CN105272042B - A kind of antifreeze anti-crack concrete - Google Patents
A kind of antifreeze anti-crack concrete Download PDFInfo
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- CN105272042B CN105272042B CN201510734351.XA CN201510734351A CN105272042B CN 105272042 B CN105272042 B CN 105272042B CN 201510734351 A CN201510734351 A CN 201510734351A CN 105272042 B CN105272042 B CN 105272042B
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Abstract
The present invention relates to a kind of antifreeze anti-crack concrete of building material field, including following components in percentage by weight：Cement 10 20%, sand 25 30%, stone 30 45%, water 10 15%, additive 2.0 5.0%, waterproofing agent 1.0 2.0%, antifreezing agent 0.0 1.4%, concrete is made through dispensing, stirring.Compared with prior art, the beneficial effects of the invention are as follows：The concrete has the advantages that intensity height, good toughness, freedom from cracking, antiseep, stability are high, can effectively it solve because difference variation causes the concrete crackle that thawing is caused repeatedly, change shortcake, infiltration phenomenon, intensity, toughness and the stability indicator of concrete are improved, is particularly suitable for cold area in north.
Description
Technical field
The present invention relates to a kind of concrete of building material field, more particularly to a kind of antifreeze anti-crack concrete.
Background technology
It is widely used in the engineerings such as underground engineering, bridge, pond, water tower, culvert, tunnel, harbour, dykes and dams, power station
Concrete, does not only have higher intensity, toughness and stability requirement, and must have itself certain water resistance simultaneously,
In northern area, in addition it is also necessary to possess cold-resistant anti-freezing property.Especially extremely frigid zones, difference variation is big, and concrete is by repeatedly anti-
Freeze again, easily occur crackle after melting process, become crisp, infiltration phenomenon, the index such as its intensity, toughness and stability is by serious
Influence.Obviously, conventional cement, sand, the stone concrete being mixed into that adds water can not meet requirement.
The content of the invention
To overcome prior art defect, present invention solves the technical problem that being to provide a kind of antifreeze anti-crack concrete, have
The advantages of intensity height, good toughness, freedom from cracking, antiseep, high stability, can effectively it solve because difference variation causes concrete anti-
Crackle that multiple thawing is caused, become crisp, infiltration phenomenon, improve its intensity, toughness and stability indicator.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of antifreeze anti-crack concrete, it is characterised in that include the component of following weight：Cement 10-20, sand
25-30, stone 30-45, water 10-15, additive 2.0-5.0, waterproofing agent 1.0-2.0, antifreezing agent 0.0-1.4；
The cement is Portland cement, portland slag cement, portland cement, Portland fly ash cement
One kind, grade is 32.5 or 42.5；
The additive is high-performance compound additive, by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, silicic acid
Sodium presses 1:1:1:1:1:1 proportions are formed；Wherein, water reducer is aliphatic pulvis water reducer, naphthalene system pulvis water reducer or poly-
One kind of hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；Cellulose
Ether is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
The waterproofing agent is higher fatty acids waterproofing agent, aluminate water-proof agent, one kind of organic silicon waterproofing agent, and its quality refers to
Mark is met《Mortar, concrete waterproofer》(JC474-2008) standard requirement.
The antifreezing agent is natrium nitrosum, nitrite, calcium chloride, ethylene glycol, calcium nitrite, the one or more of urea
Mixture, its quality index meet《Concrete antifreezer》(JC475-2004) standard requirement.
A kind of preparation method of antifreeze anti-crack concrete, it is characterised in that comprise the following steps：
1) by sand, stone drying to moisture content below 0.5%；
2) sift out and remove the stone that particle diameter is more than 25mm；
3) feeding sequence when stirring：Sand, cement, stone, stirring add additive after 30 seconds and stirred 20 seconds, then add
Waterproofing agent, antifreezing agent, water, are stirred 90 seconds.
Compared with prior art, the beneficial effects of the invention are as follows：The concrete has intensity height, good toughness, freedom from cracking, anti-
The advantages of seepage, high stability, can effectively solve due to difference variation cause the concrete crackle that thawing is caused repeatedly, become it is crisp,
Seep water phenomenon, improves intensity, toughness and the stability indicator of concrete, is particularly suitable for cold area in north.
Embodiment
With reference to specific embodiment, the invention will be further described, but protection model not thereby limiting the invention
Enclose.
In following examples, unless otherwise specified, the percentage of component refers both to percentage by weight.
【Embodiment 1】
A kind of antifreeze anti-crack concrete, adapts to Daily minimum temperature：>=5 DEG C, component formula：Cement 10.0%, sand 30.0%,
Stone 42.0%, water 15.0%, additive 2.0%, waterproofing agent 1.0%, antifreezing agent 0.0%.
