CN103396060A - Concrete mixture for mass concrete construction - Google Patents
Concrete mixture for mass concrete construction Download PDFInfo
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- CN103396060A CN103396060A CN201310343069XA CN201310343069A CN103396060A CN 103396060 A CN103396060 A CN 103396060A CN 201310343069X A CN201310343069X A CN 201310343069XA CN 201310343069 A CN201310343069 A CN 201310343069A CN 103396060 A CN103396060 A CN 103396060A
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Abstract
The invention provides a concrete mixture for mass concrete construction. The concrete mixture is prepared from the following raw materials by weight: 0.8 to 1.2 parts of cement, 3.2 to 3.6 parts of fine aggregate, 4.4 to 4.8 parts of coarse aggregate, 0.2 to 0.6 part of water, 0.008 to 0.009 part of an additive, 0.1 to 0.3 part of fly ash and 0.1 to 0.2 part of ore powder. The concrete mixture allows a concrete building to have guaranteed durability, workability and slump on the basis of guaranteed structural strength and reduces the possibility of generation of cracks of the concrete building; moreover, the usage amount of cement is reduced, so the concrete building is greener and environment friendlier; and mass concrete construction also takes the inevitable course to sustainable development.
Description
Technical field
The present invention relates to the concrete construction field, relate in particular to a kind of concrete mix for mass concrete construction.
Background technology
When carrying out mass concrete construction, according to routine, in order to meet the structural strength of buildings, in concrete mix, the used in amounts of cement is more than or equal to 300 kilograms of every square metre of (kg/m
3), while being mixed with active blending material, cement consumption need be more than or equal to 280kg/m
3.And in practice of construction, the consumption of cement is excessive tends to make hydration heat of concrete too high, causes buildings thermal cracking to occur, affects construction quality.Therefore, in order to reduce to greatest extent hydration heat, concrete mix should select low heat cement to reduce again cement consumption.
Summary of the invention
The invention provides a kind of concrete mix for mass concrete construction, on the basis guaranteeing the concrete structure structural strength, improve its weather resistance, reduce the generation in its crack.
For achieving the above object, the invention provides a kind of concrete mix for mass concrete construction, described concrete mix material therefor consists of the raw material of following weight parts: cement: 0.8-1.2; Fine aggregate: 3.2-3.6; Coarse aggregate: 4.4-4.8; Water: 0.2-0.6; Admixture: 0.008-0.009; Flyash: 0.1-0.3; Breeze: 0.1-0.2.
Further, described cement is P.O42.5 cement.
Further, described fine aggregate is medium sand.
Further, the fineness modulus of described medium sand is 2.3-2.6, and silt content is less than or equal to 1%.
Further, the described coarse aggregate stone that is.
Further, the diameter of described stone is the 5-31.5 millimeter, and silt content is less than or equal to 0.5%.
Further, described water is tap water.
Further, described admixture is poly carboxylic acid.
Further, described poly carboxylic acid is LEX-9P type polycarboxylate water-reducer.
Further, described flyash is II level flyash.
Further, described breeze is S95 level breeze.
Preferably, described concrete mix material therefor consists of the raw material of following weight parts: cement: 1; Fine aggregate: 3.42; Coarse aggregate: 4.68; Water: 0.44; Admixture: 0.008; Flyash: 0.23; Breeze: 0.15.
Compared with prior art, the present invention has following beneficial effect:
at the concrete mix for mass concrete construction provided by the invention, reduced the consumption of cement, improved the silt content of aggregate, used the admixture of poly carboxylic acid as this concrete mix, and adopted the technology of high volume, improved the performance of concrete mix, make concrete structure on the guaranteed basis of its structural strength, its weather resistance, workability and the slump also guarantee to some extent, also reduce simultaneously it and produced the probability in crack, in addition, the minimizing of cement consumption, also make its more environmental protection, make mass concrete construction also go on the only way of Sustainable development.
