CN103342522A - Cracking resisting concrete - Google Patents
Cracking resisting concrete Download PDFInfo
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- CN103342522A CN103342522A CN2013103012148A CN201310301214A CN103342522A CN 103342522 A CN103342522 A CN 103342522A CN 2013103012148 A CN2013103012148 A CN 2013103012148A CN 201310301214 A CN201310301214 A CN 201310301214A CN 103342522 A CN103342522 A CN 103342522A
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Abstract
The invention discloses cracking resisting concrete. The cracking resisting concrete comprises the following components in parts by mass: 230-420 parts of cement, 60-120 parts of mineral powder, 40-70 parts of pulverized fuel ash, 175-190 parts of water, 580-765 parts of sand, 1,080-1,090 parts of gravel and 3.6-6.96 parts of a high-performance polycarboxylate admixture. The cracking resisting concrete disclosed by the invention has high ultimate strain capacity and high cracking resistance and is low in production cost, less cement is used, and less energy is consumed.
Description
Technical field
The present invention relates to a kind of anti-crack concrete, belong to the concrete technology field, be applicable to any position of concrete works, especially the concrete works that antiseepage is had relatively high expectations to concrete anticracking is as the engineering of lasting moisture-keeping maintaining difficulties such as tunnel, harbour and worker China Democratic National Construction Association basement bottom board, side wall.
Background technology
At present, many underground workss, especially mass concrete engineering, distress in concrete is comparatively general, for preventing that concrete from the crack occurring and generally taking admixture swelling agent and polypropylene fibre technology means to be effective at present, but the admixture above-mentioned materials can increase the concrete cost and (increase by 35 ~ 50 yuan of costs/m3), and need be aided with artificial interpolation, labour intensity and environmental pollution have been strengthened, if employing automation process, again because of should in concrete and other to compare proportion low, cause the problem of increase facility investment and the idleness of equipment.And the curing requirements to engineering is also quite high behind the admixture swelling agent, in case the maintenance probability that produces the crack that can increase on the contrary not in place has increased construction cost.
Summary of the invention
Technical problem to be solved by this invention is the defective that overcomes prior art, and a kind of anti-crack concrete is provided, and it can improve the ability of concrete ultimate strain, thereby improves concrete capacity against cracking greatly, reduces cement consumption, and energy efficient reduces production costs.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of anti-crack concrete, and its component and each component mass parts are as follows:
Cement: 230 parts ~ 420 parts; Breeze: 60 parts ~ 120 parts;
Flyash: 40 parts ~ 70 parts; Water: 175 parts ~ 190 parts;
Sand: 580 parts ~ 765 parts; Stone: 1080 parts ~ 1090 parts;
Poly-carboxylic high-performance admixture: 3.6 parts ~ 6.96 parts.
Further, its component and each component mass parts are as follows:
Cement: 260 parts; Breeze: 60 parts;
Flyash: 50 parts; Water: 180 parts;
Sand: 765 parts; Stone: 1080 parts;
Poly-carboxylic high-performance admixture: 3.88 parts.
Further, its component and each component mass parts are as follows:
Cement: 300 parts; Breeze: 70 parts;
Flyash: 50 parts; Water: 175 parts;
Sand: 720 parts; Stone: 1085 parts;
Poly-carboxylic high-performance admixture: 4.62 parts.
Further, cement is P.O.42.5 cement.
Further, breeze is S95 level breeze.
Further, described flyash is I level flyash.
After having adopted technique scheme, the present invention has following beneficial effect: adopt the poly-carboxylic high-performance admixture to substitute the concrete that swelling agent stirs, good fluidity, volume stability significantly improve, have reducing function, its contraction ratio is about 79%, performance even the effect that is better than mixing swelling agent, has the function that reduces the cement-based material early hydration and reduce hydration heat speed simultaneously, has the interface structure of improvement state, improve the ability of concrete ultimate strain, thereby improved concrete capacity against cracking greatly.Simultaneously, also reduced cement consumption, saved energy consumption, the concrete for making cost significantly reduces, full-automatic process simple to operate, reduced pollution, this concrete have high protect collapse, the high enhancing and characteristics such as low contraction, compare with the expanded polystyrene veneer admixture, not only cost is low, and concrete maintenance is had no special requirements.
