CN102320802A - Steel-fiber ultrahigh-strength self-compacting concrete - Google Patents
Steel-fiber ultrahigh-strength self-compacting concrete Download PDFInfo
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- CN102320802A CN102320802A CN201110247278A CN201110247278A CN102320802A CN 102320802 A CN102320802 A CN 102320802A CN 201110247278 A CN201110247278 A CN 201110247278A CN 201110247278 A CN201110247278 A CN 201110247278A CN 102320802 A CN102320802 A CN 102320802A
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Abstract
The invention discloses steel-fiber ultrahigh-strength self-compacting concrete, which comprises the following components in parts by weight: 100 parts of gelled material, 107-133 parts of crushed limestone with the grain diameter being 5-20mm, 100-114 parts of medium sand, 22-23 parts of water and 1.5-2.5 parts of high-efficiency water-reducing agent, wherein the gelled material comprises 5-10 parts of siliceous dust, 17-25 parts of S95-grade slag powder and 65-78 parts of ordinary silicate cement; and the steel-fiber ultrahigh-strength self-compacting concrete also comprises steel fibers with the volume content accounting for 0.3-0.9 percent of the total volume of the concrete. The steel-fiber ultrahigh-strength self-compacting concrete disclosed by the invention is the perfect combination of ultrahigh-strength concrete, fiber concrete and self-compacting concrete, the technical blank of the ultrahigh-strength self-compacting concrete is filled, and a positive promoting action is performed for the design and the construction technology development of new materials and novel structures in the field of civil engineering.
Description
Technical field
The present invention relates to building material field, especially relate to a kind of steel fiber superelevation strong strength self-compaction concrete.
Background technology
The development of modern construction engineering is increasingly high to concrete performance requriements.High-strength and super high strength concrete has greatly improved mechanical properties of concrete and weather resistance.But, along with improving constantly of strength grade of concrete, thereupon also exposing some problems, wherein distinct issues are that concrete strength is high more, the fragility of material is just big more, super high strength concrete even the explosion breakoff phenomenon occurs.In order to overcome this shortcoming, a valid approach is that adding of fiber is to increase its toughness; Simultaneously; In practice of construction; Noise when reducing concrete placement; Improve speed of application and quality, solve the difficult engineering roadblock that vibrates such as overstocked arrangement of reinforcement and complex object, the preparation of self-compacting concrete and application technical research have become one of the key content in domestic and international concrete scientific research field.
Yet overcome fragility and add for the high-strength concrete of steel fiber for needs, in engineering, be difficult to realize the self-compacting ability requirement at present.The steel fiber self-compacting concrete of successful Application strength grade CF60 in the present actual engineering; Utilize polypropylene fibre and alkali resistant glass fibre also can make strength grade and be the fiber self-dense concrete below the CF80; But intensity surpasses CF80, and the concrete that satisfies the self-compacting ability requirement still belongs to the domestic technique blank.
To above-mentioned blank technical field, need develop the steel fiber superelevation strong strength self-compaction concrete that a kind of strength grade reaches CF90, to satisfy industrial requirements such as special industry.
Summary of the invention
In view of this, the purpose of this invention is to provide steel fiber superelevation strong strength self-compaction concrete, fill up the concrete technological gap of superelevation strong strength self-compaction of present existence, satisfy of the requirement of special industry field fiber reinforced concrete superstrength and self compacting ability.
The objective of the invention is to realize through following technical scheme: a kind of steel fiber superelevation strong strength self-compaction concrete comprises following component: 100 parts of gelling material by weight; 107 ~ 133 parts of the Wingdale rubbles of particle diameter 5 ~ 20 mm, 100 ~ 114 parts of medium sands, 22 ~ 23 parts in water, 1.5～2.5 parts of high efficiency water reducing agents; Wherein, said gelling material comprises 5 ~ 10 parts of silicon ashes, 17～25 parts of S95 grade slag powders, 65 ~ 78 parts of ordinary Portland cements; Comprise that also the volume volume accounts for 0.3 ~ 0.9% steel fiber of concrete TV.
Further, said steel fiber superelevation strong strength self-compaction concrete comprises following component by weight: 10 parts of silicon ashes, 20 parts of S95 grade slag powders, 70 parts of ordinary Portland cements, 113 parts of the Wingdale rubbles of 5 ~ 20 mm, 104 parts of medium sands, 23 parts in water, 2 parts of high efficiency water reducing agents; Volume content of steel fibers is 0.6% of a concrete TV;
Further, the strength grade of said ordinary Portland cement is more than or equal to 42.5 grades;
Further, said steel fiber is the little steel fiber of copper facing of length 6 ~ 13mm.
