CN107059529A - Embedding stone structure and construction method between ultra-high performance concrete surface and upper layer - Google Patents
Embedding stone structure and construction method between ultra-high performance concrete surface and upper layer Download PDFInfo
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- CN107059529A CN107059529A CN201710032448.5A CN201710032448A CN107059529A CN 107059529 A CN107059529 A CN 107059529A CN 201710032448 A CN201710032448 A CN 201710032448A CN 107059529 A CN107059529 A CN 107059529A
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- high performance
- performance concrete
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- 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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/145—Sliding coverings, underlayers or intermediate layers ; Isolating or separating intermediate layers; Transmission of shearing force in horizontal intermediate planes, e.g. by protrusions, by inlays
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses the embedding stone structure between a kind of ultra-high performance concrete surface and upper layer and construction method, embedding stone structure includes ultra-high performance concrete basic unit, rubble, tack coat and the upper layer of ultra-high performance concrete substrate surface build-in；Tack coat is located at ultra-high performance concrete basic unit and the top on the surface of rubble formation, and upper layer is located above tack coat, and one end of rubble is mounted in ultra-high performance concrete basic unit, and then upward surface layer is raised for the other end；The upper surface of ultra-high performance concrete basic unit forms convex-concave surface because of the extruding by rubble.It is fixedly arranged at by a hard rubble part in ultra-high performance concrete, another part is fixedly arranged in upper layer, strengthen interface interlocking power, in ultra-high performance concrete surface construction macroscopic view with carefully seeing multiple dimensioned interlocking structure, effectively prevent upper layer in the sliding at basic unit interface, anti-slipping property energy, shear behavior and high-temperature stability between ultra-high performance concrete and upper layer is substantially improved.
Description
Technical field
The present invention relates to concrete paving construction field, more particularly to a kind of ultra-high performance concrete surface and upper layer it
Between embedding stone structure and its construction method.
Background technology
Ultra-high performance concrete is a kind of fiber reinforced cement-based composite material developed rapidly in recent years, because it is anti-
The advantage such as Compressive Strength height, superhigh tenacity, surface compact and durability be good, is successfully applied to important pavement structure.Should for protection
Structure by the direct mechanical damage of vehicular load, does not lay upper layer, to meet vehicle walking characteristicses on ultra-high performance concrete surface
It can require.
Due to not including coarse aggregate in ultra-high performance concrete material component, grain diameter is generally less than table after 1mm, shaping
Face is fine and close and smooth, therefore, generally using hard groove engraving, ball blast method to increase interlocking power and resistant slide level, effect is relatively good.
But there is also problem for both approaches：
1st, hard groove engraving
1. surface groove depth 3mm~4mm, width 3mm~5mm, spacing 7mm~10mm, will destroy very-high performance coagulation
Soil structure, reduces thickness of protection tier；The flexural capacity of the ultra-high performance concrete of same thickness also can accordingly decline, though can
Made up by increasing ultra-high performance concrete thickness, but substantially increase dead load, improve construction costs.
2. the maintenance engineering after, when changing old surface layer, cutting or is cleared up former cutting again, is existed further
Destroy ultra-high performance concrete structure, and increase structure reinforcing bars corrosion risk.
2nd, ball blast method
1. ball blast is implemented on ultra-high performance concrete surface, can only produce the thin mat surface for seeing texture, this is due to superelevation
Coarse aggregate can not be included in concrete material component, therefore ball blast technique can be only formed the surface structure of meso-scale.
2. in terms of anti-slipping property can be with shear resistance, construction Shortcomings are carefully seen on ultra-high performance concrete surface.
3. under ball blast mode, ultra-high performance concrete can be met with asphalt uplayer inter-layer shearing strength during normal temperature (20 DEG C)
Engine request；But under high temperature (60 DEG C), inter-layer shearing strength declines to a great extent, it is impossible to meet force request, there is high-temperature stable
Property it is not enough and the risk of inter-laminar shear failure occur.