Wherein, cement is Portland cement, grade 32.5；
The additive is high-performance compound additive, by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, silicic acid
Sodium presses 1:1:1:1:1:1 part by weight is formulated；Wherein, water reducer be aliphatic pulvis water reducer, naphthalene system pulvis water reducer,
Or one kind of poly- hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；It is fine
The plain ether of dimension is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
Waterproofing agent is organic silicon waterproofing agent.
Preparation method is as follows：
1) by sand, stone drying to moisture content below 0.5%；
2) sift out and remove the stone that particle diameter is more than 25mm；
3) feeding sequence when stirring：Sand, cement, stone, stirring add additive after 30 seconds and stirred 20 seconds, then add
Waterproofing agent, water, are stirred 90 seconds.
【Embodiment 2】
A kind of antifreeze anti-crack concrete, adapts to Daily minimum temperature：5 DEG C~-5 DEG C, component formula：Cement 12.0%, sand
28.0%th, stone 41.0%, water 14.0%, additive 2.8%, waterproofing agent 1.2%, antifreezing agent 1.0%.
Wherein, cement is Portland fly ash cement, grade 32.5；
The additive is high-performance compound additive, by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, silicic acid
Sodium presses 1:1:1:1:1:1 part by weight is formulated；Wherein, water reducer be aliphatic pulvis water reducer, naphthalene system pulvis water reducer,
Or one kind of poly- hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；It is fine
The plain ether of dimension is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
Waterproofing agent is higher fatty acids waterproofing agent；
Antifreezing agent is calcium chloride, calcium nitrite (1:1) mixture.
Preparation method is as follows：
1) by sand, stone drying to moisture content below 0.5%；
2) sift out and remove the stone that particle diameter is more than 25mm；
3) feeding sequence when stirring：Sand, cement, stone, stirring add additive after 30 seconds and stirred 20 seconds, then add
Waterproofing agent, antifreezing agent, water, are stirred 90 seconds.
【Embodiment 3】
A kind of antifreeze anti-crack concrete, adapts to Daily minimum temperature：- 5 DEG C~-15 DEG C, component formula：Cement 13.0%, sand
28.0%th, stone 39.7%, water 14.0%, additive 3.0%, waterproofing agent 1.2%, antifreezing agent 1.1%.
Wherein, cement is Portland fly ash cement, class 4 2.5；
The additive is high-performance compound additive, by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, silicic acid
Sodium presses 1:1:1:1:1:1 proportions are formed；Wherein, water reducer is aliphatic pulvis water reducer, naphthalene system pulvis water reducer or poly-
One kind of hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；Cellulose
Ether is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
Waterproofing agent is higher fatty acids waterproofing agent；
Antifreezing agent is calcium chloride, urea (1:1) mixture.
【Embodiment 4】
A kind of antifreeze anti-crack concrete, adapts to Daily minimum temperature：- 15 DEG C~-25 DEG C, component formula：Cement 13.3%, sand
28.0%th, stone 40.0%, water 13.0%, additive 3.2%, waterproofing agent 1.3%, antifreezing agent 1.2%.
Wherein, cement is portland slag cement, class 4 2.5；
The additive is high-performance compound additive, by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, silicic acid
Sodium presses 1:1:1:1:1:1 proportions are formed；Wherein, water reducer is aliphatic pulvis water reducer, naphthalene system pulvis water reducer or poly-
One kind of hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；Cellulose
Ether is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
Waterproofing agent is aluminate water-proof agent；
Antifreezing agent is natrium nitrosum.
【Embodiment 5】
A kind of antifreeze anti-crack concrete, adapts to Daily minimum temperature：- 25 DEG C~-35 DEG C, component formula：Cement 15.0%, sand
27.0%th, stone 38.5%, water 12.1%, additive 4.0%, waterproofing agent 2.0%, antifreezing agent 1.4%.
Wherein, cement is portland cement, class 4 2.5；
The additive is high-performance compound additive, by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, silicic acid
Sodium presses 1:1:1:1:1:1 proportions are formed；Wherein, water reducer is aliphatic pulvis water reducer, naphthalene system pulvis water reducer or poly-
One kind of hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；Cellulose
Ether is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
Waterproofing agent is higher fatty acids waterproofing agent；
Antifreezing agent is natrium nitrosum, ethylene glycol, calcium nitrite (1:1:1) mixture.
Embodiment 3-5 preparation method all be the same as Examples 2.
Determine the performance indications of concrete described in embodiment 1-5：Compressive strength rate, permeated height ratio, 48h water demand ratios,
The assay method of 28d shrinkage ratios is determined using this area conventional method, and measurement result is shown in Table 1.
