estate, Hu Chao New District, Guizhou Province, Guizhou Patentee after: Guizhou Sujiao engineering survey and Design Co.,Ltd. Address before: 211112 No. 223, Shui Simen street, Nanjing, Jiangsu. Patentee before: JSTI GROUP Co.,Ltd. |