CN110438874A - Very-high performance road rehabilitation system - Google Patents
Very-high performance road rehabilitation system Download PDFInfo
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- CN110438874A CN110438874A CN201910519483.9A CN201910519483A CN110438874A CN 110438874 A CN110438874 A CN 110438874A CN 201910519483 A CN201910519483 A CN 201910519483A CN 110438874 A CN110438874 A CN 110438874A
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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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/096—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating and filling
-
- 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
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2111/72—Repairing or restoring existing buildings or building materials
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
- C04B2201/52—High compression strength concretes, i.e. with a compression strength higher than about 55 N/mm2, e.g. reactive powder concrete [RPC]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of very-high performance road rehabilitation systems, belong to road engineering and its solid waste and utilize technical field.It is designed to provide a kind of high intensity, the road rehabilitation system and method that high-durability, cracking resistance is good, easy for construction, short time limit and cost performance are good.The very-high performance road rehabilitation system includes ultra-high performance concrete repair layer, feather plucking processing faying face, original normal concrete breakage layer.Ultra-high performance concrete repair layer is covered on feather plucking processing faying face and original normal concrete breakage layer.The cracking resistance and density for effectively improving concrete road surface significantly improve the combination of the durability, compression strength and new-old concrete of concrete road.
Description
Technical field
The present invention relates to a kind of pavement structure system, the reparation structural system of especially damaged road is applied to road work
Journey and solid waste resource recovery utilize technical field.
Background technique
Cement concrete pavement is that a kind of rigidity is big, spreads the pavement structure that weight bearing power is strong, stability is good.However as
Service life of road increases, cement concrete pavement vehicular load, climatic effect, sleet and material aging etc. it is a variety of because
Under the action of element, leads to road surface breakage, cracking, hole pit slot etc., seriously affect the normally travel of vehicle and the use of road, answer
This is timely repaired.
The traditional restorative procedure of cement concrete pavement is to remove damaged concrete, is newly spread and former design grade phase
Same normal concrete is using the shortcomings that the method: the combination of new-old concrete is poor, repair layer is easily peeled off, tensile strength is small,
It is easy to crack, it repairs and conserves and is long in time limit etc..
Summary of the invention
In order to solve prior art problem, it is an object of the present invention to overcome the deficiencies of the prior art, and to provide one kind
Very-high performance road rehabilitation system, building high intensity, high-durability, cracking resistance be good, easy for construction, cost performance is good and short time limit
Road rehabilitation system, effectively improve the cracking resistance and density of concrete road surface, significantly improve concrete road
Durability, compression strength and new-old concrete combination.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of very-high performance road rehabilitation system, including ultra-high performance concrete repair layer, feather plucking processing faying face and original
There is normal concrete breakage layer；Original normal concrete breakage layer is rinsed using tap water, and is removed loosely
Concrete block, cracking, hole pit slot breakage to original normal concrete breakage layer, is repaired using normal concrete
It mends, accomplishes preliminary repairing binder course after solidification, feather plucking processing then is carried out to preliminary repairing binder course, form feather plucking processing and combine
Then face handles in feather plucking and covers the ultra-high performance concrete layer on faying face, after consolidation, form ultra-high performance concrete and repair
The very-high performance road rehabilitation system that cladding, feather plucking processing faying face and original normal concrete breakage layer integration combine.
It is preferred that above-mentioned ultra-high performance concrete repair layer with a thickness of 30~50mm.
As optimal technical scheme of the present invention, the ultra-high performance concrete repair layer of very-high performance road rehabilitation system is by surpassing
High performance concrete preparation, the composition and weight percentage of the ultra-high performance concrete powder are as follows:
The cement is 52.5 grades of ordinary portland cements；
The silicon ash is the ultra-fine siliceous powder body material generated in smelting ferrosilicon and industrial silicon, silicon ash specific surface area
For 20000~28000 ㎡/kg；
The steel-making slag powder is slag micro powder, using converter as defined in YB/T022 standard or electric furnace slag is met, using pre- powder
Closed circuit circulatory system and whole grinding closed circuit circulatory system are ground, through grinding and deferrization process repeatedly, it is little that steel slag is processed into partial size
In 30 μm of steel-making slag powder, then air-jetting type superfine powder sorting machine is used, using air jet-stream wind, by 30 μm of steel of size
Ground-slag carries out suspension separation, obtains slag micro powder of the partial size less than 10 μm；
The desulfurized gypsum is the waste residue generated by coal fired power plant flue gas desulfurization, after the processing such as drying, calcining, levigate
Half water desulfurized gypsum of β type, wherein half water desulfurized gypsum of β type: β-CaSO41/2H2O >=85%, and levigate to specific surface area
≥500㎡/㎏；
The partial size of the Steel-slag Sand is 10~100 mesh；
The water-reducing agent is powder polycarboxylic acids water reducing agent, and water-reducing rate is not less than 30%；
The defoaming agent is powder defoaming agent；
The diameter of the steel fibre is 0.12~0.25mm, and length is 10~14mm.