The content of the invention
The technical problems to be solved by the invention are：For there may be between ultra-high performance concrete surface and upper layer
Failure by shear problem, particularly hot area, heavy traffic, very heavy traffic road, or continuous long, steep longitudinal gradient section, bridge
Face, which is mated formation etc., requires resistant slide and shearing strength higher engineering, the present invention build ultra-high performance concrete surface macroscopic view with it is thin
See the synergy of multi-dimension texture structure, reinforcing interlocking power and cohesive force, General Promotion ultra-high performance concrete and upper layer
Inter-layer shearing strength and anti-slipping property energy, the embedding stone knot between a kind of ultra-high performance concrete surface and upper layer is devised for this
Structure and its construction method.
In order to solve the above technical problems, the present invention is disclosed between a kind of ultra-high performance concrete surface and upper layer first
Embedding stone structure, including ultra-high performance concrete basic unit, the rubble of ultra-high performance concrete substrate surface build-in, tack coat and on
Surface layer；The tack coat is located at the ultra-high performance concrete basic unit and the top on the surface of rubble formation, the upper layer position
Above the tack coat, one end of the rubble is mounted in the ultra-high performance concrete basic unit, and the other end then to
The upper layer is raised；The upper surface of the ultra-high performance concrete basic unit by the extruding of the rubble because being formed concavo-convex table
Face；The laying of the rubble and convex-concave surface makes to form macroscopic view and thin sight between the ultra-high performance concrete basic unit and upper layer
Multiple dimensioned interlocking structure.
Further, surface texture depth TD=1.0~2.0mm of the ultra-high performance concrete basic unit.
Further, insert depth of the rubble in ultra-high performance concrete basic unit is the 2/5~3/5 of its particle diameter,
The build-in best results of this kind of insert depth and ultra-high performance concrete.
Further, the rubble is shaped as polyhedron, its material be quartz sand or basalt, its particle diameter be 4.75~
9.5mm；The fiber because ultra-high performance concrete gathers, if rubble is too thick, by serious disturbance surface texture and press-in difficulty；Too
Carefully wedge action is not played.The mortar consistent with ultra-high performance concrete, mortar are dried or wrapped to the rubble clean surface
The main component of material is as ultra-high performance concrete, so wrapping a thin layer on rubble surface, can cause rubble and superelevation
Performance concrete is combined.
Further, the spreading quantity of the rubble be the ultra-high performance concrete substrate surface accumulate 40%~
80%.
Further, average depression depth is 3~6mm in the convex-concave surface.
Further, the upper layer is bituminous concrete, modified asphalt concrete, asphalt-mastic-broken stone, epoxy drip
The asphalt of any or multiple combinations formation of blue or green concrete, Superpave or Novachip, the pitch is mixed
The thickness control for closing material is 10mm~60mm；Or the upper layer is layer polymerization thing cover, the layer polymerization thing cover
Thickness control be 6mm~25mm.
Further, under the normal temperature of the ultra-high performance concrete basic unit and upper layer interlayer tiltedly cut intensity 1.5MPa with
On, 60 DEG C of interlayers of the ultra-high performance concrete basic unit and upper layer tiltedly cut intensity in more than 1.0MPa.
Then applying the invention discloses the embedding stone structure between a kind of above-mentioned ultra-high performance concrete surface and upper layer
Work method, comprises the following steps：
1) after making ultra-high performance concrete basic unit, rubble is dispensed before ultra-high performance concrete basic unit not initial set；
2) rubble is pressed into ultra-high performance concrete basic unit, insert depth is the 2/5~3/5 of ballast grain sizes, is formed recessed
Nonreentrant surface；
3) after ultra-high performance concrete basic unit high-temperature steam curing, natural cooling carries out surface purging using compressed air, removed
Surface laitance and the rubble of loosening；
4) binding material formation tack coat is sprayed on convex-concave surface, the tack coat selects high viscosity modified pitch or heat
Pitch, 0.8~1.4L/m of its consumption2, or select modified emulsifying asphalt, 0.3~0.6L/m of consumption2；
5) upper layer is set on the convex-concave surface in ultra-high performance concrete basic unit, rubble is combined completely with upper layer
Form overall, the upper layer uses asphalt.
