CN102503283A - High-performance concrete and preparation method thereof - Google Patents
High-performance concrete and preparation method thereof Download PDFInfo
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- CN102503283A CN102503283A CN2011103529530A CN201110352953A CN102503283A CN 102503283 A CN102503283 A CN 102503283A CN 2011103529530 A CN2011103529530 A CN 2011103529530A CN 201110352953 A CN201110352953 A CN 201110352953A CN 102503283 A CN102503283 A CN 102503283A
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Abstract
The invention discloses high-performance concrete, which comprises the following components of: gelled materials, sand, gravels or cobbles, a water reducing agent, a cement modifier and water, wherein the using amount of the gelled materials is between 200 and 500 kg/m<3>, a ratio of water to gel is (0.24-0.6):1, and a sand ratio is between 30 and 45 percent; the water reducing agent is a naphthalene high-efficiency water reducing agent in an amount which is 0.3 to 1.5 percent of the weight of the gelled materials or a polycarboxylic high-performance water reducing agent in an amount which is 0.1 to 0.5 percent of the weight of the gelled materials; and the mixing amount of the cement modifier is 0.2 to 1.0 percent of the weight of the water reducing agent. According to the high-performance concrete, by reasonable ratios among the components, the using amount of cement in the concrete per cube can be reduced by 10 to 50 kilograms on the premise of ensuring the strength grade of the required concrete, so that the production cost of the concrete is reduced.
Description
Technical field
The present invention relates to a kind of common or high-strength high-performance concrete and preparation method thereof.
Background technology
Existence, development, profit are the consistent targets of pursuing of enterprise, reinforce cost management, and profit maximization is enterprise's Eternal Theme.How concrete as most widely used in the world structured material at present, reduces its production cost as far as possible under the prerequisite that guarantees its performance, be one of focus of paying close attention to of concrete and goods producer thereof always.For available coagulation soil proportioning, cement cost accounts for the nearly 40%～70% of concrete production cost, therefore, how under the prerequisite that guarantees concrete performance, to reduce cement cost and becomes the key point that reduces the concrete cost.In addition, in concrete and goods thereof, reduce cement consumption, can reduce resource consumption and save energy, and can reduce the quantity discharged of oxynitride, oxysulfide and oxycarbide etc., have good society and economic benefit.
Summary of the invention
Goal of the invention: the objective of the invention is to deficiency, provide a kind of can reaching to reduce cost, can improve the high performance concrete of performance simultaneously again through the reduction cement consumption to prior art.
Another object of the present invention is to provide the preparation method of this high performance concrete.
Technical scheme: high performance concrete of the present invention comprises following component: gelling material, sand, rubble or cobble, water reducer, cement modification agent and water; Wherein, the proportioning between the component described in the present invention can be confirmed by following parameter: said gel material content is 200～500kg/m
3Water-cement ratio is 0.24～0.6; Sand coarse aggregate ratio is 30～45%, and said water reducer is naphthalene series high-efficiency water-reducing agent or high performance water reducing agent of polyocarboxy acid, and said naphthalene series high-efficiency water-reducing agent volume is 0.3%～1.5% of a said gelling material weight; Said high performance water reducing agent of polyocarboxy acid volume is 0.1～0.5% of a said gelling material weight, and the volume of said cement modification agent is 0.2%～1.0% of a water reducer weight.Wherein, concrete unit weight parameter is confirmed by the user according to the situation of different areas voluntarily.
Said gelling material is made up of 55～100% cement and 0～45% adulterant by weight percentage, and said adulterant is any one or two kinds in levigate sand, breeze or the flyash.Said cement is that strength grade is not less than 32.5 the general purpose portland cement that meets the GB175 standard.
Preferably, the specific surface area of said gelling material is 300～500m
2/ kg.
Preferably, the particle diameter of said rubble or cobble is 5～25mm or 5～31.5mm continuous grading, and crush values is less than 10%, and the faller gill shape is less than 10%.