As the further preferred technical solution of the present invention, the ultra-high performance concrete that very-high performance road rehabilitation system uses
The composition and weight percentage of powder are as follows:
It is preferred that the stability of above-mentioned Steel-slag Sand is qualified, and meet the standard requirements of GB/T 14684-2011 " building sand ".
As optimal technical scheme of the present invention, when preparing very-high performance road rehabilitation system, by the very-high performance coagulation
Native powder formulation weighs ingredient respectively, successively by cement, silicon ash, steel-making slag powder, desulfurized gypsum, water-reducing agent, defoaming agent and Steel-slag Sand
It is put into mixing machine, stirs at least 10 minutes, after stirring evenly, steel fibre is then added, is stirred at least 10 minutes, is adequately mixed
Uniformly after to get arrive ultra-high performance concrete powder.
As optimal technical scheme of the present invention, when preparing very-high performance road rehabilitation system, by ultra-high performance concrete powder
Material transports to construction site scene, carries out extemporaneous preparation ultra-high performance concrete slurry；Ultra-high performance concrete powder is put into vertical
Axis planetary stirring machine, adds water to be stirred, and the control ratio of mud is 0.1~0.2, is stirred 5~10 minutes, and it is mixed to obtain very-high performance
Solidifying soil paste material, i.e., carry out cast in situs using ultra-high performance concrete slurry, to prepare ultra-high performance concrete repair layer.
As optimal technical scheme of the present invention, when preparing the ultra-high performance concrete slurry, the control ratio of mud is
0.15~0.17, it stirs 8~10 minutes.
The present invention compared with prior art, has following obvious prominent substantive distinguishing features and remarkable advantage:
1. the present invention is covered on feather plucking processing faying face and original normal concrete using ultra-high performance concrete repair layer
On damaged layer, the cracking resistance and density of concrete road surface are effectively improved, the resistance to of concrete road is significantly improved
Long property, the binding force of compression strength and new-old concrete；
2. the raw material sources that ultra-high performance concrete repair layer of the present invention uses are wide, production cost can be reduced, and reduce ring
Border pollution；
3. very-high performance road rehabilitation system of the present invention, construction technology is simple, and conventional maintenance is non-evaporating to support, and substantially reduces mixed
The reparation of solidifying soil surface and maintenance duration, simple process have good application prospect.
Detailed description of the invention
Fig. 1 is two very-high performance road rehabilitation system cross section transverse figure of the embodiment of the present invention one and embodiment.
Specific embodiment
Above scheme is described further below in conjunction with specific implementation example, the preferred embodiment of the present invention is described in detail such as
Under:
Embodiment one:
In the present embodiment, referring to Fig. 1, a kind of very-high performance road rehabilitation system, including ultra-high performance concrete reparation
Layer (1), feather plucking processing faying face (2) and original normal concrete breakage layer (3)；To original normal concrete breakage layer
(3) it is rinsed using tap water, and removes loose concrete block, original normal concrete breakage layer (3) is opened
It splits, hole pit slot breakage, is repaired using normal concrete, accomplish preliminary repairing binder course after solidification, then to preliminary
It repairs binder course and carries out feather plucking processing, form feather plucking processing faying face (2), then cover institute in feather plucking processing faying face (2)
State ultra-high performance concrete layer (1), after consolidation, formed ultra-high performance concrete repair layer (1), feather plucking processing faying face (2) and
The very-high performance road rehabilitation system that original normal concrete breakage layer (3) integration combines.The ultra-high performance concrete is repaired
Cladding (1) with a thickness of 45mm.
In the present embodiment, referring to Fig. 1, the ultra-high performance concrete repair layer (1) is prepared by ultra-high performance concrete,
For preparing 100kg ultra-high performance concrete powder:
Cement 38kg, silicon ash 5kg, steel-making slag powder 6kg, desulfurized gypsum 2kg, water-reducing agent 0.4kg, defoaming agent are weighed respectively
0.1kg, Steel-slag Sand 46.5kg；Then successively by cement, silicon ash, steel-making slag powder, desulfurized gypsum, water-reducing agent, defoaming agent and Steel-slag Sand
It is put into mixing machine, stirs 10 minutes, after stirring evenly, steel fibre 2kg is then added, is stirred for 10 minutes, be adequately mixed uniformly
Afterwards to get arrive ultra-high performance concrete powder.