Further, the step 4) in, tack coat uses epoxy resin material, and consumption is 0.9~1.3kg/m2, institute
State step 5) in, upper layer uses polymer concrete.
Compared with prior art, the advantage of the invention is that：
It is fixedly arranged in ultra-high performance concrete, another part is fixedly arranged in upper layer, is increased by a hard rubble part
Strong interface interlocking power, in ultra-high performance concrete surface construction macroscopic view and thin sight multi-dimension texture structure, reinforcing interlocking power is with gluing
The synergy of power is tied, meanwhile, with reference to the cohesive action of the binding material of tack coat, upper layer is effectively prevented at basic unit interface
Sliding, is substantially improved anti-slipping property energy, shear behavior and high-temperature stability between ultra-high performance concrete and upper layer.
Below with reference to accompanying drawings, the present invention is further detailed explanation.
Brief description of the drawings
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is that the embedding stone structure disclosed in the preferred embodiment of the present invention between ultra-high performance concrete surface and upper layer shows
It is intended to；
Fig. 2 is the embedding stone structure disclosed in the preferred embodiment of the present invention between ultra-high performance concrete surface and upper layer
One close-up schematic view；
Fig. 3 is the embedding stone structure disclosed in the preferred embodiment of the present invention between ultra-high performance concrete surface and upper layer
Two close-up schematic views.
Marginal data：
1st, ultra-high performance concrete basic unit；2nd, rubble；3rd, convex-concave surface；4th, tack coat；5th, upper layer.
Embodiment
Embodiments of the invention are described in detail below in conjunction with accompanying drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
The present invention discloses the embedding stone structure between a kind of ultra-high performance concrete surface and upper layer, such as Fig. 1-figure first
Shown in 3, including ultra-high performance concrete basic unit 1, tack coat 4 and upper layer 5, tack coat 4 is positioned at ultra-high performance concrete basic unit 1
Above, upper layer 5 is located above tack coat 4, in the present embodiment, between ultra-high performance concrete basic unit 1 and upper layer 5
It is embedding to be furnished with substantial amounts of rubble 2；The one end of rubble 2 is mounted in ultra-high performance concrete basic unit 1, and the other end is then mounted in upper layer
In 5.The upper surface of ultra-high performance concrete basic unit 1 by the extruding of rubble 2 because being formed with a convex-concave surface 3；Rubble 2 and bumps
The laying on surface 3 makes to form interlocking structure between ultra-high performance concrete basic unit 1 and upper layer 5.By this kind of structure, significantly carry
High anti-slipping property energy, shear behavior and high-temperature stability between the surface of ultra-high performance concrete basic unit 1 and upper layer 5.
Wherein, in the present embodiment, rubble 2 is shaped as polyhedron, using quartz sand, and its particle diameter is 4.75mm~9.5mm,
The fiber because ultra-high performance concrete gathers, if rubble is too thick, by serious disturbance surface texture and press-in difficulty；It is too thin to rise not
Interlock action.It is the 60% of the surface area of ultra-high performance concrete basic unit 1 to dispense quantity.Meanwhile, the surface of rubble 2 is clean when in use
Net to dry, insert depth of the rubble 2 in ultra-high performance concrete basic unit 1 is the 3/5 of ballast grain sizes, now, rubble and superelevation
The build-in best results of performance concrete.And the mean depth of male and fomale(M＆F) 3 on the surface of ultra-high performance concrete basic unit 1 is 4mm, surface
Construction depth TD=1.0~2.0mm, it is preferred that the construction depth TD=1.8mm on surface, now with more preferable resistant slide
Effect.
When Specific construction is applied, upper layer 5 can be broken for bituminous concrete, modified asphalt concrete, bitumastic
Stone, epoxy asphalt concrete or Superpave or Novachip one or more kinds of combinations, its thickness be 10mm~
60mm, in the present embodiment, upper layer 5 is using 35mm asphalt-mastic-broken stones (Stone Mastic Asphalt).Optionally,
The paver of upper layer 5 is layer polymerization thing concrete blanket, and its thickness is 6mm~25mm.