Preferably, the fineness modulus of said sand is 2.0～3.5, silt content≤1.0%.
The preparation method of high performance concrete of the present invention comprises the steps:
(1) gelling material and sand are added in the stirrer, stir 10～40s;
(2) in stirrer, add entry, stir 10～30s, add rubble or cobble again;
(3) with after cement modification agent and the water reducer mixing, join again in the stirrer, continue to stir;
(4) treat that all material all adds stirrer after, stir discharging behind 90～180s only.
The present invention compared with prior art; Its beneficial effect is: 1, the concrete slump that makes of the present invention is 10～200mm; Have required flowability under good water-retentivity, glutinous gathering property and the different operating condition, after the certain condition maintenance, can reach required strength grade of concrete; 2, concrete of the present invention, can make cement consumption minimizing 10～50kg in every side's concrete, thereby reduce the concrete production cost under the prerequisite that guarantees required strength grade of concrete through the rational proportion between each component; 3, product of the present invention on the one hand, has improved concrete serviceability through rational proportion between each component and reasonable preparation technology, for pump concrete, can make transfer pressure reduce by 10%; On the other hand,, effectively reduced the capillary-size pore rate, can improve early strength and make the later strength sustainable growth because of the hydration reaction that makes cement carries out more fully.In addition, add the cement modification agent of proper ratio after, can effectively get rid of contained cl ions, prevent steel bar corrosion, and good freeze proof effect arranged, be convenient under the low temperature environment construction and carry out smoothly; 4, in Cement Production and use; Can give off the material that environment is polluted inevitably; The present invention is through the rational proportion between each component; Make cement consumption minimizing in every side's concrete, promptly reduced the quantity discharged of oxynitride, oxysulfide and oxycarbide etc., aspect energy-conserving and environment-protective, active effect is arranged.
Embodiment
Be elaborated in the face of technical scheme of the present invention down, but protection scope of the present invention is not limited to said embodiment.
Embodiment 1: the preparation method of the common high performance concrete of the present invention may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 10s;
B, in stirrer, add entry then, stir 15s, add rubble;
C, in stirrer, add the water reducer added the cement modification agent again, continue to stir;
D, all raw materials are all added stirrer after, stir 90s only, discharging.
Normal concrete (C30 level) is made up of gelling material, sand, rubble, water reducer, cement modification agent and water.Concrete density is made as 2350kg/m
3, gelling material is the composite Portland cement of 32.5 strength grades, consumption is 200kg/m
3, specific surface area is 300m
2/ kg, water-cement ratio are 0.6, and the fineness modulus of sand is 2.6; Sand coarse aggregate ratio is 30%, and rubble is 5～31.5mm continuous grading, and crush values is 8%; The faller gill shape is 7%, and water reducer is a naphthalene series high-efficiency water-reducing agent, and said naphthalene series high-efficiency water-reducing agent volume is 0.30% of a said gelling material weight; The cement modification agent originates from Shen Yang Science and Technology Ltd., and model is: SY-II; Be a kind of white microfilament transparent liquid, proportion is 0.90～1.10, and volume is 0.2%, and its action principle is: the flood tide particle of release, with light velocity operation, break up molecular surface tension force in moment, thereby impel the cement aquation performance that reaches capacity.The slump of the concrete material that present embodiment makes is 80mm, and it is 34MPa that the 28d mark is supported intensity.
Comparative Examples 1:: do not add the preparation method of the common high performance concrete of cement modification agent, may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 10s;
B, in stirrer, add entry then, stir 15s, add rubble;
C, in stirrer, add water reducer again, continue to stir;
D, all raw materials are all added stirrer after, stir 90s only, discharging.