The cement is 52.5 grades of ordinary portland cements；
The silicon ash is the ultra-fine siliceous powder body material generated in smelting ferrosilicon and industrial silicon, silicon ash specific surface area
For 20000~28000 ㎡/kg；
The steel-making slag powder is slag micro powder, using converter as defined in YB/T022 standard or electric furnace slag is met, using pre- powder
Closed circuit circulatory system and whole grinding closed circuit circulatory system are ground, through grinding and deferrization process repeatedly, it is little that steel slag is processed into partial size
In 30 μm of steel-making slag powder, then air-jetting type superfine powder sorting machine is used, using air jet-stream wind, by 30 μm of steel of size
Ground-slag carries out suspension separation, obtains slag micro powder of the partial size less than 10 μm；
The desulfurized gypsum is the waste residue generated by coal fired power plant flue gas desulfurization, after the processing such as drying, calcining, levigate
Half water desulfurized gypsum of β type, wherein half water desulfurized gypsum of β type: β-CaSO41/2H2O >=85%, and levigate to specific surface area
≥500㎡/㎏；
The partial size of the Steel-slag Sand is 10~100 mesh, and the stability of Steel-slag Sand is qualified, and meets GB/T 14684-2011
The standard requirements of " building sand "；
The water-reducing agent is powder polycarboxylic acids water reducing agent, and water-reducing rate is not less than 30%；
The defoaming agent is powder defoaming agent；
The diameter of the steel fibre is 0.12~0.25mm, and length is 10~14mm.
Ultra-high performance concrete powder is transported into construction site scene, carries out extemporaneous preparation ultra-high performance concrete slurry；
Ultra-high performance concrete powder is put into planetary vertical-shaft blender, water is added to be stirred, the control ratio of mud is 0.15, stirring 8
Minute, ultra-high performance concrete slurry is obtained, i.e., cast in situs is carried out using ultra-high performance concrete slurry, to prepare superelevation
Performance concrete repair layer (1).
Fig. 1 is participated in, the interface between ultra-high performance concrete repair layer (1) and original normal concrete breakage layer (3) is
Feather plucking handles faying face 2.Original normal concrete breakage layer application tap water is rinsed, removes loose concrete block, greatly
The breakages application normal concrete such as cracking, hole pit slot repaired, then carry out feather plucking processing.Ultra-high performance concrete
Repair layer 1 is covered on dabbing processing faying face 2 and original normal concrete breakage layer 3.
Experimental test and analysis:
Mechanical test, very-high performance road rehabilitation system are carried out to very-high performance road rehabilitation system manufactured in the present embodiment
3d compression strength reach 92MPa, 28d compression strength reaches 125MPa, and flexural strength reaches 22MPa.
Embodiment two:
The present embodiment is basically the same as the first embodiment, and is particular in that:
In the present embodiment, referring to Fig. 1, a kind of very-high performance road rehabilitation system, including ultra-high performance concrete reparation
Layer (1), feather plucking processing faying face (2) and original normal concrete breakage layer (3)；To original normal concrete breakage layer
(3) it is rinsed using tap water, and removes loose concrete block, original normal concrete breakage layer (3) is opened
It splits, hole pit slot breakage, is repaired using normal concrete, accomplish preliminary repairing binder course after solidification, then to preliminary
It repairs binder course and carries out feather plucking processing, form feather plucking processing faying face (2), then cover institute in feather plucking processing faying face (2)
State ultra-high performance concrete layer (1), after consolidation, formed ultra-high performance concrete repair layer (1), feather plucking processing faying face (2) and
The very-high performance road rehabilitation system that original normal concrete breakage layer (3) integration combines.The ultra-high performance concrete is repaired
Cladding (1) with a thickness of 45mm.
In the present embodiment, referring to Fig. 1, the ultra-high performance concrete repair layer (1) is prepared by ultra-high performance concrete,
For preparing 100kg ultra-high performance concrete powder:
Cement 34kg, silicon ash 8kg, steel-making slag powder 8kg, desulfurized gypsum 3kg, water-reducing agent 0.3kg, defoaming agent are weighed respectively
0.1kg, Steel-slag Sand 44kg；Then cement, silicon ash, steel-making slag powder, desulfurized gypsum, water-reducing agent, defoaming agent and Steel-slag Sand are successively put
Enter in mixing machine, stir 10 minutes, after stirring evenly, steel fibre 2.6kg is then added, is stirred for 10 minutes, be adequately mixed uniformly
Afterwards to get arrive ultra-high performance concrete powder.