Then, the invention discloses the construction party of the embedding stone structure between above-mentioned ultra-high performance concrete surface and upper layer
Method, comprises the following steps：
1) after making ultra-high performance concrete basic unit 1, rubble 2 is dispensed before ultra-high performance concrete basic unit 1 not initial set；
2) rubble 2 is pressed into ultra-high performance concrete basic unit 1, insert depth is the 2/5~3/5 of ballast grain sizes, is formed
Convex-concave surface 3；
3) after the high-temperature steam curing of ultra-high performance concrete basic unit 1, natural cooling carries out surface purging using compressed air, gone
Fall surface laitance and the rubble of loosening；
4) binding material formation tack coat 4 is sprayed on convex-concave surface 3, tack coat 4 selects high viscosity modified pitch or heat
Pitch, 0.8~1.4L/m of its consumption2, or select modified emulsifying asphalt, 0.3~0.6L/m of consumption2；
5) upper layer 5 is set on the convex-concave surface 3 in ultra-high performance concrete basic unit 1, makes rubble 2 completely and upper layer
5 combine to form entirety, and upper layer 5 uses asphalt.
Optionally, during practice of construction, the step 4 of above-mentioned construction method) in, tack coat 4 uses epoxy resin
Material, consumption is 0.9~1.3kg/m2, step 5) in, upper layer 5 uses polymer concrete, can also reach excellent effect
Really.
Further, in the present embodiment, surface is carried out to the ultra-high performance concrete smooth surface after shaping, ball blast and embedding stone
Texture across comparison is tested, as a result as shown in table 1 (wherein smooth surface is that ultra-high performance concrete surface is not dealt with)：
The ultra-high performance concrete surface texture construction depth of table 1
| Surface type | Smooth surface | Cutting | Ball blast | Embedding stone |
| TD/mm | 0.51 | 0.66 | 0.52~0.60 | 1.0~2.0 |
As can be seen from Table 1, after ultra-high performance concrete shotblasting, its surface texture depth TD is slightly above undressed
Smooth surface, but substantially not as good as the effect of embedding stone (being embedded in rubble 2).
Meanwhile, ball blast method and embedding stone method are carried out on shearing strength across comparison experiment, ultra-high performance concrete and pitch
(wherein, ball blast 1 refers to using shot-blasting machine to UHPC shotblastings the oblique scissor test result of surface layer interlayer, and surface structure is deep as shown in table 2
Spend TD=0.54mm；Ball blast 2 refers to using shot-blasting machine to UHPC shotblastings, surface texture depth TD=0.58mm；60% embedding stone
The quantity for referring to spreading rubble is the 60% of the surface area of ultra-high performance concrete basic unit 1, and ballast grain sizes are 4.75mm~9.5mm；
80% embedding stone refer to dispense rubble quantity be the surface area of ultra-high performance concrete basic unit 1 80%, ballast grain sizes be 4.75mm~
9.5mm。):
The ultra-high performance concrete of table 2 and the oblique scissor test result of asphalt uplayer interlayer
As can be seen from Table 2, under ball blast mode, ultra-high performance concrete and asphalt uplayer shearing strength at intersection during normal temperature (20 DEG C)
Intensity is met under engine request, high temperature (60 DEG C) up to 0.71~0.80MPa, and inter-layer shearing strength is 0.41~0.45MPa,
Thus there is high-temperature stability deficiency and the risk of inter-laminar shear failure occur；But embedding cubic meter of stone formula is used, not only tiltedly cut intensity
Much larger than other method testing results, and its minimum affected by the high temperature, with obvious advantage.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. the embedding stone structure between a kind of ultra-high performance concrete surface and upper layer, including ultra-high performance concrete basic unit (1),
Rubble (2), tack coat (4) and the upper layer (5) of ultra-high performance concrete basic unit (1) surface build-in；Tack coat (4) is located at described
Ultra-high performance concrete basic unit (1) and the top on the surface of rubble (2) formation, the upper layer (5) are located at the tack coat (4)
Above, it is characterised in that one end of the rubble (2) is mounted in the ultra-high performance concrete basic unit (1), and the other end
It is then raised to the upper layer (5)；The upper surface of the ultra-high performance concrete basic unit (1) is because of the extruding by the rubble (2)
And form convex-concave surface (3)；The laying of the rubble (2) and convex-concave surface (3) make the ultra-high performance concrete basic unit (1) with
Macroscopic view is formed between upper layer (5) and carefully sees multiple dimensioned interlocking structure.
