CN104045280B - A kind of C120 super high strength concrete that is easy to super high-rise pumping - Google Patents
A kind of C120 super high strength concrete that is easy to super high-rise pumping Download PDFInfo
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- CN104045280B CN104045280B CN201410253540.0A CN201410253540A CN104045280B CN 104045280 B CN104045280 B CN 104045280B CN 201410253540 A CN201410253540 A CN 201410253540A CN 104045280 B CN104045280 B CN 104045280B
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Abstract
The invention discloses a kind of C120 super high strength concrete that is easy to super high-rise pumping. Described super high strength concrete includes cement, rice hull ash, breeze, flyash, sand, rubble, additive and water. Super high strength concrete of the present invention can prepare by existing conventional method, this super high strength concrete 28d compression strength has reached C120 strength grade, the slump is greater than 250mm, divergence is greater than 650mm, 2h slump-loss is less than 20mm, can meet the requirement of high-rise building pumping construction, has strength grade high, viscosity is low, is applicable to the feature of super high-rise pumping.
Description
Technical field
The invention belongs to building material field, be specifically related to a kind of C120 super high strength concrete that is easy to super high-rise pumping.
Background technology
Along with the development of modern architecture, the quantity of high-rise building is more and more, and these high-rise buildings need on the one handConcrete used has the strength grade of superelevation, needs on the other hand concrete to have good service behaviour, directly pumpingTo higher vertical height. Therefore be necessary to develop specially this superhigh intensity, low viscosity and the good concrete of pump-conveying property.
Chinese patent (201310670490.1) discloses a kind of " mean intensity 120MPa superelevation of low viscosity, easy pumpingReinforced concrete ", this concrete has high-strength performance, high function of slump protection and low viscosity performance, and mean intensity reaches 120MPa, and 4 is littleTime in divergence remain on 700mm ± 50mm, the back taper time is controlled at 3s～8s, is suitable for the coagulation of 300m and above height thereofSoil pumping. Above-mentioned concrete mean intensity has reached 120MPa, but its intensity does not reach C120 strength grade.
Summary of the invention
For solving the shortcoming and defect part of prior art, the object of the invention is to the theoretical one that proposes of mineral diminishingThe C120 super high strength concrete that is easy to super high-rise pumping, this concrete prepares with conventional method, viscosity is low, be easy to 400m withUpper super high pump-conveying, and strength grade reaches C120.
For achieving the above object, the present invention adopts following technical scheme:
A C120 super high strength concrete that is easy to super high-rise pumping, described super high strength concrete includes cement, rice huskAsh, breeze, flyash, sand, rubble, additive and water, wherein said rubble is that particle diameter is 10～20mm and 5～10mm simple grainLevel rubble, the folk prescription consumption proportion (kg/m of each composition3) as follows:
Preferably, the folk prescription consumption proportion (kg/m of the each composition of described super high strength concrete3) as follows:
Preferably, the folk prescription consumption proportion (kg/m of the each composition of described super high strength concrete3) as follows:
Preferably, the folk prescription consumption proportion (kg/m of the each composition of described super high strength concrete3) as follows:
Preferably, the folk prescription consumption proportion (kg/m of the each composition of described super high strength concrete3) as follows:
Preferably, described cement is P. II 52.5 portland cements; Described rice hull ash is the rice husk of 600 DEG C of low-firingsAsh; Described breeze is S95 level breeze; Described flyash is I level flyash; Described sand is natural river sand; Described rubble is flowerHilllock rock rubble; Described additive is high-efficiency water-reducing agent of poly-carboxylic acid.
Break-through point of the present invention is to make concrete intensity to reach C120 strength grade, concrete 28d pressure resistanceDegree is greater than 130MPa. Adopt efficient additive, mineral diminishing, best sand coarse aggregate ratio and flyash to help the measures such as pump strong to superelevation simultaneouslyConcrete pumpable performance is improved, and particularly adopts mineral diminishing theory to instruct, at polycarboxylic acid super plasticizer significantlyUltralow water-cement ratio after degree diminishing mixes and stirs system, adopts slag, flyash, silicon ash to carry out particle combination, further does effectivelyMineral diminishing.
Compared with prior art, the present invention has the following advantages and beneficial effect:
Super high strength concrete of the present invention can prepare by existing conventional method, and this super high strength concrete meets superelevationThe requirement of layer building pumping construction, has strength grade high, and viscosity is low, is applicable to the feature of super high-rise pumping. Its 28d compression strengthReached C120 strength grade, the slump is greater than 250mm, and divergence is greater than 650mm, and 2h slump-loss is less than 20mm.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Cement described in the embodiment of the present invention is golden sheep board P. II 52.5 portland cements; Rice hull ash is that rice hull ash isThe rice hull ash of 600 DEG C of low-firings; Breeze is Liu Gang S95 level breeze; Flyash is I level flyash; Sand is Xijiang River high-quality IIDistrict's natural river sand; Rubble is that Zhuhai Shi Chang high-quality granite particle diameter is 10～20mm and 5～10mm simple grain level rubble; Additive isKe Jie KJ-JS high-efficiency water-reducing agent of poly-carboxylic acid.