Normal concrete (C30 level) is made up of gelling material, sand, rubble, water reducer and water.Concrete density is made as 2350kg/m
3, gelling material is the composite Portland cement of 32.5 strength grades, consumption is 220kg/m
3, specific surface area is 300m
2/ kg, water-cement ratio are 0.6, and the fineness modulus of sand is 2.6; Sand coarse aggregate ratio is 30%, and rubble is 5～31.5mm continuous grading, and crush values is 8%; The faller gill shape is 7%, and water reducer is a naphthalene series high-efficiency water-reducing agent, and said naphthalene series high-efficiency water-reducing agent volume is 0.30% of a said gelling material weight.The slump of the concrete material that present embodiment makes is 90mm, and it is 32MPa that the 28d mark is supported intensity.
Embodiment 1 can know with Comparative Examples 1 both contrasts: the present invention is through the cement modification agent of interpolation appropriate dose and under the preparation condition of above-mentioned steps; The concrete that makes same size can be practiced thrift gelling material 20kg for every cube, and the concrete performance that makes is more superior.
Embodiment 2: the preparation method of the common high performance concrete of the present invention may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 15s;
B, in stirrer, add entry then, stir 10s, add cobble;
C, in stirrer, add the water reducer added the cement modification agent again, continue to stir;
D, all raw materials are all added stirrer after, stir 150s only, discharging.
Normal concrete (C50 level) is made up of gelling material, sand, cobble, water reducer, cement modification agent and water.Concrete density is made as 2400kg/m
3, gelling material is made up of cement and adulterant, and the total consumption of gelling material is 320kg/m
3, adulterant is a flyash, accounts for 12% of gel material content by weight percentage, the specific surface area of flyash is 400m
2/ kg, cement are the ordinary Portland cement of 42.5 strength grades, and specific surface area is 350m
2/ kg, water-cement ratio are 0.45, and the fineness modulus of sand is 3.4; Sand coarse aggregate ratio is 38%, and cobble is 5～31.5mm continuous grading, and crush values is 5%; The faller gill shape is 5%, and water reducer is a high performance water reducing agent of polyocarboxy acid, and high performance water reducing agent of polyocarboxy acid is 0.10% of a said gelling material weight; Cement modification agent volume is 0.3%, originates from Shen Yang Science and Technology Ltd., and model is: SY-II.The slump of the concrete material that present embodiment makes is 70mm, and it is 60MPa that the 28d mark is supported intensity.
Comparative Examples 2: do not add the preparation method of the common high performance concrete of cement modification agent, may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 15s;
B, in stirrer, add entry then, stir 10s, add cobble;
C, in stirrer, add water reducer again, continue to stir;
D, all raw materials are all added stirrer after, stir 150s only, discharging.
Normal concrete (C50 level) is made up of gelling material, sand, cobble, water reducer and water.Concrete density is made as 2400kg/m
3, gelling material is made up of cement and adulterant, and the total consumption of gelling material is 350kg/m
3, adulterant is a flyash, accounts for 12% of gel material content by weight percentage, the specific surface area of flyash is 400m
2/ kg, cement are the ordinary Portland cement of 42.5 strength grades, and specific surface area is 350m
2/ kg, water-cement ratio are 0.45, and the fineness modulus of sand is 3.4; Sand coarse aggregate ratio is 38%, and cobble is 5～31.5mm continuous grading, and crush values is 5%; The faller gill shape is 5%, and water reducer is a high performance water reducing agent of polyocarboxy acid, and high performance water reducing agent of polyocarboxy acid is 0.10% of a said gelling material weight.The slump of the concrete material that present embodiment makes is 70mm, and it is 52MPa that the 28d mark is supported intensity.
Embodiment 2 can know with Comparative Examples 2 both contrasts: the present invention is through the cement modification agent of interpolation appropriate dose and under the preparation condition of above-mentioned steps; The concrete that makes same size can be practiced thrift gelling material 30kg for every cube, and the concrete performance that makes is more superior.
Embodiment 3: the preparation method of high-strength high-performance concrete of the present invention may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 40s;
B, in stirrer, add entry then, stir 15s, add cobble;
C, in stirrer, add the water reducer added the cement modification agent again, continue to stir;
D, all raw materials are all added stirrer after, stir 150s only, discharging.
