CN101597878B - Composite type pavement structure and pavement method thereof - Google Patents

Composite type pavement structure and pavement method thereof Download PDF

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Publication number
CN101597878B
CN101597878B CN2009100406156A CN200910040615A CN101597878B CN 101597878 B CN101597878 B CN 101597878B CN 2009100406156 A CN2009100406156 A CN 2009100406156A CN 200910040615 A CN200910040615 A CN 200910040615A CN 101597878 B CN101597878 B CN 101597878B
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substrate
sub
layer
lap
asphalt
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CN101597878A (en
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葛折圣
张肖宁
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Guangzhou Daxiang Ultrathin Pavement Technology Development Co ltd
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South China University of Technology SCUT
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Abstract

The invention discloses a composite type pavement structure and a pavement method, and relates to a road engineering structure and a construction method thereof. In the invention, the thermal expansion coefficient, the cement concrete and the fiber-reinforced composite material substrate which performance is near to the steel plate are adopted to reinforce for the bottom surface of the asphalt layer; thus improving the performance of anti-fatigue and anti-reflecting crack of the asphalt surface course, effectively preventing the lower bearing layer from being eroded due to infiltration of the rain water from the asphalt surface course, avoiding bonding problem between the asphalt surface course and the cement concrete or the steel plate, increasing stiffness of the steel bridge surface, and particularly reinforcing the steel bridge surface the steel plate of which has insufficient thickness, so as to reduce the thickness of the asphalt surface course, avoid the damages, such as cracking and falling of the asphalt pavement layer caused by the insufficient thickness of the steel bridge surface and the like.

