CN105621993A - Steel fiber polymer concrete composite structure and preparation method and application thereof - Google Patents
Steel fiber polymer concrete composite structure and preparation method and application thereof Download PDFInfo
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- CN105621993A CN105621993A CN201610077878.4A CN201610077878A CN105621993A CN 105621993 A CN105621993 A CN 105621993A CN 201610077878 A CN201610077878 A CN 201610077878A CN 105621993 A CN105621993 A CN 105621993A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/262—Concrete reinforced with steel fibres
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Abstract
The invention belongs to the field of civil construction and traffic engineering and discloses a steel fiber polymer concrete composite structure and a preparation method and application thereof. The preparation method of the composite structure comprises: determining pull bearing and shear bearing parts in the composite structure, using steel fiber polymer structure concrete material on the pull bearing and/or shear bearing parts, and using common high-strength concrete material at other parts; casting a bottom member, a middle member and an upper member in succession, and carrying out maintaining to obtain the steel fiber polymer concrete composite structure. The steel fiber polymer structure concrete material described herein and the common high-strength concrete material have a compressive strength difference </=2 MPa, and the composite structure has high strength, high toughness, good deformation coordination, wear resistance, anti-permeability, alkali resistance, weatherability, cracking resistance, fatigue resistance, impact resistance and durability.
Description
Technical field
The invention belongs to civil construction and Communication and Transportation Engineering field, be specifically related to a kind of Steel-fiber polymer concrete composite construction and preparation method thereof and application.
Background technology
For long span concrete bridge superstructure, during construction or operation, structure partial, No. 0 block of such as continuous rigid frame bridge, No. 1 block, 1/4 near, span centre sections and closure segment etc., it is in complex stress condition and there will be bigger tension or shear stress, cause cracking and affect the durability of structure. More engineering practice shows, adopts common high-strength concrete material, is only not met by crack resistance and the life requirement of above-mentioned bridge structure by improving the strength of materials. Toughening high-strength, high is civil construction and the field of traffic development trend to material and structural performance requirements. At present, high-strength or high-ductility concrete mainly has three classes: common high-strength concrete, steel fiber reinforced concrete, concrete modified by steel fiber enhanced polymer; Composite construction is mainly steel-concrete composite construction.
Although common high-strength concrete intensity is high, cheap, it is widely used, but the cracking under temperature-caused shrinkage, fatigue and impact load easily occurs, it is impossible to the crack resistance of the xoncrete structures such as the satisfied bridge being in complex stress condition and life requirement.
Steel fiber reinforced concrete has higher Anti-pull-press, bending resistance, shearing strength than normal concrete, and its resisting fatigue, shock resistance and endurance quality also have greatly improved. But steel fibre is little to preventing the contribution of concrete incipient crack; The impermeability of steel fiber reinforced concrete, alkali resistance, weatherability and non-deformability are poor, and ordinary steel fiber in concrete easily by corrosion, make structural outer surface be destroyed too early; Rustless steel steel fibre is expensive, it is difficult to popularization and application.
Conventional concrete modified by steel fiber enhanced polymer, although having good caking property, impermeability, alkali resistance, weatherability and bigger deformability etc., but current concrete modified by steel fiber enhanced polymer belongs to middle low-strength concrete, also cannot be applied in the carrying structure that concrete-bridge superstructure etc. needs high intensity.
Steel-concrete compound/combinative structure mainly has four classes such as steel-concrete composite beam, steel reinforced concrete structure, concrete filled steel tube, profiled sheet concrete combined board, its advantage is able to reduce structure height, alleviate weight, there is good ductility and rigidity, shock resistance, resisting fatigue, good stability. But the compatibility of deformation between steel construction piece and concrete component is poor, its joint portion is the weakness of such compound/combinative structure safety, and application property is poor, cost is partially expensive, and the alkali resistance of steel construction part, weatherability and durability need to improve.