High-strength high-performance concrete (C80 level) is made up of gelling material, sand, rubble, water reducer, modification agent and water.Concrete density is made as 2450kg/m
3, gelling material is made up of cement and adulterant, and the total consumption of gelling material is 410kg/m
3, adulterant is the mixture of levigate sand and breeze, and this mixture accounts for 30% of gel material content by weight percentage, and the specific surface area of Additive is 380～420m
2/ kg, cement are the silicate cement of 42.5 strength grades, and specific surface area is 420m
2/ kg, water-cement ratio are 0.29, and the fineness modulus of sand is 2.5, and sand coarse aggregate ratio is 35%; Cobble is 5～25mm continuous grading, and crush values is 6%, and the faller gill shape is 5%; Water reducer is a naphthalene series high-efficiency water-reducing agent, and naphthalene series high-efficiency water-reducing agent is 1.5% of a said gelling material weight, and cement modification agent volume is 0.8%; Originate from Shen Yang Science and Technology Ltd., model is: SY-II.The slump of the concrete material that present embodiment makes is 40mm, and the steam-cured intensity of normal pressure is 55MPa, and high-pressure steaming and cultivating intensity is 96MPa.
Comparative Examples 3: do not add the preparation method of the high-strength high-performance concrete of cement modification agent, may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 40s;
B, in stirrer, add entry then, stir 15s, add cobble;
C, in stirrer, add water reducer again, continue to stir;
D, all raw materials are all added stirrer after, stir 150s only, discharging.
High-strength high-performance concrete (C80 level) is made up of gelling material, sand, rubble, water reducer and water.Concrete density is made as 2450kg/m
3, gelling material is made up of cement and adulterant, and the total consumption of gelling material is 450kg/m
3, adulterant is the mixture of levigate sand and breeze, and this mixture accounts for 30% of gel material content by weight percentage, and the specific surface area of Additive is 380～420m
2/ kg, cement are the silicate cement of 42.5 strength grades, and specific surface area is 420m
2/ kg, water-cement ratio are 0.29, and the fineness modulus of sand is 2.5, and sand coarse aggregate ratio is 35%; Cobble is 5～25mm continuous grading, and crush values is 6%, and the faller gill shape is 5%, and water reducer is a naphthalene series high-efficiency water-reducing agent, and naphthalene series high-efficiency water-reducing agent is 1.5% of a said gelling material weight.The slump of the concrete material that present embodiment makes is 40mm, and the steam-cured intensity of normal pressure is 50MPa, and high-pressure steaming and cultivating intensity is 90MPa.
Embodiment 3 can know with Comparative Examples 3 both contrasts: the present invention is through the cement modification agent of interpolation appropriate dose and under the preparation condition of above-mentioned steps; The concrete that makes same size can be practiced thrift gelling material 40kg for every cube, and the concrete performance that makes is more superior.
Embodiment 4: the preparation method of high-strength high-performance concrete of the present invention may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 20s;
B, in stirrer, add entry then, stir 15s, add rubble;
C, in stirrer, add water reducer, modification agent simultaneously again, continue to stir;
D, all raw materials are all added stirrer after, stir 180s only, discharging.
High-strength high-performance concrete (C100 level) is made up of gelling material, sand, rubble, water reducer, modification agent and water.Concrete density is made as 2500kg/m
3, gelling material is made up of cement and adulterant, and the total consumption of gelling material is 500kg/m
3, adulterant is the mixture of levigate sand and breeze, and this mixture accounts for 45% of gel material content by weight percentage, and the specific surface area of Additive is 460～480m
2/ kg, cement are the silicate cement of 52.5 strength grades, and specific surface area is 500m
2/ kg, water-cement ratio are 0.40, and the fineness modulus of sand is 2.1, and sand coarse aggregate ratio is 44%; Rubble is 5～25mm continuous grading, and crush values is 4%, and the faller gill shape is 6%; Water reducer is a high performance water reducing agent of polyocarboxy acid, and high performance water reducing agent of polyocarboxy acid is 0.5% of a said gelling material weight, and cement modification agent volume is 1.0%; Originate from Shen Yang Science and Technology Ltd., model is: SY-II.The slump of the concrete material that present embodiment makes is 200mm, and the steam-cured intensity of normal pressure is 58MPa, and high-pressure steaming and cultivating intensity is 112MPa.