2. the embedding stone structure between ultra-high performance concrete surface according to claim 1 and upper layer, it is characterised in that
Surface texture depth TD=1.0~2.0mm of the ultra-high performance concrete basic unit (1).
3. the embedding stone structure between ultra-high performance concrete surface and upper layer according to any one of claim 1-2,
Characterized in that, insert depth of the rubble (2) in ultra-high performance concrete basic unit (1) is the 2/5~3/5 of its particle diameter.
4. the embedding stone structure between ultra-high performance concrete surface and upper layer according to any one of claim 1-2,
Characterized in that, the rubble (2) is shaped as polyhedron, its material is quartz sand or basalt, its particle diameter is 4.75~
9.5mm；The mortar consistent with ultra-high performance concrete is dried or wrapped to rubble (2) clean surface.
5. the embedding stone structure between ultra-high performance concrete surface and upper layer according to any one of claim 1-2,
Characterized in that, the spreading quantity of the rubble (2) for ultra-high performance concrete basic unit (1) surface area 40%~
80%.
6. the embedding stone structure between ultra-high performance concrete surface and upper layer according to any one of claim 1-2,
Characterized in that, convex-concave surface (3) average depression depth is 3~6mm.
7. the embedding stone structure between ultra-high performance concrete surface and upper layer according to any one of claim 1-2,
Characterized in that, the upper layer (5) is bituminous concrete, modified asphalt concrete, asphalt-mastic-broken stone, bituminous epoxy are mixed
The asphalt of any or multiple combinations formation of solidifying soil, Superpave or Novachip, the asphalt
Thickness control be 10mm~60mm；Or the upper layer (5) is layer polymerization thing cover, the layer polymerization thing cover
Thickness control is 6mm~25mm.
8. the embedding stone structure between ultra-high performance concrete surface and upper layer according to any one of claim 1-2,
Characterized in that, under the normal temperature of the ultra-high performance concrete basic unit (1) and upper layer (5) interlayer tiltedly cut intensity 1.5MPa with
On, the ultra-high performance concrete basic unit (1) and 60 DEG C of interlayers of upper layer (5) tiltedly cut intensity in more than 1.0MPa.
9. a kind of embedding stone structure as any one of claim 1-8 between ultra-high performance concrete surface and upper layer
Construction method, it is characterised in that comprise the following steps：
1) after making ultra-high performance concrete basic unit (1), rubble is dispensed before ultra-high performance concrete basic unit (1) not initial set
(2)；
2) rubble (2) is pressed into ultra-high performance concrete basic unit (1), insert depth is the 2/5~3/5 of rubble (2) particle diameter, shape
Into convex-concave surface (3)；
3) after ultra-high performance concrete basic unit (1) high-temperature steam curing, natural cooling carries out surface purging using compressed air, removed
Surface laitance and the rubble of loosening (2)；
4) binding material formation tack coat (4) is sprayed on convex-concave surface (3), the tack coat (4) is modified drip from high viscosity
Blue or green or heated bitumen, 0.8~1.4L/m of its consumption2, or select modified emulsifying asphalt, 0.3~0.6L/m of consumption2；
5) on the convex-concave surface (3) in ultra-high performance concrete basic unit (1) set upper layer (5), make rubble (2) completely with it is upper
Surface layer (5) combines to form entirety, and the upper layer (5) uses asphalt.
10. construction method according to claim 9, it is characterised in that the step 4) in, tack coat (4) uses epoxy
Resinous material, consumption is 0.9~1.3kg/m2, the step 5) in, upper layer (5) uses polymer concrete.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710032448.5A CN107059529A (en) | 2017-01-16 | 2017-01-16 | Embedding stone structure and construction method between ultra-high performance concrete surface and upper layer |
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Family
ID=59597916
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