Summary of the invention
In order to solve the shortcoming and defect part of above prior art, the primary and foremost purpose of the present invention is in that to provide a kind of Steel-fiber polymer concrete composite construction.
Another object of the present invention is to the preparation method that above-mentioned Steel-fiber polymer concrete composite construction is provided.
It is still another object of the present invention to provide the application of above-mentioned Steel-fiber polymer concrete composite construction.
The object of the invention is achieved through the following technical solutions:
A kind of Steel-fiber polymer concrete composite construction, the tension of described composite construction is used steel fiber polymer structural concrete material (SFPSC) or/and cut position, and other position uses common high-strength concrete material; Described steel fiber polymer structural concrete material and common high-strength concrete material have the comprcssive strength of difference��2MPa.
Described composite construction includes the structures such as box beam, I-beam, T-shaped beam, rectangular beam, hollow slab girder. The structural representation of described composite construction is as shown in Figure 1.
Described steel fiber polymer structural concrete material is formulated by the component of following mass percent: rubble 41%��45%, medium sand 25%��28%, cement 18%��21%, water 6.3%��7.3%, steel fibre 2.1%��3.1%, water reducer 0.21%��0.29%, latex 0.25%��0.29% and flyash 0.10%��0.40%.
Preferably, described steel fibre is impression shape or waveform steel fibre.
Preferably, described water reducer is high performance water reducing agent of polyocarboxy acid.
Preferably, described latex is butadiene-styrene latex, is a kind of chance redispersible vinyl acetate/ethylene/copolymerization rubber powder of water.
The preparation method of above-mentioned Steel-fiber polymer concrete composite construction, comprises the following steps:
(1) determine the tension in composite construction, cut position, tension and/or cut position use steel fiber polymer structural concrete material, other position use common high-strength concrete material;
(2) configuration base plate or bottom wing listrium equipotential in the material of bottom member and are poured into a mould, and according still further to the method maintenance 4��24 hours of normal concrete, if without bottom member, are directly entered step (3);
(3) configuration web or rib etc. is positioned at the material of middle member and pours into a mould, according still further to the method maintenance 4��24 hours of normal concrete;
(4) configuration top board or top flange plate etc. is positioned at the material of upper component and pours into a mould, and whole composite construction is carried out maintenance by the maintenance process according still further to normal concrete, obtains Steel-fiber polymer concrete composite construction.
Preferably, described steel fiber polymer structural concrete material is prepared via a method which:
(1) according to mass percent, rubble, medium sand, steel fibre are put into blender dry mixing;
(2) cement, latex and flyash are added, then dry mixing;
(3) add water and water reducer, carry out wet-mixing;
(4) concrete after wet-mixing is put in mixing equipment, discharging after stirring, obtain described steel fiber polymer structural concrete material.
Preferably, described in step (1), the blender dry mixing time is 2��5min.
Preferably, the dry mixing time described in step (2) is 1��2min.
Preferably, the wet-mixing time described in step (3) is 2��5min.
Above-mentioned Steel-fiber polymer concrete composite construction wet supporting after being cast can enter the dry foster stage for 5��7 days, and doing just can open to traffic or use after supporting.
Above-mentioned Steel-fiber polymer concrete composite construction can be used in the xoncrete structures such as bridge, tunnel, harbour, harbour, road and house.