The cement is 52.5 grades of ordinary portland cements；
The silicon ash is the ultra-fine siliceous powder body material generated in smelting ferrosilicon and industrial silicon, silicon ash specific surface area
For 20000~28000 ㎡/kg；
The steel-making slag powder is slag micro powder, using converter as defined in YB/T022 standard or electric furnace slag is met, using pre- powder
Closed circuit circulatory system and whole grinding closed circuit circulatory system are ground, through grinding and deferrization process repeatedly, it is little that steel slag is processed into partial size
In 30 μm of steel-making slag powder, then air-jetting type superfine powder sorting machine is used, using air jet-stream wind, by 30 μm of steel of size
Ground-slag carries out suspension separation, obtains slag micro powder of the partial size less than 10 μm；
The desulfurized gypsum is the waste residue generated by coal fired power plant flue gas desulfurization, after the processing such as drying, calcining, levigate
Half water desulfurized gypsum of β type, wherein half water desulfurized gypsum of β type: β-CaSO41/2H2O >=85%, and levigate to specific surface area
≥500㎡/㎏；
The partial size of the Steel-slag Sand is 10~100 mesh, and the stability of Steel-slag Sand is qualified, and meets GB/T 14684-2011
The standard requirements of " building sand "；
The water-reducing agent is powder polycarboxylic acids water reducing agent, and water-reducing rate is not less than 30%；
The defoaming agent is powder defoaming agent；
The diameter of the steel fibre is 0.12~0.25mm, and length is 10~14mm.
Ultra-high performance concrete powder is transported into construction site scene, carries out extemporaneous preparation ultra-high performance concrete slurry；
Ultra-high performance concrete powder is put into planetary vertical-shaft blender, water is added to be stirred, the control ratio of mud is 0.17, stirring 8
Minute, ultra-high performance concrete slurry is obtained, i.e., cast in situs is carried out using ultra-high performance concrete slurry, to prepare superelevation
Performance concrete repair layer (1).
Fig. 1 is participated in, the interface between ultra-high performance concrete repair layer (1) and original normal concrete breakage layer (3) is
Feather plucking handles faying face 2.Original normal concrete breakage layer application tap water is rinsed, removes loose concrete block, greatly
The breakages application normal concrete such as cracking, hole pit slot repaired, then carry out feather plucking processing.Ultra-high performance concrete
Repair layer 1 is covered on dabbing processing faying face 2 and original normal concrete breakage layer 3.
Experimental test and analysis:
Mechanical test, very-high performance road rehabilitation system are carried out to very-high performance road rehabilitation system manufactured in the present embodiment
3d compression strength reach 93MPa, 28d compression strength reaches 128MPa, and flexural strength reaches 23MPa.
In conclusion the above embodiment of the present invention very-high performance road rehabilitation system, belongs to road engineering and its solid is useless
Gurry utilizes technical field, provides good a kind of high intensity, high-durability, cracking resistance, easy for construction, short time limit and cost performance
Good road rehabilitation system and method.The very-high performance road rehabilitation system includes ultra-high performance concrete repair layer 1, at feather plucking
Manage faying face 2, original normal concrete breakage layer 3.Ultra-high performance concrete repair layer is covered on feather plucking processing faying face and original
Have on normal concrete breakage layer.The above embodiment of the present invention very-high performance road rehabilitation system effectively improves concrete
The cracking resistance and density on road surface significantly improve the durability of concrete road, the knot of compression strength and new-old concrete
It closes.
Combination attached drawing of the embodiment of the present invention is illustrated above, but the present invention is not limited to the above embodiments, it can be with
The purpose of innovation and creation according to the present invention makes a variety of variations, under the Spirit Essence and principle of all technical solutions according to the present invention
Change, modification, substitution, combination or the simplification made, should be equivalent substitute mode, as long as meeting goal of the invention of the invention,
Without departing from the technical principle and inventive concept of very-high performance road rehabilitation system of the present invention, protection model of the invention is belonged to
It encloses.
Claims (8)
1. a kind of very-high performance road rehabilitation system, it is characterised in that: at ultra-high performance concrete repair layer (1), feather plucking
Manage faying face (2) and original normal concrete breakage layer (3)；Tap water is used to original normal concrete breakage layer (3)
It is rinsed, and removes loose concrete block, it is broken to the cracking of original normal concrete breakage layer (3), hole pit slot
It at damage, is repaired using normal concrete, accomplishes preliminary repairing binder course after solidification, then preliminary repairing binder course is carried out
Feather plucking processing, forms feather plucking processing faying face (2), then covers the very-high performance coagulation in feather plucking processing faying face (2)
Soil layer (1) after consolidation, forms ultra-high performance concrete repair layer (1), feather plucking processing faying face (2) and original normal concrete
The very-high performance road rehabilitation system that damaged layer (3) integration combines.