Embodiment
Content of the present invention is easier to be expressly understood that below according to specific embodiment, the present invention is further detailed explanation in order to make,
Embodiment one,
A kind of anti-crack concrete, its component and each component mass parts are as follows:
Cement: 260 parts; Breeze: 60 parts;
Flyash: 50 parts; Water: 180 parts;
Sand: 765 parts; Stone: 1080 parts;
Poly-carboxylic high-performance admixture: 3.88 parts.
Cement, breeze, flyash, sand, the stone of above-mentioned mass parts are dropped into stirrer and stir, and the water and the poly-carboxylic high-performance admixture that add above-mentioned mass parts simultaneously stir, and obtain this concrete.The gained concrete strength is C35, draws the ability that it has improved the concrete ultimate strain through detecting, and has improved concrete capacity against cracking, has reduced cement consumption, has saved energy consumption, has reduced production cost.
Embodiment two
A kind of anti-crack concrete, its component and each component mass parts are as follows:
Cement: 300 parts; Breeze: 70 parts;
Flyash: 50 parts; Water: 175 parts;
Sand: 720 parts; Stone: 1085 parts;
Poly-carboxylic high-performance admixture: 4.62 parts.
Cement, breeze, flyash, sand, the stone of above-mentioned mass parts are dropped into stirrer and stir, and the water and the poly-carboxylic high-performance admixture that add above-mentioned mass parts simultaneously stir, and obtain this concrete.The gained concrete strength is C40, draws the ability that it has improved the concrete ultimate strain through detecting, and has improved concrete capacity against cracking, has reduced cement consumption, has saved energy consumption, has reduced production cost.
Embodiment three
A kind of anti-crack concrete, its component and each component mass parts are as follows:
Cement: 230 parts; Breeze: 60 parts;
Flyash: 70 parts; Water: 190 parts;
Sand: 760 parts; Stone: 1090 parts;
Poly-carboxylic high-performance admixture: 3.6 parts.
Cement, breeze, flyash, sand, the stone of above-mentioned mass parts are dropped into stirrer and stir, and the water and the poly-carboxylic high-performance admixture that add above-mentioned mass parts simultaneously stir, and obtain this concrete.The gained concrete strength is C40, draws the ability that it has improved the concrete ultimate strain through detecting, and has improved concrete capacity against cracking, has reduced cement consumption, has saved energy consumption, has reduced production cost.
Embodiment four
A kind of anti-crack concrete, its component and each component mass parts are as follows:
Cement: 420 parts; Breeze: 120 parts;
Flyash: 40 parts; Water: 190 parts;
Sand: 580 parts; Stone: 1090 parts;
Poly-carboxylic high-performance admixture: 6.96 parts.
Cement, breeze, flyash, sand, the stone of above-mentioned mass parts are dropped into stirrer and stir, and the water and the poly-carboxylic high-performance admixture that add above-mentioned mass parts simultaneously stir, and obtain this concrete.The gained concrete strength is C60, draws the ability that it has improved the concrete ultimate strain through detecting, and has improved concrete capacity against cracking, has reduced cement consumption, has saved energy consumption, has reduced production cost.
Cement can be selected P.O.42.5 cement for use in above-described embodiment, and breeze can be selected S95 level breeze for use.Flyash can be selected I level flyash for use.Wherein, P.O refers to ordinary Portland cement in the P.O42.5 cement, and 42.5 refer to cement intensity (28 days).
This concrete is under through many times preparation and practical application, than other concrete, its crack resistance improves greatly, adopt the poly-carboxylic high-performance admixture to substitute the concrete that swelling agent stirs, good fluidity, volume stability significantly improves, has reducing function, its contraction ratio is about 79%, performance even the effect that is better than mixing swelling agent, has the function that reduces the cement-based material early hydration and reduce hydration heat speed simultaneously, has the interface structure of improvement state, improve the ability of concrete ultimate strain, thereby improved concrete capacity against cracking greatly.Simultaneously, also reduced cement consumption, saved energy consumption, the concrete for making cost significantly reduces, full-automatic process simple to operate, reduced pollution, this concrete have high protect collapse, the high enhancing and characteristics such as low contraction, compare with the expanded polystyrene veneer admixture, not only cost is low, and concrete maintenance is had no special requirements.
Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the present invention is solved further describe; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. anti-crack concrete is characterized in that its component and each component mass parts are as follows:
Cement: 230 parts ~ 420 parts; Breeze: 60 parts ~ 120 parts;
Flyash: 40 parts ~ 70 parts; Water: 175 parts ~ 190 parts;
Sand: 580 parts ~ 765 parts; Stone: 1080 parts ~ 1090 parts;
Poly-carboxylic high-performance admixture: 3.6 parts ~ 6.96 parts.