Description

A kind of combined type paving structure and paving method thereof
Technical field
The present invention relates to a kind of highway construction structure and job practices thereof, combined type paving structure and the job practices thereof of particularly a kind of making on cement concrete pavement, cement concrete bridge deck and steel bridge face is specifically related to a kind of combined type paving structure and paving method thereof.
Background technology
For a long time, bonding and waterproof problem are technical barriers of failing fine solution always between the cement concrete pavement of asphalt surface course and sub-layer, cement concrete bridge deck and the steel bridge face.Prior art often adopts sprays a certain amount of mulseal, modified bitumen or other water-repellent paints water-proof tack coat as above-mentioned sub-layer, because the hydrophily of sub-layer material, under long-term traffic load effect, water-proof tack coat peels off easily, loose, causes the following of rainwater to ooze.Thereby weakened the intensity of sub-layer, not only caused come to nothing at the bottom of the Cement Concrete Pavement Slab, the purt slurry, cement concrete bridge deck corrosion of steel bar, multiple diseases phenomenons such as steel bridge face corrosion.And, caused asphalt surface course to produce cracking, loose, hole groove, the disease phenomenon such as come off.Have a strong impact on the functional performance on road surface, shortened service life of road surface.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of combined type paving structure and paving method thereof are provided.By between asphalt surface course and sub-layer, being provided with the substrate of composite material, mat formation layer structural strengthening and good waterproof effect have been reached.The problem to be solved in the present invention is: the connectivity problem between (1) asphalt surface course and cement concrete pavement, cement concrete bridge deck, the steel bridge face; (2) prevent that rainwater is by oozing the sub-layer problem that corrodes under the asphalt surface course.
Purpose of the present invention is achieved through the following technical solutions:
A kind of combined type paving structure comprises adhesion coating 2 and asphalt surface course 3 on substrate 1, the plate from bottom to top.
Described substrate 1 is integrated, and adopts the sheet material of fibre-reinforced composite material; The profile of substrate 1 is that two overlapping cuboids stagger along contact surface is parallel, the originally overlapping limit identical distance that all staggers, and distance is 10cm~30cm.Described parallel staggering is that original overlapping limit is still parallel.
Substrate thickness is 2~20mm; Every plate length is 20~30m, and width is 3~6m;
When sub-layer is cement concrete pavement or cement concrete bridge deck, can adopt the mode of being slidingly connected between substrate and the sub-layer, be that 2.5~3.5 medium coarse sand separates substrate and sub-layer promptly with the thick fineness modulus of 5~10cm;
When sub-layer was cement concrete pavement, cement concrete bridge deck or steel bridge face, available modified bitumen or epoxy resin were bonded in sub-layer 4 surfaces with substrate 1 and form adhesion coating 7 under the plates.
Adhesion coating 2 adopts the rubble of the cleaning of SBS (styrene butadiene styrene block copolymer (SBS)) modified bitumen and 9.5~13.6mm particle diameter on the plate.Asphalt surface course 3 thickness are 3~18cm.
Another object of the present invention is to provide a kind of paving method of combined type paving structure.
A kind of paving method of combined type paving structure may further comprise the steps:
(1) sub-layer surfacing
For cement concrete pavement or cement concrete bridge deck, when adopting sliding type to connect substrate and sub-layer, earlier that sub-layer 4 surface cleanings are clean; Lay the medium coarse sand of 5~10cm again on the sub-layer surface; Play the compatible deformation effect;
(2) laying or adhesive substrate
When adopting sliding type to connect substrate and sub-layer, substrate, health 24~48h are directly laid in the sub-layer surface behind sanding.
The substrate laying is in proper order: according to sub-layer 4 surperficial elevations, laterally laid toward the high track of elevation by the low track of elevation; Vertically the toe from longitudinal gradient begins to lay toward the top, slope.
The vertical and horizontal of substrate adopt overlapping mode to connect, and lap width is 10cm~30cm, and the substrate lap-joint in different tracks adopts epoxy bond, promptly at the contact surface 8 of two substrate 1 lap-joints, according to 0.5~1.0kg/m 2Amount roller coating epoxy resin; Adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, promptly at the contact surface 8 of two substrate 1 lap-joints according to 1.5~2.0kg/m 2Amount roller coating SBS modified bitumen.
(3) adhesion coating on the construction plate
Adopt intelligent distribution vehicle according to 2.0~2.5kg/m 2Amount spray the SBS modified bitumen; Use rubble truck spreader spreading 8~10kg/m again 2The rubble of cleaning of 9.5~13.6mm particle diameter, roll;
(4) construction asphalt surface course
Method construction asphalt surface course according to " asphalt highway construction technique normalizing " regulation.
The paving method of a kind of combined type paving structure of the present invention can also may further comprise the steps:
(1) sub-layer surfacing