Table 1, the performance indications of concrete described in embodiment 1-5
Claims (2)
1. a kind of antifreeze anti-crack concrete, it is characterised in that include the component of following weight：Cement 10-20, sand 25-
30th, stone 30-45, water 10-15, additive 2.0-5.0, waterproofing agent 1.0-2.0, antifreezing agent 0.0-1.4；
The cement is Portland cement, portland slag cement, portland cement, the one of Portland fly ash cement
Kind, grade is 32.5 or 42.5；
The additive is high-performance compound additive, is pressed by water reducer, swelling agent, cellulose ether, boric acid, aluminium powder, sodium metasilicate
1:1:1:1:1:1 part by weight is formulated；Wherein, water reducer is aliphatic pulvis water reducer, naphthalene system pulvis water reducer or poly-
One kind of hydroxy acid pulvis water reducer；Swelling agent is one kind of calcium oxide swelling agent, alum swelling agent and iron filings swelling agent；Cellulose
Ether is methylcellulose, hydroxypropyl methyl cellulose, ethyl cellulose, one kind of hydroxyethyl cellulose；
The waterproofing agent is higher fatty acids waterproofing agent, aluminate water-proof agent, one kind of organic silicon waterproofing agent, and its quality index expires
Foot《Mortar, concrete waterproofer》(JC474-2008) standard requirement；
The antifreezing agent is natrium nitrosum, calcium chloride, ethylene glycol, calcium nitrite, one or more of mixtures of urea, its matter
Figureofmerit is met《Concrete antifreezer》(JC475-2004) standard requirement.
2. realize a kind of preparation method of antifreeze anti-crack concrete described in claim 1, it is characterised in that including following step
Suddenly：
1) by sand, stone drying to moisture content below 0.5%；
2) sift out and remove the stone that particle diameter is more than 25mm；
3) feeding sequence when stirring：Sand, cement, stone, stirring add additive after 30 seconds and stirred 20 seconds, then add waterproof
Agent, antifreezing agent, water, are stirred 90 seconds.
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| CN105272042B true CN105272042B (en) | 2017-07-18 |
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| CN106007566A (en) * | 2016-05-19 | 2016-10-12 | 中国三冶集团有限公司 | Antifreezing anti-cracking thermal insulation mortar containing rice hull powder and preparation method thereof |
| CN106007509A (en) * | 2016-05-19 | 2016-10-12 | 中国三冶集团有限公司 | High-strength thermal mortar prepared from slag powder, and preparation method of high-strength thermal mortar |
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| CN109279823A (en) * | 2017-07-21 | 2019-01-29 | 谢国荣 | Superpower toughness highway concrete |
| CN107814504A (en) * | 2017-10-24 | 2018-03-20 | 安徽艾米伦特建材科技有限公司 | Concrete antifreezer and preparation method thereof |
| CN107746217A (en) * | 2017-11-09 | 2018-03-02 | 安徽艾米伦特建材科技有限公司 | Frost-resistant concrete and preparation method thereof |
| CN108017333A (en) * | 2017-12-28 | 2018-05-11 | 安徽金丰新型建材有限公司 | A kind of anti-cracking high-strength degree concrete |
| CN108661230B (en) * | 2018-04-03 | 2020-10-02 | 济南大学 | Impervious concrete block and processing method thereof |
| CN108911558A (en) * | 2018-08-01 | 2018-11-30 | 国家林业局昆明勘察设计院 | A kind of high and cold, high altitude localities concrete admixture |
| CN109354463B (en) * | 2018-12-08 | 2021-02-02 | 曙光装配式建筑科技（浙江）有限公司 | Anti-seepage and anti-freezing C30 concrete and preparation method thereof |
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| CN110698119A (en) * | 2019-10-23 | 2020-01-17 | 柴瑞龙 | Concrete containing antifreezing agent and preparation method thereof |
| CN111003981B (en) * | 2019-12-03 | 2021-07-30 | 青岛兴业商砼有限公司 | High-strength anti-permeability anti-freezing concrete and preparation method thereof |
| CN112047673A (en) * | 2020-07-21 | 2020-12-08 | 甘肃省地震局（中国地震局兰州地震研究所） | C40 inorganic coating composite anti-freezing concrete and preparation method thereof |
| CN111925162A (en) * | 2020-08-11 | 2020-11-13 | 李睿 | Egg shell powder modified concrete and preparation method thereof |
| CN111875285A (en) * | 2020-08-18 | 2020-11-03 | 衡阳市九州建材有限公司 | Concrete mortar anti-cracking additive and preparation method thereof |
| CN113277823A (en) * | 2021-01-29 | 2021-08-20 | 江苏昆腾新材料科技有限公司 | High-performance cold-resistant anti-freezing concrete and preparation method thereof |
| CN113461374A (en) * | 2021-07-01 | 2021-10-01 | 陕西天力恒泰新型建材有限公司 | Anti-freezing and anti-cracking concrete and preparation method thereof |
| CN113800846A (en) * | 2021-08-13 | 2021-12-17 | 河南正大金盾环保材料有限公司 | Rigid waterproof, freeze-thaw resistant, anticorrosive, self-compacting high-performance concrete and preparation method thereof |
| CN113756137A (en) * | 2021-09-23 | 2021-12-07 | 哈尔滨工业大学 | Anti-frost heaving-seismic reduction and isolation roadbed for high-speed railway in cold region |
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