Relative to prior art, the invention have the advantages that and beneficial effect:
(1) steel fiber polymer structural concrete material (SFPSC) in composite construction of the present invention and common high-strength concrete material have the comprcssive strength of difference��2MPa, thus reaching the compatibility of deformation performance of excellence;
(2) each position of composite construction of the present invention is according to its stressing conditions, it is possible to adopt steel fiber polymer structural concrete material or common high-strength concrete material, preparation method and technology simple and clear flexibly;
(3) tension of composite construction of the present invention, resistance to compression, shearing resistance, the basic mechanical performance such as antitorque and non-deformability are balanced, and structure is more reasonable;
(4) steel fiber polymer structural concrete material that composite construction of the present invention uses has more superior wear-resisting, alkaline-resisting, weather-proof, tension, resistance to deformation, cracking resistance, resisting fatigue, shock resistance and endurance quality than common high-strength concrete material;
(5) the steel fiber polymer structural concrete that composite construction of the present invention uses has more superior alkaline-resisting, weather-proof, resistance to deformation, cracking resistance, resisting fatigue, shock resistance and endurance quality than steel fiber reinforced concrete; Than concrete modified by steel fiber enhanced polymer, there is higher tension, resistance to compression, bending resistance, shearing strength, there is more superior resisting fatigue, shock resistance and endurance quality.
Accompanying drawing explanation
Fig. 1 is the structural representation (material not marking part in figure is common high-strength concrete, and SFPSC is steel fiber polymer structural concrete) of composite construction of the present invention;
Fig. 2 is steel fiber polymer structural concrete material SP60 and C60 concrete S��N experimental curve diagram fatigue life prepared in embodiment 1;
Fig. 3 is steel fiber polymer structural concrete material SP55 and C55 concrete S��N experimental curve diagram fatigue life prepared in embodiment 2.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
The top board tension of C60 grade, base plate pressurized the preparation method of compound box beam (such as: the main bridge box beam 0# block of rigid frame bridge and 1# block, seeing Fig. 1 (a)) as follows:
(1) material that each position of compound box beam adopts is determined. Stressing conditions according to this compound box beam, it is determined that its top board adopts steel fiber polymer structural concrete to prepare, web and base plate adopt C60 concrete to prepare;
(2) preparation C60 concrete, builds base plate and the web of compound box beam, maintenance 8 hours after building;
(3) preparing steel fiber polymer structural concrete according to the concrete comprcssive strength of C60, its preparation method is as follows:
1) clean medium sand, stone, and be at drying regime;
2) shown in table 1, rubble, medium sand, steel fibre are first put into blender dry mixing 2min by match ratio;
3) add cement, butadiene-styrene latex and flyash, be stirred for 2min;
4) add water, high performance water reducing agent of polyocarboxy acid, carry out wet-mixing 2min;
5) after more uniform to mixture ratio, concrete put in mixing equipment, gets final product discharging after stirring, be prepared into steel fiber polymer structural concrete (SP60).
(4) by the above-mentioned steel fiber polymer structural concrete conveyance prepared to the mould of compound box beam, build its top board, build complete and etc. whole box beam is carried out maintenance 7 days after its initial set at once, obtain Steel-fiber polymer concrete composite construction.
The steel fiber polymer structural concrete Main Mechanical of concrete SP60 and C60 prepared by the present embodiment is as shown in table 2; Its S��N empirical curve fatigue life is as shown in Figure 2.
The each material usage of table 1 steel fiber polymer structural concrete (wt%)
| Rubble | Sand | Cement | Water | Steel fibre | Water reducer | Latex | Flyash |
| 41.2 | 28.0 | 21.0 | 6.80 | 2.10 | 0.30 | 0.30 | 0.30 |
The table 2 steel fiber polymer structural concrete Main Mechanical of concrete SP60 and C60
Embodiment 2
The top board pressurized of C55 grade, base plate tension compound box beam (such as: in the main spanning of rigid frame bridge near section box girder, see Fig. 1 (b)) preparation method as follows:
(1) material that each position of compound box beam adopts is determined. Stressing conditions according to this compound box beam, it is determined that its top board and web adopt C55 concrete to prepare, base plate adopts steel fiber polymer structural concrete to prepare;
(2) preparing steel fiber polymer structural concrete according to the concrete comprcssive strength of C55, its preparation method is as follows:
1) clean medium sand, stone, and be at drying regime;
2) shown in table 3, rubble, medium sand, steel fibre are first put into blender dry mixing 2min by match ratio;
3) add cement, butadiene-styrene latex and flyash, be stirred for 1.5min;
4) add water, high performance water reducing agent of polyocarboxy acid, carry out wet-mixing 2min;
5) after more uniform to mixture ratio, concrete put in mixing equipment, gets final product discharging after stirring, be prepared into steel fiber polymer structural concrete (SP55).