Beneficial effect of the present invention: steel fiber superelevation strong strength self-compaction concrete of the present invention; It is super high strength concrete, fibrous concrete and self-compacting concrete three's perfect adaptation; Adopt proportioning raw materials of the present invention; Stir through conventional stirring technique, the steel fiber superelevation strong strength self-compaction concrete crushing strength that makes satisfies the CF90 technical requirements, Kang Zheqiangdu>11.0MPa, concrete mix slump divergence>=650mm, U type appearance △ h≤30mm, L type appearance H
2/ H
1>=0.80, reach self-compacting concrete I level index; Simultaneously; Steel fiber superelevation strong strength self-compaction concrete of the present invention is because of its excellent serviceability and mechanical property; Filled up the concrete technological gap of domestic superelevation strong strength self-compaction, positive pushing effect has been played in the design and construction technical development of field of civil engineering novel material and novel texture.
Embodiment
Embodiment one:
The steel fiber superelevation strong strength self-compaction concrete of present embodiment, every cubical component comprises: 35 kilograms of silicon ashes, 175 kilograms of S95 grade slag powders, 490 kilograms of normal silicate 42.5 cement; 800 kilograms of the Wingdale rubbles of particle diameter 5 ~ 20mm, 700 kilograms of medium sands, 155 kilograms in water, 10.5 kilograms of high efficiency water reducing agents; Comprise that also the volume volume accounts for the little steel fiber of copper facing of 0.3% (23.4 kilograms) length 13mm of concrete TV.Stir through conventional stirring technique after getting material, can make steel fiber superelevation strong strength self-compaction concrete of the present invention.
Embodiment two:
The steel fiber superelevation strong strength self-compaction concrete of present embodiment, every cubical component comprises: 65 kilograms of silicon ashes, 130 kilograms of S95 grade slag powders, 455 kilograms of normal silicate 42.5 cement; 865 kilograms of the Wingdale rubbles of particle diameter 5 ~ 20 mm, 740 kilograms of medium sands, 150 kilograms in water, 16.5 kilograms of high efficiency water reducing agents; Comprise that also the volume volume accounts for the little steel fiber of copper facing of length 6mm of 0.9% (70.2 kilograms) of concrete TV, stir through conventional stirring technique after getting material, can make CF90 steel fiber self-compacting concrete of the present invention.
Embodiment three:
The steel fiber superelevation strong strength self-compaction concrete of present embodiment, every cubical component comprises: 500 kilograms of P.O52.5 cement, 140 kilograms of S95 grade slag powders; 70 kilograms of silicon ashes; 14 kilograms of high efficiency water reducing agents, 46.8 kilograms of the little steel fibers of the copper facing of length 10mm, 160 kilograms in water; 801 kilograms of the rubbles of particle diameter 5 ~ 20mm, 739 kilograms of medium sands.Stir through conventional stirring technique after getting material, can make CF90 steel fiber self-compacting concrete of the present invention.
Embodiment four:
The steel fiber superelevation strong strength self-compaction concrete of present embodiment, every cubical component comprises: 60 kilograms of silicon ashes, 120 kilograms of S95 grade slag powders, 520 kilograms of 52.5 grades of ordinary Portland cements; 750 kilograms of the Wingdale rubbles of particle diameter 5 ~ 20 mm, 750 kilograms of medium sands, 160 kilograms in water, 16 kilograms of high efficiency water reducing agents; Comprise that also the volume volume accounts for the little steel fiber of copper facing of length 10mm of 0.6% (46.8 kilograms) of concrete TV, stir through conventional stirring technique after getting material, can make steel fiber superelevation strong strength self-compaction concrete of the present invention.