Embodiment
Below in conjunction with specific embodiment, the concrete mix for mass concrete construction that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.
Core concept of the present invention is, a kind of concrete mix for mass concrete construction is provided, and described concrete mix material therefor consists of the raw material of following weight parts: cement: 0.8-1.2; Fine aggregate: 3.2-3.6; Coarse aggregate: 4.4-4.8; Water: 0.2-0.6; Admixture: 0.008-0.009; Flyash: 0.1-0.3; Breeze: 0.1-0.2.at the concrete mix for mass concrete construction provided by the invention, reduced the consumption of cement, improved the silt content of aggregate, used the admixture of poly carboxylic acid as this concrete mix, and adopted the technology of high volume, improved the performance of concrete mix, make concrete structure on the guaranteed basis of its structural strength, its weather resistance, workability and the slump also guarantee to some extent, also reduce simultaneously it and produced the probability in crack, in addition, the minimizing of cement consumption, also make its more environmental protection, make mass concrete construction also go on the only way of Sustainable development.
The embodiment of the present invention provides a kind of concrete mix for mass concrete construction, and described concrete mix material therefor consists of the raw material of following weight parts:
Cement: 0.8-1.2; Fine aggregate: 3.2-3.6; Coarse aggregate: 4.4-4.8; Water: 0.2-0.6; Admixture: 0.008-0.009; Flyash: 0.1-0.3; Breeze: 0.1-0.2.
Preferably, described concrete mix material therefor consists of the raw material of following weight parts:
P.O42.5 cement: 1; Medium sand: 3.42; Stone: 4.68; Tap water: 0.44; Poly carboxylic acid: 0.008; II level flyash: 0.23; S95 level breeze: 0.15.
In the present embodiment, described fine aggregate is selected medium sand, the fineness modulus of described medium sand is 2.3-2.6, silt content is less than or equal to 1%, described coarse aggregate is selected stone, and the diameter of described stone is 5-31.5 millimeter (mm), and silt content is less than or equal to 0.5%, described admixture is selected poly carboxylic acid, and described poly carboxylic acid is LEX-9P type polycarboxylate water-reducer.
In sum, at the concrete mix for mass concrete construction provided by the invention, (in the present embodiment, cement consumption is 226kg/m to have reduced the consumption of cement
3), improved silt content thin, coarse aggregate, used the admixture of poly carboxylic acid as this concrete mix, and adopted the technology of high volume, improved the performance of concrete mix, make concrete structure on the guaranteed basis of its structural strength, its weather resistance, workability and the slump (slump is controlled at 120 ± 30) also guarantee to some extent, also reduce simultaneously it and produced the probability in crack, in addition, the minimizing of cement consumption, also make its more environmental protection, makes mass concrete construction also go on the only way of Sustainable development
Obviously, those skilled in the art can carry out various changes and not break away from the spirit and scope of the present invention the present invention.Like this, if within these changes of the present invention belong to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these and changes interior.
Claims (12)
1. the concrete mix for mass concrete construction, is characterized in that, described concrete mix material therefor consists of the raw material of following weight parts:
Cement: 0.8-1.2; Fine aggregate: 3.2-3.6; Coarse aggregate: 4.4-4.8; Water: 0.2-0.6; Admixture: 0.008-0.009; Flyash: 0.1-0.3; Breeze: 0.1-0.2.
2. the concrete mix for mass concrete construction according to claim 1, is characterized in that, described cement is P.O42.5 cement.
3. the concrete mix for mass concrete construction according to claim 1, is characterized in that, described fine aggregate is medium sand.
4. the concrete mix for mass concrete construction according to claim 3, is characterized in that, the fineness modulus of described medium sand is 2.3-2.6, and silt content is less than or equal to 1%.
5. the concrete mix for mass concrete construction according to claim 1, is characterized in that, the stone that described coarse aggregate is.