For cement concrete pavement and cement concrete bridge deck, when adopting the bonding mode of modified bitumen or epoxy resin, remove sub-layer surface laitance with milling machine earlier, the roughness control on the sub-layer surface after the milling is in 3mm, and dry on the surface; For the steel bridge face, carry out impeller blasting with automatic shot-blasting machine earlier, be coated with rustproof paint, health 24h~48h;
(2) laying or adhesive substrate
When adopting the bonding mode of modified bitumen or epoxy resin,, adopt intelligent distribution vehicle according to 1.5~2.0kg/m on the sub-layer surface 2Amount spray the SBS modified bitumen, lay substrate then, health 24h~48h; Perhaps on the sub-layer surface, spray 0.5~1.5kg/m 2Epoxy resin, lay substrate then, health 48h~60h;
The substrate laying is in proper order: according to sub-layer surface elevation, laterally laid toward the high track of elevation by the low track of elevation; Vertically the toe from longitudinal gradient begins to lay toward the top, slope;
The vertical and horizontal of substrate 1 adopt overlapping mode to connect, and lap width is 10cm~30cm, and the substrate lap-joint in different tracks adopts epoxy bond, promptly at the contact surface 8 of the lap-joint of two substrates 1 according to 0.5~1.0kg/m 2Amount roller coating epoxy resin; Adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, promptly at the contact surface 8 of the lap-joint of two substrates 1 according to 1.5~2.0kg/m 2Amount roller coating SBS modified bitumen.
(3) adhesion coating on the construction plate
Adopt intelligent distribution vehicle according to 2.0~2.5kg/m 2Amount spray the SBS modified bitumen; Then, with rubble truck spreader spreading 8~10kg/m 2The rubble of cleaning of 9.5~13.6mm particle diameter, roll;
(4) construction asphalt surface course
Method construction asphalt surface course according to " asphalt highway construction technique normalizing " regulation.
The described rubber-tyred roller that rolls to using 16t rolls 2 times.
The present invention is with respect to advantage and beneficial effect that prior art had:
The present invention adopts the substrate of the approaching fibre-reinforced composite material of coefficient of thermal expansion and cement concrete and steel plate that reinforcement is carried out in the bitumen layer bottom surface, has improved asphalt surface course antifatigue and antireflection crack performance; Prevented that effectively rainwater is by oozing the erosion sub-layer under the asphalt surface course; Avoided the adhesion problem between asphalt surface course and cement concrete or the steel plate; Can improve bridge floor rigidity for the steel bridge face, especially the steel bridge face for steel plate thickness deficiency can play reinforcement effect, thus attenuate the thickness of asphalt surface course, avoid the asphalt mixture surfacing that causes owing to steel bridge face insufficient rigidity cracking, destruction such as come off.
Description of drawings
Fig. 1 is a combined type paving structure schematic diagram;
Fig. 2 is a monolithic substrate vertical view;
Fig. 3 is a monolithic substrate elevation;
Fig. 4 is the mode that the is slidingly connected schematic diagram of combined type paving structure and sub-layer;
Fig. 5 is bonded in the combined type paving structure for modified bitumen or epoxy resin the connected mode schematic diagram on sub-layer surface;
Fig. 6 is 4 substrate splicing vertical views;
Fig. 7 is a different track substrate lap-joint elevation;
Fig. 8 is along the vertical adjacent substrate of route lap-joint lateral view.
The specific embodiment
Below in conjunction with example the present invention is described in further detail:
Embodiment 1
The combined type paving structure and the construction technology thereof that are slidingly connected on the old cement concrete pavement
(1) structure and material
Adopt paving structure shown in Figure 1, comprise adhesion coating 2 and asphalt surface course 3 on substrate 1, the plate from bottom to top.
Substrate 1 adopts coefficient of thermal expansion and the approaching glass epoxy of cement concrete; The substrate technical indicator of fibre reinforced composites sees Table 1, and as Fig. 2, shown in Figure 3, substrate 1 is integrated, and the profile of substrate 1 is that two overlapping cuboids stagger along contact surface is parallel, the originally overlapping limit identical distance that all staggers, and distance is 20cm.Substrate thickness is 20mm; Every plate length is 30m, and width is 3.75m;
To adopt and to spill the cloth amount be 2.5kg/m to adhesion coating on the plate 2SBS modified bitumen and 10kg/m 2The limestone gravel of cleaning of 9.5~13.6mm particle diameter.Surface layer is the thick AC-20C type of a 6cm bituminous mixture under the pitch, and upper layer is the thick AC-13C type of a 4cm bituminous mixture.Adopt the mode that is slidingly connected between substrate and the sub-layer.As shown in Figure 4, lay the thick medium coarse sand of 10cm, play the compatible deformation effect.
Table 1
Hot strength (MPa) Compressive strength (MPa) Bending strength (MPa) Shear strength (MPa) Hardness Barcol Density (kg/m 3) Coefficient of thermal expansion (1/ ℃) Coefficient of thermal conductivity W/ (m ℃)
85 60 128 46 49 1650 1.2×10 -5 0.56
The paving method of combined type paving structure of the present invention comprises:
(1) sub-layer surfacing
Earlier that the cleaning of sub-layer cement concrete surface is clean; Then, lay the thick medium coarse sand of 10cm, play the compatible deformation effect.
(2) lay substrate
Substrate, health 48h are directly laid in sub-layer surface behind sanding.
The substrate laying is in proper order: according to sub-layer 4 surperficial elevations, laterally laid toward the high track of elevation by the low track of elevation; Vertically the toe from longitudinal gradient begins to lay toward the top, slope.