Comparative Examples 4: do not add the preparation method of the high-strength high-performance concrete of cement modification agent, may further comprise the steps:
A, elder generation add sand, gelling material in stirrer, stir 20s;
B, in stirrer, add entry then, stir 15s, add rubble;
C, in stirrer, add water reducer simultaneously again, continue to stir;
D, all raw materials are all added stirrer after, stir 180s only, discharging.
High-strength high-performance concrete (C100 level) is made up of gelling material, sand, rubble, water reducer and water.Concrete density is made as 2500kg/m
3, gelling material is made up of cement and adulterant, and the total consumption of gelling material is 550kg/m
3, adulterant is the mixture of levigate sand and breeze, and this mixture accounts for 45% of gel material content by weight percentage, and the specific surface area of Additive is 460～480m
2/ kg, cement are the silicate cement of 52.5 strength grades, and specific surface area is 500m
2/ kg, water-cement ratio are 0.40, and the fineness modulus of sand is 2.1, and sand coarse aggregate ratio is 44%; Rubble is 5～25mm continuous grading, and crush values is 4%, and the faller gill shape is 6%, and water reducer is a high performance water reducing agent of polyocarboxy acid, and high performance water reducing agent of polyocarboxy acid is 0.5% of a said gelling material weight.The slump of the concrete material that present embodiment makes is 200mm, and the steam-cured intensity of normal pressure is 55MPa, and high-pressure steaming and cultivating intensity is 106MPa.
Embodiment 4 can know with Comparative Examples 4 both contrasts: the present invention is through the cement modification agent of interpolation appropriate dose and under the preparation condition of above-mentioned steps; The concrete that makes same size can be practiced thrift gelling material 50kg for every cube, and the concrete performance that makes is more superior.
As stated, although represented and explained the present invention that with reference to specific preferred embodiment it shall not be construed as the restriction to the present invention self.Under the spirit and scope of the present invention prerequisite that does not break away from the accompanying claims definition, can make various variations in form with on the details to it.
Claims (6)
1. a high performance concrete is characterized in that comprising following component: gelling material, sand, rubble or cobble, water reducer, cement modification agent and water; Wherein, said gel material content is 200～500kg/m
3Water-cement ratio is 0.24～0.6; Sand coarse aggregate ratio is 30～45%, and said water reducer is naphthalene series high-efficiency water-reducing agent or high performance water reducing agent of polyocarboxy acid, and said naphthalene series high-efficiency water-reducing agent volume is 0.3%～1.5% of a said gelling material weight; Said high performance water reducing agent of polyocarboxy acid volume is 0.1～0.5% of a said gelling material weight, and the volume of said cement modification agent is 0.2%～1.0% of a water reducer weight.
2. high performance concrete according to claim 1; It is characterized in that: said gelling material is made up of 55～100% cement and 0～45% adulterant by weight percentage, and said adulterant is any one or two kinds in levigate sand, breeze or the flyash.
3. high performance concrete according to claim 1 is characterized in that: the specific surface area of said gelling material is 300～500m
2/ kg.
4. high performance concrete according to claim 1 is characterized in that: the particle diameter of said rubble or cobble is 5～25mm or 5～31.5mm continuous grading, and crush values is less than 10%, and the faller gill shape is less than 10%.
5. high performance concrete according to claim 1 is characterized in that: the fineness modulus of said sand is 2.0～3.5, silt content≤1.0%.