The steel fiber superelevation strong strength self-compaction concrete that above-mentioned six embodiment are made makes a service test, and specifically can get:
| Performance | Embodiment one | Embodiment two | Embodiment three | Embodiment four |
| Ultimate compression strength (MPa) | 98.1 | 98.6 | 102.6 | 105.8 |
| Folding strength (MPa) | 11.2 | 12.6 | 12.0 | 11.6 |
| Slump divergence (mm) | 653 | 660 | 680 | 685 |
| U type appearance △ h (mm) | 30 | 10 | 8 | 5 |
| L type appearance H 2/H 1 | 0.90 | 0.85 | 0.81 | 0.97 |
| Self compacting ability | The I level | The I level | The I level | The I level |
Can know by last table, superelevation strong strength self-compaction concrete of the present invention, ultimate compression strength all satisfies the CF90 technical requirements, Kang Zheqiangdu>11.0MPa, concrete mix slump divergence>=650mm, U type appearance △ h≤30mm, L type appearance H
2/ H
1>=0.80, reach self-compacting concrete I level index; Simultaneously; Steel fiber superelevation strong strength self-compaction concrete of the present invention is because of its excellent serviceability and mechanical property; Filled up the concrete technological gap of domestic superelevation strong strength self-compaction, positive pushing effect has been played in the design and construction technical development of field of civil engineering novel material and novel texture.
Explanation is at last; Above embodiment is only unrestricted in order to technical scheme of the present invention to be described; Although the present invention is specified with reference to preferred embodiment; But those of ordinary skill in the art makes amendment to technical scheme of the present invention or is equal to replacement, and does not break away from the aim and the scope of technical scheme of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (4)
1. a steel fiber superelevation strong strength self-compaction concrete is characterized in that: comprise following component by weight: 100 parts of gelling material; 107 ~ 133 parts of the Wingdale rubbles of particle diameter 5 ~ 20 mm, 100 ~ 114 parts of medium sands, 22 ~ 23 parts in water, 1.5～2.5 parts of high efficiency water reducing agents; Wherein, said gelling material comprises 5 ~ 10 parts of silicon ashes, 17～25 parts of S95 grade slag powders, 65 ~ 78 parts of ordinary Portland cements; Comprise that also the volume volume accounts for 0.3 ~ 0.9% steel fiber of concrete TV.
2. steel fiber superelevation strong strength self-compaction concrete according to claim 1; It is characterized in that: comprise following component by weight: 10 parts of silicon ashes, 20 parts of S95 grade slag powders, 70 parts of ordinary Portland cements; 113 parts of the Wingdale rubbles of 5 ~ 20 mm; 104 parts of medium sands, 23 parts in water, 2 parts of high efficiency water reducing agents; Volume content of steel fibers is 0.6% of a concrete TV.
3. steel fiber superelevation strong strength self-compaction concrete according to claim 1, it is characterized in that: the strength grade of said ordinary Portland cement is more than or equal to 42.5 grades.
4. steel fiber superelevation strong strength self-compaction concrete according to claim 1 is characterized in that: said steel fiber is the little steel fiber of the copper facing of length 6 ~ 13mm.
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| CN201110247278A CN102320802A (en) | 2011-08-24 | 2011-08-24 | Steel-fiber ultrahigh-strength self-compacting concrete |
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| CN201110247278A CN102320802A (en) | 2011-08-24 | 2011-08-24 | Steel-fiber ultrahigh-strength self-compacting concrete |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674760A (en) * | 2012-04-24 | 2012-09-19 | 本钢板材股份有限公司 | Composition for manufacturing explosion-proof concrete |
| CN102765912A (en) * | 2012-08-15 | 2012-11-07 | 中铁二十三局集团有限公司 | Self-compacting concrete and manufacture method thereof |
| CN103304206A (en) * | 2013-06-28 | 2013-09-18 | 深圳大学 | Ultrahigh-strength self-compacting concrete and preparation method thereof |
| CN103864385A (en) * | 2014-02-26 | 2014-06-18 | 郑州大学 | Self-compacting concrete of fiber-reinforced polymer for assembly hollow plate bridge hinge joint |