2. anti-crack concrete according to claim 1, it is characterized in that: its component and each component mass parts are as follows:
Cement: 260 parts; Breeze: 60 parts;
Flyash: 50 parts; Water: 180 parts;
Sand: 765 parts; Stone: 1080 parts;
Poly-carboxylic high-performance admixture: 3.88 parts.
3. anti-crack concrete according to claim 1, it is characterized in that: its component and each component mass parts are as follows:
Cement: 300 parts; Breeze: 70 parts;
Flyash: 50 parts; Water: 175 parts;
Sand: 720 parts; Stone: 1085 parts;
Poly-carboxylic high-performance admixture: 4.62 parts.
4. according to claim 1 or 2 or 3 described anti-crack concretes, it is characterized in that: described cement is P.O.42.5 cement.
5. according to claim 1 or 2 or 3 described anti-crack concretes, it is characterized in that: described breeze is S95 level breeze.
6. according to claim 1 or 2 or 3 described anti-crack concretes, it is characterized in that: described flyash is I level flyash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103012148A CN103342522A (en) | 2013-07-18 | 2013-07-18 | Cracking resisting concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103012148A CN103342522A (en) | 2013-07-18 | 2013-07-18 | Cracking resisting concrete |
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| CN103342522A true CN103342522A (en) | 2013-10-09 |
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| CN2013103012148A Pending CN103342522A (en) | 2013-07-18 | 2013-07-18 | Cracking resisting concrete |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922680A (en) * | 2014-03-22 | 2014-07-16 | 中国二十二冶集团有限公司 | Method for preparing green high-performance concrete by large doping amount mineral admixture |
| CN104016630A (en) * | 2014-04-30 | 2014-09-03 | 枞阳县天筑新型建筑材料有限公司 | Heat-preservation and freezing-resistant concrete and preparation method thereof |
| CN106116440A (en) * | 2016-07-01 | 2016-11-16 | 曹平 | A kind of high crack-resisting |
| CN106145842A (en) * | 2016-06-29 | 2016-11-23 | 北京住总商品混凝土中心 | A kind of anti-crack concrete |
| CN106187062A (en) * | 2016-07-02 | 2016-12-07 | 曹平 | A kind of high crack-resisting |
| CN108129092A (en) * | 2017-12-29 | 2018-06-08 | 成都精准混凝土有限公司 | Mass concrete and its preparation process |
| CN109336503A (en) * | 2018-10-30 | 2019-02-15 | 蚌埠市方阵商品混凝土有限公司 | A kind of durable anti-crack concrete in tunnel |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060481A (en) * | 2010-11-15 | 2011-05-18 | 北京新奥混凝土集团有限公司 | Low cementitious material self-compacting concrete |
| CN102617091A (en) * | 2012-04-01 | 2012-08-01 | 江苏名和集团有限公司 | Machine-made sand self-leveling concrete |
-
2013
- 2013-07-18 CN CN2013103012148A patent/CN103342522A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060481A (en) * | 2010-11-15 | 2011-05-18 | 北京新奥混凝土集团有限公司 | Low cementitious material self-compacting concrete |
| CN102617091A (en) * | 2012-04-01 | 2012-08-01 | 江苏名和集团有限公司 | Machine-made sand self-leveling concrete |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922680A (en) * | 2014-03-22 | 2014-07-16 | 中国二十二冶集团有限公司 | Method for preparing green high-performance concrete by large doping amount mineral admixture |
| CN104016630A (en) * | 2014-04-30 | 2014-09-03 | 枞阳县天筑新型建筑材料有限公司 | Heat-preservation and freezing-resistant concrete and preparation method thereof |
| CN106145842A (en) * | 2016-06-29 | 2016-11-23 | 北京住总商品混凝土中心 | A kind of anti-crack concrete |
| CN106116440A (en) * | 2016-07-01 | 2016-11-16 | 曹平 | A kind of high crack-resisting |
| CN106187062A (en) * | 2016-07-02 | 2016-12-07 | 曹平 | A kind of high crack-resisting |
| CN108129092A (en) * | 2017-12-29 | 2018-06-08 | 成都精准混凝土有限公司 | Mass concrete and its preparation process |
| CN109336503A (en) * | 2018-10-30 | 2019-02-15 | 蚌埠市方阵商品混凝土有限公司 | A kind of durable anti-crack concrete in tunnel |
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Application publication date: 20131009 |