(3) by the steel fiber polymer structural concrete conveyance for preparing to the mould of compound box beam, its base plate is built, maintenance 4 hours after building;
(4) preparation C55 concrete, builds top board and the web of compound box beam, to whole box beam maintenance 7 days after building, obtains Steel-fiber polymer concrete composite construction;
The steel fiber polymer structural concrete Main Mechanical of concrete SP55 and C55 prepared by the present embodiment is as shown in table 4; Its S��N empirical curve fatigue life is as shown in Figure 3.
The each material usage of table 3 steel fiber polymer structural concrete (wt%)
The table 4 steel fiber polymer structural concrete Main Mechanical of concrete SP55 and C55
Embodiment 3
The engineer applied of Steel-fiber polymer concrete composite construction:
Case history and the application effect of the Steel-fiber polymer concrete composite construction of the application present invention and preparation method thereof are summarized as follows:
Case history in July, 1: 2007��2008 year January, the composite construction of the present invention is combined as Prestressed Continuous Rigid-framed Bridge No. 0 block of main bridge box beam of 112+2 �� 200+112 rice on Guangdong Province's highway and obtains application across footpath. Concrete application process and construction procedure are as follows:
(1) form of composite construction is determined. The construction simulation stage and operation stage operating mode, overall structure and partial structurtes to main bridge carry out force analysis, determine that all No. 0 block box beams at the main bridge of this bridge (two width) adopt Steel-fiber polymer concrete composite construction shown in Fig. 1 (a), namely its base plate and web adopt common high-strength concrete, and top board adopts steel fiber polymer structural concrete. Two kinds of concrete grades are C60;
(2) clean sand, stone, and be at drying regime;
(3) according to standard preparation C60 concrete, the base plate of cast in situs compound box beam and web, maintenance 24 hours after building;
(4) according to the match ratio of " cement (wt): medium sand (wt): rubble (wt): water (wt): water reducer (wt): steel fibre (wt): polymer latex (wt): flyash (wt)=1:1.33:1.96:0.324:0.0143:0.100:0.0143:0.0143 ", first rubble, medium sand, steel fibre are put into blender dry mixing 5min;
(5) add cement, butadiene-styrene latex, flyash, be stirred for 2min;
(6) add water and water reducer, carry out wet-mixing 5min;
(7) after more uniform, concrete is put in mixing equipment to mixture ratio, discharging after stirring, and adopt the method for remotely pumping that concrete is delivered to above-mentioned box girder segment to carry out cast-in-place to its top board;
(8) adopt the maintenance process of normal concrete to whole box beam maintenance 7 days.
Case history in July, 2: 2014��2015 year July, the composite construction of the present invention is combined as in the 90+150+90 main spanning of rice prestressed continuous rigid structure across footpath on Guangdong Province's highway closure segment and each 2 section box girders have given application around. Concrete application process and construction procedure are as follows:
(1) form of composite construction is determined. The construction simulation stage and operation stage operating mode, overall structure and partial structurtes to main bridge carry out force analysis, determine the main bridge of this bridge (two width) span centre closure segment and around each 2 section box girders adopt Steel-fiber polymer concrete composite construction shown in Fig. 1 (b), namely its base plate adopts steel fiber polymer structural concrete, web and top board to adopt common high-strength concrete. Two kinds of concrete grades are C55;
(2) clean sand, stone, and be at drying regime;
(3) according to the match ratio of " cement (wt): medium sand (wt): rubble (wt): water (wt): water reducer (wt): steel fibre (wt): polymer latex (wt): flyash (wt)=1:1.47:2.32:0.332:0.0121:0.100:0.0132:0.0168 ", first rubble, medium sand, steel fibre are put into blender dry mixing 5min;
(4) add cement, butadiene-styrene latex, flyash, be stirred for 2min;
(5) add water and water reducer, carry out wet-mixing 5min;
(6) after more uniform, concrete is put in mixing equipment to mixture ratio, discharging after stirring, and adopt the method that hopper transports that fresh concrete is delivered to above-mentioned box beam base plate to carry out cast-in-place. After being poured, the maintenance process maintenance of employing normal concrete 8 hours;
(7) according to standard preparation C55 concrete, the web of cast in situs compound box beam and top board;
(8) to whole compound box beam maintenance 7 days.