| CN103880368A (en) * | 2014-01-28 | 2014-06-25 | 招商局重庆交通科研设计院有限公司 | Steel fiber reinforced self-compacting concrete |
| CN105693155A (en) * | 2016-02-22 | 2016-06-22 | 中国水利水电第十工程局有限公司 | High-dispersion steel fiber reinforced concrete and construction technology thereof |
| CN106007544A (en) * | 2016-06-02 | 2016-10-12 | 耿云花 | Antibacterial building concrete production process |
| CN106522551A (en) * | 2016-11-18 | 2017-03-22 | 重庆建工住宅建设有限公司 | Steel fiber self-compacting concrete construction method for conversion layer |
| CN107522437A (en) * | 2016-06-22 | 2017-12-29 | 上海天利商品混凝土有限公司 | A kind of early strong steel fiber reinforced concrete of high-performance |
| CN108558315A (en) * | 2018-05-21 | 2018-09-21 | 成都建工预筑科技有限公司 | Novel precast construction load bearing heat preserving, sound isolating decorative wall and steel fiber reinforced concrete |
| CN111056780A (en) * | 2019-12-31 | 2020-04-24 | 上海城建建设实业集团新型建筑材料有限公司 | Self-compacting concrete additive, self-compacting concrete and preparation and application thereof |
| CN112012383A (en) * | 2020-09-15 | 2020-12-01 | 青岛理工大学 | Preparation method and application of load-bearing and heat-insulation integrated high-strength foam concrete rib-free prefabricated roof panel |
| CN112679162A (en) * | 2020-12-29 | 2021-04-20 | 江南大学 | Low-shrinkage ultrahigh-strength self-compacting concrete and preparation method thereof |
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| CN1934052A (en) * | 2004-02-13 | 2007-03-21 | 埃法日Tp公司 | Ultra-high-performance self-compacting concrete, its preparation method and uses |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102674760A (en) * | 2012-04-24 | 2012-09-19 | 本钢板材股份有限公司 | Composition for manufacturing explosion-proof concrete |
| CN102765912A (en) * | 2012-08-15 | 2012-11-07 | 中铁二十三局集团有限公司 | Self-compacting concrete and manufacture method thereof |
| CN103304206A (en) * | 2013-06-28 | 2013-09-18 | 深圳大学 | Ultrahigh-strength self-compacting concrete and preparation method thereof |
| CN103880368A (en) * | 2014-01-28 | 2014-06-25 | 招商局重庆交通科研设计院有限公司 | Steel fiber reinforced self-compacting concrete |
| CN103864385A (en) * | 2014-02-26 | 2014-06-18 | 郑州大学 | Self-compacting concrete of fiber-reinforced polymer for assembly hollow plate bridge hinge joint |
| CN103864385B (en) * | 2014-02-26 | 2016-05-04 | 郑州大学 | Assembled blank board bridge hinge seam fiber-reinforced polymer self-compacting concrete |
| CN105693155A (en) * | 2016-02-22 | 2016-06-22 | 中国水利水电第十工程局有限公司 | High-dispersion steel fiber reinforced concrete and construction technology thereof |
| CN106007544B (en) * | 2016-06-02 | 2019-03-08 | 湖州鸿鼎混凝土制品有限公司 | A kind of antibacterial building concrete manufacture craft |
| CN109336514A (en) * | 2016-06-02 | 2019-02-15 | 耿云花 | A kind of antibacterial building concrete manufacture craft |
| CN106007544A (en) * | 2016-06-02 | 2016-10-12 | 耿云花 | Antibacterial building concrete production process |
| CN109455995A (en) * | 2016-06-02 | 2019-03-12 | 耿云花 | A kind of antibacterial building concrete manufacture craft |
| CN107522437A (en) * | 2016-06-22 | 2017-12-29 | 上海天利商品混凝土有限公司 | A kind of early strong steel fiber reinforced concrete of high-performance |
| CN106522551A (en) * | 2016-11-18 | 2017-03-22 | 重庆建工住宅建设有限公司 | Steel fiber self-compacting concrete construction method for conversion layer |
| CN108558315A (en) * | 2018-05-21 | 2018-09-21 | 成都建工预筑科技有限公司 | Novel precast construction load bearing heat preserving, sound isolating decorative wall and steel fiber reinforced concrete |
| CN111056780A (en) * | 2019-12-31 | 2020-04-24 | 上海城建建设实业集团新型建筑材料有限公司 | Self-compacting concrete additive, self-compacting concrete and preparation and application thereof |
| CN111056780B (en) * | 2019-12-31 | 2022-04-08 | 上海城建建设实业集团新型建筑材料嘉兴有限公司 | Self-compacting concrete additive, self-compacting concrete and preparation and application thereof |
| CN112012383A (en) * | 2020-09-15 | 2020-12-01 | 青岛理工大学 | Preparation method and application of load-bearing and heat-insulation integrated high-strength foam concrete rib-free prefabricated roof panel |
| CN112679162A (en) * | 2020-12-29 | 2021-04-20 | 江南大学 | Low-shrinkage ultrahigh-strength self-compacting concrete and preparation method thereof |
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Application publication date: 20120118 |