Concrete prepared by the embodiment of the present invention and comparative example is according to " standard for test methods of mechanical properties of ordinary concrete "(GB/T50081-2002) method in is tested concrete mechanical property.
Embodiment 1
A C120 super high strength concrete for easy pumping super high-rise pumping, this concrete folk prescription consumption proportion is as table 1Show:
Proportioning (the kg/m of table 1C120 super high strength concrete3)
According to said ratio, prepare described super high strength concrete according to conventional method, prepared superelevation is mixed by forceSolidifying native service behaviour and compression strength are as shown in table 2:
Service behaviour and the compression strength of table 2C120 super high strength concrete
From the data of table 2, prepared C120 super high strength concrete meets that superelevation is strong, low viscosity and super high-rise pumpingThe condition of construction.
Embodiment 2
A C120 super high strength concrete for easy pumping super high-rise pumping, this concrete folk prescription consumption proportion is as table 3Show:
Proportioning (the kg/m of table 3C120 super high strength concrete3)
According to said ratio, prepare described super high strength concrete according to conventional method, prepared superelevation is mixed by forceSolidifying native service behaviour and compression strength are as shown in table 4:
Service behaviour and the compression strength of table 4C120 super high strength concrete
From the data of table 4, prepared C120 super high strength concrete meets that superelevation is strong, low viscosity and super high-rise pumpingThe condition of construction.
Embodiment 3
A C120 super high strength concrete for easy pumping super high-rise pumping, this concrete folk prescription consumption proportion is as table 5Show:
Proportioning (the kg/m of table 5C120 super high strength concrete3)
According to said ratio, prepare described super high strength concrete according to conventional method, prepared superelevation is mixed by forceSolidifying native service behaviour and compression strength are as shown in table 6:
Service behaviour and the compression strength of table 6C120 super high strength concrete
From the data of table 6, prepared C120 super high strength concrete meets that superelevation is strong, low viscosity and super high-rise pumpingThe condition of construction.
Above-described embodiment is preferably embodiment of the present invention, but embodiments of the present invention are not subject to above-described embodimentRestriction, other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplification,All should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (5)
1. a C120 super high strength concrete that is easy to super high-rise pumping, is characterized in that, described super high strength concrete includesCement, rice hull ash, breeze, flyash, sand, rubble, additive and water, wherein said rubble is that particle diameter is 10～20mm and 5～10mm simple grain level rubble, the folk prescription consumption proportion (kg/m of each composition3) as follows:
Described cement is P. II 52.5 portland cements; Described rice hull ash is 600 DEG C of rice hull ash of firing; Described breeze is S95Level breeze; Described flyash is I level flyash; Described sand is natural river sand; Described rubble is granite stones; Described additionalAgent is high-efficiency water-reducing agent of poly-carboxylic acid.
2. super high strength concrete according to claim 1, is characterized in that, the folk prescription of the each composition of described super high strength concreteConsumption proportion (kg/m3) as follows:
3. super high strength concrete according to claim 1, is characterized in that, the folk prescription of the each composition of described super high strength concreteConsumption proportion (kg/m3) as follows:
4. super high strength concrete according to claim 1, is characterized in that, the folk prescription of the each composition of described super high strength concreteConsumption proportion (kg/m3) as follows:
5. super high strength concrete according to claim 1, is characterized in that, the folk prescription of the each composition of described super high strength concreteConsumption proportion (kg/m3) as follows:
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| CN201410253540.0A CN104045280B (en) | 2014-06-09 | 2014-06-09 | A kind of C120 super high strength concrete that is easy to super high-rise pumping |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105503054A (en) * | 2015-12-24 | 2016-04-20 | 邢台建工商品混凝土有限公司 | Ultrahigh-strength concrete with ultrahigh pumping performance and preparation method of ultrahigh-strength concrete |
| CN106007501A (en) * | 2016-05-19 | 2016-10-12 | 中国三冶集团有限公司 | Pump concrete 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 |
| CN105924107A (en) * | 2016-06-22 | 2016-09-07 | 中国三冶集团有限公司 | Pumped concrete |
| CN108101425A (en) * | 2016-11-24 | 2018-06-01 | 嘉兴市东锦混凝土有限公司 | Concrete and preparation method thereof |
| CN108147746A (en) * | 2017-12-29 | 2018-06-12 | 中建西部建设贵州有限公司 | A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping |
| CN108191337A (en) * | 2018-01-24 | 2018-06-22 | 暨南大学 | A kind of concrete prepared using artificial sand and mountain flour |
| CN114605114A (en) * | 2022-03-07 | 2022-06-10 | 中交路桥建设有限公司 | High-strength white concrete with whiteness larger than 85 |
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| JPH04124054A (en) * | 1990-09-14 | 1992-04-24 | Jdc Corp | Superhigh-strength concrete |
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