6. according to the preparation method of the described high performance concrete of arbitrary claim in the claim 1～5, it is characterized in that comprising the steps:
(1) gelling material and sand are added in the stirrer, stir 10～40s;
(2) in stirrer, add entry, stir 10～30s, add rubble or cobble again;
(3) with after cement modification agent and the water reducer mixing, join again in the stirrer, continue to stir;
(4) treat that all material all adds stirrer after, stir discharging behind 90～180s only.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690090A (en) * | 2012-06-21 | 2012-09-26 | 江苏建华管桩有限公司 | Concrete doped with cement modification agent and preparation method for concrete |
| CN102701682A (en) * | 2012-06-29 | 2012-10-03 | 江苏建华管桩有限公司 | Pump concrete, pump concrete precast pile and production methods of pump concrete and pump concrete precast pile |
| CN104478328A (en) * | 2014-12-08 | 2015-04-01 | 武汉理工大学 | High-performance concrete prepared from antimony ore smelting slag and preparation method of high-performance concrete |
| CN104478325A (en) * | 2014-11-28 | 2015-04-01 | 沈阳大学 | C90-grade self-compaction high-strength concrete and preparation method thereof |
| CN106630901A (en) * | 2016-12-16 | 2017-05-10 | 广西金洪混凝土有限公司 | Green high-performance concrete |
| CN110655362A (en) * | 2019-09-28 | 2020-01-07 | 北京金隅混凝土有限公司 | Inclined roof concrete composition and preparation method thereof |
| CN112537925A (en) * | 2020-11-25 | 2021-03-23 | 中铁十六局集团路桥工程有限公司 | High-performance concrete applying machine-made sand |
| CN112592137A (en) * | 2020-12-31 | 2021-04-02 | 湖南贵庭住宅工业集团有限公司 | High-performance concrete and preparation method thereof |
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| CN101121586A (en) * | 2007-07-19 | 2008-02-13 | 北京东方建宇混凝土科学技术研究院有限公司 | C100 high-performance concrete and formulation method thereof |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101121586A (en) * | 2007-07-19 | 2008-02-13 | 北京东方建宇混凝土科学技术研究院有限公司 | C100 high-performance concrete and formulation method thereof |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690090A (en) * | 2012-06-21 | 2012-09-26 | 江苏建华管桩有限公司 | Concrete doped with cement modification agent and preparation method for concrete |
| CN102701682A (en) * | 2012-06-29 | 2012-10-03 | 江苏建华管桩有限公司 | Pump concrete, pump concrete precast pile and production methods of pump concrete and pump concrete precast pile |
| CN102701682B (en) * | 2012-06-29 | 2014-02-26 | 江苏建华管桩有限公司 | Pump concrete, pump concrete precast pile and production methods of pump concrete and pump concrete precast pile |
| CN104478325A (en) * | 2014-11-28 | 2015-04-01 | 沈阳大学 | C90-grade self-compaction high-strength concrete and preparation method thereof |
| CN104478328A (en) * | 2014-12-08 | 2015-04-01 | 武汉理工大学 | High-performance concrete prepared from antimony ore smelting slag and preparation method of high-performance concrete |
| CN106630901A (en) * | 2016-12-16 | 2017-05-10 | 广西金洪混凝土有限公司 | Green high-performance concrete |
| CN106630901B (en) * | 2016-12-16 | 2019-06-28 | 广西金洪混凝土有限公司 | Green high performance concrete |
| CN110655362A (en) * | 2019-09-28 | 2020-01-07 | 北京金隅混凝土有限公司 | Inclined roof concrete composition and preparation method thereof |
| CN110655362B (en) * | 2019-09-28 | 2021-09-07 | 北京金隅混凝土有限公司 | Inclined roof concrete composition and preparation method thereof |
| CN112537925A (en) * | 2020-11-25 | 2021-03-23 | 中铁十六局集团路桥工程有限公司 | High-performance concrete applying machine-made sand |
| CN112592137A (en) * | 2020-12-31 | 2021-04-02 | 湖南贵庭住宅工业集团有限公司 | High-performance concrete and preparation method thereof |
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Application publication date: 20120620 |