2. very-high performance road rehabilitation system according to claim 1, it is characterised in that: the ultra-high performance concrete reparation
Layer (1) with a thickness of 30~50mm.
3. very-high performance road rehabilitation system according to claim 1, it is characterised in that: the ultra-high performance concrete reparation
Layer (1) is prepared by ultra-high performance concrete, the composition and weight percentage of the ultra-high performance concrete powder are as follows:
The cement is 52.5 grades of ordinary portland cements；
The silicon ash is the ultra-fine siliceous powder body material generated in smelting ferrosilicon and industrial silicon, and silicon ash specific surface area is
20000~28000 ㎡/kg；
The steel-making slag powder is that slag micro powder is closed using converter as defined in YB/TO22 standard or electric furnace slag is met using pre- grinding
Steel slag is processed into partial size and is not more than 30 μ by the road circulatory system and whole grinding closed circuit circulatory system through grinding and deferrization process repeatedly
The steel-making slag powder of m, then air-jetting type superfine powder sorting machine is used, using air jet-stream wind, by 30 μm of steel-making slag powder of size
Suspension separation is carried out, slag micro powder of the partial size less than 10 μm is obtained；
The desulfurized gypsum is the waste residue generated by coal fired power plant flue gas desulfurization, by treated the β such as drying, calcining, levigate
Half water desulfurized gypsum of type, wherein half water desulfurized gypsum of β type: β-CaSO41/2H2O >=85%, and it is levigate to specific surface area >=
500㎡/㎏；
The partial size of the Steel-slag Sand is 10~100 mesh；
The water-reducing agent is powder polycarboxylic acids water reducing agent, and water-reducing rate is not less than 30%；
The defoaming agent is powder defoaming agent；
The diameter of the steel fibre is 0.12~0.25mm, and length is 10~14mm.
4. very-high performance road rehabilitation system according to claim 3, it is characterised in that: the ultra-high performance concrete powder
Composition and weight percentage are as follows:
5. very-high performance road rehabilitation system according to claim 3, it is characterised in that: the stability of the Steel-slag Sand is closed
Lattice, and meet the standard requirements of GB/T 14684-2011 " building sand ".
6. very-high performance road rehabilitation system according to claim 3, it is characterised in that: press the ultra-high performance concrete powder
Material formula weighs ingredient respectively, and cement, silicon ash, steel-making slag powder, desulfurized gypsum, water-reducing agent, defoaming agent and Steel-slag Sand are sequentially placed into
It in mixing machine, stirs at least 10 minutes, after stirring evenly, steel fibre is then added, is stirred at least 10 minutes, be adequately mixed uniformly
Afterwards to get arrive ultra-high performance concrete powder.
7. very-high performance road rehabilitation system according to claim 3, it is characterised in that: transport ultra-high performance concrete powder
To construction site scene, extemporaneous preparation ultra-high performance concrete slurry is carried out；Ultra-high performance concrete powder is put into vertical shaft row
Planetary blender, adds water to be stirred, and the control ratio of mud is 0.1~0.2, stirs 5~10 minutes, obtains ultra-high performance concrete
Slurry carries out cast in situs using ultra-high performance concrete slurry, to prepare ultra-high performance concrete repair layer (1).
8. very-high performance road rehabilitation system according to claim 7, it is characterised in that: preparing the very-high performance coagulation
When soil paste material, the control ratio of mud is 0.15~0.17, is stirred 8~10 minutes.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111747703A (en) * | 2020-06-08 | 2020-10-09 | 上海复培新材料科技有限公司 | Ultrahigh-performance concrete river fence and manufacturing method thereof |
| CN112127925A (en) * | 2020-09-11 | 2020-12-25 | 山西省交通科技研发有限公司 | Tunnel structure defect repairing system and construction method |
| CN112174597A (en) * | 2020-09-01 | 2021-01-05 | 苏州易斯特建材科技有限公司 | Fiber-reinforced dry mixed powder of steel slag concrete and method for maintaining pavement of fiber-reinforced dry mixed powder |
| CN113638321A (en) * | 2021-09-06 | 2021-11-12 | 上海市政工程设计研究总院（集团）有限公司 | Repairing method of concrete bridge deck |
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| Publication number | Priority date | Publication date | Assignee | Title |
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