As Fig. 6, Fig. 7, shown in Figure 8, the vertical and horizontal of substrate adopt overlapping mode to connect.Lap width is 20cm, and the substrate lap-joint in different tracks adopts epoxy bond, promptly at the contact surface 8 of two substrate 1 lap-joints, according to 1.0kg/m 2Roller coating epoxy resin; Adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, promptly at the contact surface 8 of two substrate 1 lap-joints according to 2.0kg/m 2Roller coating SBS modified bitumen.
(3) adhesion coating on the construction plate
Adopt intelligent distribution vehicle according to 2.5kg/m 2Amount spray the SBS modified bitumen; Use rubble truck spreader spreading 10kg/m again 2The rubble of cleaning of 9.5~13.6mm particle diameter, roll 2 times with the rubber-tyred roller of 16t;
(4) construction asphalt surface course
The method construction asphalt surface course of (JTGF40-2004) stipulating according to " asphalt highway construction technique normalizing ".
Embodiment 2
With combined type paving structure and the construction technology thereof of epoxy bond on the steel bridge face
(1) structure and material
Adopt paving structure shown in Figure 5, form by adhesion coating 7 under adhesion coating 2, the plate on substrate 1, the plate and asphalt surface course 3.Substrate adopts coefficient of thermal expansion and the approaching glass epoxy of steel plate.Technical indicator sees Table 1.As Fig. 2, shown in Figure 3, substrate 1 is integrated, and the profile of substrate 1 is that two overlapping cuboids stagger along contact surface is parallel, the originally overlapping limit identical distance that all staggers, and distance is 20cm.Substrate thickness is 20mm; Every plate length is 30m, and width is 3.75m.
To adopt and to spill the cloth amount be 2.0kg/m to adhesion coating on the plate 2SBS modified bitumen and 8kg/m 2The limestone gravel of cleaning of 9.5~13.6mm particle diameter.Surface layer is the thick AC-20C type of a 6cm bituminous mixture under the pitch, and upper layer is the thick SMA-13 type of a 4cm bituminous mixture.With epoxy resin do under the plate adhesion coating 7 with substrate bonding on the steel bridge face.
(2) construction technology
(1) sub-layer surfacing
Remove foreign material and dust on the steel bridge face earlier; Wash bridge floor with clear water again; After treating that the surface is dried, carry out impeller blasting, make the steel bridge face clean and coarse with automatic shot-blasting machine; Then, with high pressure airless spray equipment disposable spray finishing build be the epoxy zinc-rich lacquer of 60~80 μ m.
(2) laying or adhesive substrate
After treating epoxy zinc-rich lacquer health 24h, spray 1.5kg/m thereon 2Epoxy resin, lay substrate then, the next procedure of constructing behind the health 48h.
The substrate laying is in proper order: according to the bridge floor elevation, laterally laid toward the high track of elevation by the low track of elevation; Vertically the toe from longitudinal gradient begins to lay toward the top, slope.
As Fig. 6, Fig. 7, shown in Figure 8, the vertical and horizontal of substrate 1 adopt overlapping mode to connect.Lap width is 30cm, and the substrate lap-joint in different tracks adopts epoxy bond, promptly at the contact surface 8 of the lap-joint of two substrates 1 according to 0.5kg/m 2Amount roller coating epoxy resin; Adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, promptly at the contact surface 8 of the lap-joint of two substrates 1 according to 1.5kg/m 2Amount roller coating SBS modified bitumen.
(3) adhesion coating on the construction plate
Adopt intelligent distribution vehicle according to 2.0kg/m 2Spray the SBS modified bitumen; Then, with rubble truck spreader spreading 10kg/m 2The rubble of cleaning of 9.5~13.6mm particle diameter, use the rubber-tyred roller of 16t to roll 2 times;
(4) construction asphalt surface course
Method construction asphalt surface course according to " asphalt highway construction technique normalizing " regulation.
The present invention is provided with the substrate of fibre-reinforced composite material between asphalt surface course and sub-layer, by adopting this structure can obtain following effect: the one, owing to the strengthening action of substrate, thereby improved road structure antifatigue and antireflection crack performance to the bitumen layer bottom surface; The 2nd, because the waterproof action of substrate, thereby prevented that effectively rainwater is by oozing the erosion sub-layer under the asphalt surface course; The 3rd, because substrate has improved the rigidity of steel bridge face, thereby the thickness of asphalt mixture surfacing on can attenuate steel bridge face is saved construction costs; The 4th, substrate can play reinforcement effect to the steel bridge face of steel plate thickness deficiency, thus avoid the asphalt mixture surfacing that causes owing to steel bridge face insufficient rigidity cracking, destruction such as come off.
When adopting sliding type to connect substrate and sub-layer, owing between substrate and sub-layer, laid the thick medium coarse sand of 5~10cm, played coordination sub-layer metamorphosis, thereby reduced the influence of sub-layer distortion asphalt surface course.
Because the coefficient of thermal expansion of institute's employing substrate and cement concrete and steel plate are approaching, thereby obtained effect at thermal stresses effect infrabasal plate and sub-layer compatible deformation.
Because adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, adjacent substrate has certain deformation leeway, under the thermal stresses effect, the paving structure breakoff phenomenon that substrate arches upward and is out of shape and causes can not appear.