6. the concrete mix for mass concrete construction according to claim 5, is characterized in that, the diameter of described stone is the 5-31.5 millimeter, and silt content is less than or equal to 0.5%.
7. the concrete mix for mass concrete construction according to claim 1, is characterized in that, described water is tap water.
8. the concrete mix for mass concrete construction according to claim 1, is characterized in that, described admixture is poly carboxylic acid.
9. the concrete mix for mass concrete construction according to claim 8, is characterized in that, described poly carboxylic acid is LEX-9P type polycarboxylate water-reducer.
10. the concrete mix for mass concrete construction according to claim 1, is characterized in that, described flyash is II level flyash.
11. the concrete mix for mass concrete construction according to claim 1, is characterized in that, described breeze is S95 level breeze.
12. the described concrete mix for mass concrete construction of according to claim 1 to 11 any one, is characterized in that, described concrete mix material therefor consists of the raw material of following weight parts:
Cement: 1; Fine aggregate: 3.42; Coarse aggregate: 4.68; Water: 0.44; Admixture: 0.008; Flyash: 0.23; Breeze: 0.15.
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| CN201310343069.XA CN103396060B (en) | 2013-08-07 | 2013-08-07 | Concrete mixture for mass concrete construction |
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| CN201310343069.XA CN103396060B (en) | 2013-08-07 | 2013-08-07 | Concrete mixture for mass concrete construction |
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| CN103396060B CN103396060B (en) | 2015-06-10 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922671A (en) * | 2014-03-31 | 2014-07-16 | 江苏扬建集团有限公司 | High performance and low shrinkage concrete for cellar structure of oversized area |
| CN105948619A (en) * | 2016-04-28 | 2016-09-21 | 十九冶成都建设有限公司 | Anti-crack mass concrete prepared by utilizing fly ash and mineral powder double-mixing technology |
| CN106032314A (en) * | 2015-03-20 | 2016-10-19 | 中联重科股份有限公司 | Concrete and preparation method thereof |
| CN106892625A (en) * | 2017-04-10 | 2017-06-27 | 贾茂来 | A kind of concrete mix of mass concrete construction |
| CN107324703A (en) * | 2017-06-14 | 2017-11-07 | 北京兆阳光热技术有限公司 | The formula and preparation technology of a kind of heat accumulation concrete |
| CN111018436A (en) * | 2019-11-29 | 2020-04-17 | 南通万洋混凝土有限公司 | High-strength anti-permeability anti-freezing concrete and processing technology thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
-
2013
- 2013-08-07 CN CN201310343069.XA patent/CN103396060B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353242A (en) * | 2008-09-16 | 2009-01-28 | 中国建筑第三工程局商品混凝土供应站成都分站 | Machine-made sand self-compaction concrete |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922671A (en) * | 2014-03-31 | 2014-07-16 | 江苏扬建集团有限公司 | High performance and low shrinkage concrete for cellar structure of oversized area |
| CN106032314A (en) * | 2015-03-20 | 2016-10-19 | 中联重科股份有限公司 | Concrete and preparation method thereof |
| CN105948619A (en) * | 2016-04-28 | 2016-09-21 | 十九冶成都建设有限公司 | Anti-crack mass concrete prepared by utilizing fly ash and mineral powder double-mixing technology |
| CN106892625A (en) * | 2017-04-10 | 2017-06-27 | 贾茂来 | A kind of concrete mix of mass concrete construction |
| CN107324703A (en) * | 2017-06-14 | 2017-11-07 | 北京兆阳光热技术有限公司 | The formula and preparation technology of a kind of heat accumulation concrete |
| CN111018436A (en) * | 2019-11-29 | 2020-04-17 | 南通万洋混凝土有限公司 | High-strength anti-permeability anti-freezing concrete and processing technology thereof |
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| Publication number | Publication date |
|---|---|
| CN103396060B (en) | 2015-06-10 |
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