Case history in January, 3: 2014��2014 year June, the composite construction of the present invention is combined as 35+50+35 rice continuous box girder on Guangdong Province's highway and has given application across footpath. Concrete application process and construction procedure are as follows:
(1) form of composite construction is determined. The construction simulation stage and operation stage operating mode, continuous box girder is carried out structural stress analysis, determining and all adopt Steel-fiber polymer concrete composite construction shown in Fig. 1 (e) on all sections of this continuous box girder, namely its total cross-section all adopts steel fiber polymer structural concrete. Concrete grade is set as C55;
(2) clean sand, stone, and be at drying regime;
(3) according to the match ratio of " cement (wt): medium sand (wt): rubble (wt): water (wt): water reducer (wt): steel fibre (wt): polymer latex (wt): flyash (wt)=1:1.47:2.32:0.332:0.0121:0.100:0.0132:0.0168 ", first rubble, medium sand, steel fibre are put into blender dry mixing 5min;
(4) add cement, butadiene-styrene latex, flyash, be stirred for 2min;
(5) add water and water reducer, carry out wet-mixing 5min;
(6) after more uniform, concrete is put in mixing equipment to mixture ratio, discharging after stirring, and adopt the method that hopper transports that fresh concrete is delivered to above-mentioned box girder segment to carry out cast-in-place. After being poured, the maintenance process maintenance of employing normal concrete 7 days.
Above three engineering practice shows, the Steel-fiber polymer concrete composite construction of the present invention has superior tension, resistance to compression, bending resistance, shearing strength and alkaline-resisting, weather-proof, resistance to deformation, cracking resistance, resisting fatigue and endurance quality. Meanwhile the steel fiber polymer structural concrete flowability of the present invention can be good, it is possible to realizes remote (more than 100 meters) pumping. Showing through sampling examination result (table 2, table 4, Fig. 2 and Fig. 3), the concrete of the present invention has superior tension, bending resistance, shearing strength and resistance to deformation, cracking resistance, anti-fatigue performance. After the continuous rigid frame bridge of case history one is open to traffic 6 years half, mechanism and bridge Long Period Health Monitoring unit testing result show after testing, the composite construction adopting the present invention does not find the phenomenons such as cracking, corrosion, and the maximum defluxion of 200 meters of main spans (vertical deformation) only has 10cmm, than the minimizing about 50% estimated. Rigid frame bridge and the Continuous Box Girder Bridge of case history two, three are also open to traffic, currently also do not ftracture, the phenomenon such as corrosion, and its deformation is also less. This composite construction showing the present invention and steel fiber polymer structural concrete and preparation method thereof are highly effective and feasible.
Above-described embodiment is the present invention preferably embodiment; but embodiments of the present invention are also not restricted to the described embodiments; the change made under other any spirit without departing from the present invention and principle, modification, replacement, combination, simplification; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. a Steel-fiber polymer concrete composite construction, it is characterised in that: the tension of described composite construction is used steel fiber polymer structural concrete material or/and cut position, and other position uses common high-strength concrete material; Described steel fiber polymer structural concrete material and common high-strength concrete material have the comprcssive strength of difference��2MPa.