Claims (3)

1. the paving method of a combined type paving structure may further comprise the steps:
(1) sub-layer surfacing
For cement concrete pavement or cement concrete bridge deck, earlier that the cleaning of sub-layer (4) surface is clean; Lay the medium coarse sand of 5~10cm again on the sub-layer surface;
(2) laying or adhesive substrate
Substrate, health 24~48h are directly laid in sub-layer surface behind sanding;
The substrate laying is in proper order: according to the surperficial elevation of sub-layer (4), laterally laid toward the high track of elevation by the low track of elevation; Vertically the toe from longitudinal gradient begins to lay toward the top, slope;
The vertical and horizontal of substrate adopt overlapping mode to connect, and lap width is 10cm~30cm, and the substrate lap-joint in different tracks adopts epoxy bond, promptly at the contact surface (8) of two substrates (1) lap-joint, according to 0.5~1.0kg/m 2Amount roller coating epoxy resin; Adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, promptly at the contact surface (8) of the lap-joint of two substrates (1) according to 1.5~2.0kg/m 2Amount roller coating SBS modified bitumen;
(3) adhesion coating on the construction plate
Adopt intelligent distribution vehicle according to 2.0~2.5kg/m 2Amount spray the SBS modified bitumen; Use rubble truck spreader spreading 8~10kg/m again 2The rubble of cleaning of 9.5~13.6mm particle diameter, roll;
(4) construction asphalt surface course
Method construction asphalt surface course according to " asphalt highway construction technique normalizing " regulation.
2. the paving method of a combined type paving structure may further comprise the steps:
(1) sub-layer surfacing
For cement concrete pavement and cement concrete bridge deck, remove sub-layer surface laitance with milling machine earlier, the roughness control on the sub-layer surface after the milling is in 3mm, and dry on the surface; For the steel bridge face, carry out impeller blasting with automatic shot-blasting machine earlier, be coated with rustproof paint, health 24h~48h;
(2) laying or adhesive substrate
On the sub-layer surface, adopt intelligent distribution vehicle according to 1.5~2.0kg/m 2Amount spray the SBS modified bitumen, lay substrate then, health 24h~48h; Perhaps on the sub-layer surface, spray 0.5~1.5kg/m 2Epoxy resin, lay substrate then, health 48h~60h;
The substrate laying is in proper order: according to sub-layer surface elevation, laterally laid toward the high track of elevation by the low track of elevation; Vertically the toe from longitudinal gradient begins to lay toward the top, slope;
The vertical and horizontal of substrate (1) adopt overlapping mode to connect, and lap width is 10cm~30cm, and the substrate lap-joint in different tracks adopts epoxy bond, promptly at the contact surface (8) of the lap-joint of two substrates (1) according to 0.5~1.0kg/m 2Amount roller coating epoxy resin; Adopt SBS modified bitumen bonding along the vertical adjacent substrate of route lap-joint, promptly at the contact surface (8) of the lap-joint of two substrates (1) according to 1.5~2.0kg/m 2Amount roller coating SBS modified bitumen;
(3) adhesion coating on the construction plate
Adopt intelligent distribution vehicle according to 2.0~2.5kg/m 2Amount spray the SBS modified bitumen; Then, with rubble truck spreader spreading 8~10kg/m 2The rubble of cleaning of 9.5~13.6mm particle diameter, roll;
(4) construction asphalt surface course
Method construction asphalt surface course according to " asphalt highway construction technique normalizing " regulation.
3. the paving method of a kind of combined type paving structure according to claim 1 and 2 is characterized in that, the described rubber-tyred roller that rolls to using 16t rolls 2 times.
CN2009100406156A 2009-06-26 2009-06-26 Composite type pavement structure and pavement method thereof Expired - Fee Related CN101597878B (en)

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Application Number Priority Date Filing Date Title
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CN101597878B true CN101597878B (en) 2011-07-20

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CN103321121B (en) * 2013-07-02 2015-12-23 东南大学 A kind of Perpetual Pavements Structural based on uniform settlement
CN105821735A (en) * 2015-01-08 2016-08-03 陈云鹤 Technology for enhancing crack-resistance performance of cement concrete pavement by glass fiber mesh
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