2. a kind of Steel-fiber polymer concrete composite construction according to claim 1, it is characterised in that: described composite construction includes box beam, I-beam, T-shaped beam, rectangular beam, hollow slab girder.
3. a kind of Steel-fiber polymer concrete composite construction according to claim 1, it is characterised in that: described steel fiber polymer structural concrete material is formulated by the component of following mass percent: rubble 41%��45%, medium sand 25%��28%, cement 18%��21%, water 6.3%��7.3%, steel fibre 2.1%��3.1%, water reducer 0.21%��0.29%, latex 0.25%��0.29% and flyash 0.10%��0.40%.
4. a kind of Steel-fiber polymer concrete composite construction according to claim 3, it is characterised in that: described steel fibre is impression shape or waveform steel fibre; Described water reducer is high performance water reducing agent of polyocarboxy acid; Described latex is butadiene-styrene latex.
5. the preparation method of a kind of Steel-fiber polymer concrete composite construction described in any one of Claims 1 to 4, it is characterised in that comprise the following steps:
(1) determine the tension in composite construction, cut position, tension and/or cut position use steel fiber polymer structural concrete material, other position use common high-strength concrete material;
(2) configuration base plate or bottom wing listrium equipotential in the material of bottom member and are poured into a mould, and according still further to the method maintenance 4��24 hours of normal concrete, if without bottom member, are directly entered step (3);
(3) configuration web or rib etc. is positioned at the material of middle member and pours into a mould, according still further to the method maintenance 4��24 hours of normal concrete;
(4) configuration top board or top flange plate etc. is positioned at the material of upper component and pours into a mould, and whole composite construction is carried out maintenance by the maintenance process according still further to normal concrete, obtains Steel-fiber polymer concrete composite construction.
6. the preparation method of a kind of Steel-fiber polymer concrete composite construction according to claim 5, it is characterised in that: described steel fiber polymer structural concrete material is prepared via a method which:
(1) according to mass percent, rubble, medium sand, steel fibre are put into blender dry mixing;
(2) cement, latex and flyash are added, then dry mixing;
(3) add water and water reducer, carry out wet-mixing;
(4) concrete after wet-mixing is put in mixing equipment, discharging after stirring, obtain described steel fiber polymer structural concrete material.
7. the preparation method of a kind of Steel-fiber polymer concrete composite construction according to claim 6, it is characterised in that: the blender dry mixing time described in step (1) is 2��5min; The dry mixing time described in step (2) is 1��2min; The wet-mixing time described in step (3) is 2��5min.
8. the preparation method of a kind of Steel-fiber polymer concrete composite construction according to claim 5, it is characterized in that: above-mentioned Steel-fiber polymer concrete composite construction wet supporting after being cast can enter the dry foster stage for 5��7 days, and doing just can open to traffic or use after supporting.
9. the application in bridge, tunnel, road, harbour, harbour and house xoncrete structure of a kind of Steel-fiber polymer concrete composite construction described in any one of Claims 1 to 4.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107721327A (en) * | 2017-12-08 | 2018-02-23 | 郑亮 | A kind of modified Stainless-steel fibre bridge, which pours, uses concrete |
| CN108985968A (en) * | 2018-07-24 | 2018-12-11 | 上海小蚁科技有限公司 | A kind of automatic production method of concrete and device, storage medium, terminal |
| CN111636622A (en) * | 2020-06-11 | 2020-09-08 | 王文霞 | Fabricated steel structure self-insulation composite concrete structure system and forming method |
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| KR20130092929A (en) * | 2012-02-13 | 2013-08-21 | 김대자 | High strenth concrete and high strenth concrete construction method |
| CN102691418A (en) * | 2012-06-12 | 2012-09-26 | 华北水利水电学院 | Construction method of steel fiber light concrete and high-strength concrete overlapped-cast composite beam |
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