CN100564684C - A kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method - Google Patents
A kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method Download PDFInfo
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- CN100564684C CN100564684C CNB2007100530258A CN200710053025A CN100564684C CN 100564684 C CN100564684 C CN 100564684C CN B2007100530258 A CNB2007100530258 A CN B2007100530258A CN 200710053025 A CN200710053025 A CN 200710053025A CN 100564684 C CN100564684 C CN 100564684C
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Abstract
The present invention relates to a kind of paving method of steel box girder bridge bridge deck pavement.A kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method is characterized in that it comprises the steps: that (one) at first carries out derusting by sandblasting to the steel box girder bridge face steel plate and handles; (2) preparation of material: the 1) preparation of high-viscosity modified asphalt; 2) mineral aggregate gradation; 3) preparation of macrovoid bituminous concrete; 4) preparation of thermosetting resin grouting agent; (3) mating formation of bridge deck pavement: 1) the macrovoid bituminous concrete that on the steel box girder bridge face steel plate, paves, pavement thickness is 2～4cm, and carries out final pressure, macrovoid bituminous concrete casing play; When 2) taking advantage of macrovoid bituminous concrete casing play and also be in hot state, utilize the thermosetting resin grouting agent that macrovoid bituminous concrete casing play is irritated and fill out; 3) maintenance was sprayed one deck sticking layer oil after 3 days, and the pitch wearing coat that paves, and wearing coat thickness is 4cm.This paving method has the advantages that interface adhesion is good, construction technology is easy.
Description
Technical field
The invention belongs to the Materials Science and Engineering field, be specifically related to a kind of paving method of steel box girder bridge bridge deck pavement.
Background technology
At present, steel box girder bridge relies on it from heavy and light, economic dispatch significant advantage, is particularly useful for the long-span bridge type, more and more is subjected to developer and designer's favor, and the steel box girder bridge floor paving technology also is developed.Yet, along with automobile quantity constantly increases, particularly go back the more heavy motor truck of ubiquity in China, various violation overload phenomenons are of common occurrence especially, the traffic loading of whole country highway network increases, and existing steel box girder bridge floor paving scheme has exposed its steel plate gradually and the pull-up of mating formation glues, mats formation, and problems such as passing take place under heavy burden for the layer generation crack and the layer of mating formation.Up to now, following three kinds of Steel Bridge Deck Pavement have mainly been formed: (1) cast asphalt concrete GA, this kind bituminous concrete has higher breeze consumption (20%～27%) and high asphalt content (7%～10%), the void content of material is almost nil, can make bitumen layer waterproof, prevent that the tack coat between steel and the asphalt concrete layer from exempting from the damage by water evil, higher because of its bitumen content simultaneously, make its low temperature flexibility better, strong with steel bridge deck compatible deformation performance.But construction equipment is required height, and resistance to elevated temperatures is relatively poor, Jiangyin bridge is introduced GA, yet less than year, early stage well damage just occurred; (2) modified asphalt SMA, on pitch mastic compound basis, further increase coarse aggregate content, thereby the framework compact type structure that good embedding is squeezed between the formation coarse aggregate, and adopt fiber and steel bar reinforced technology, thus SMA to have a thermostability good, the characteristics that antiskid abrasion performance, crack resistance and bleeding are all better, but because SMA adopts the gap gradation mineral aggregate, there is the bad problem that combines between compound and the steel plate, is prone to slippage, gathers around problem such as bag; (3) epoxy resin asphalt EA uses heat-curing resin as bonding agent between steel plate and concrete, can significantly improve steel plate and the adhesive property between the layer of mating formation, and rut and pushing phenomenon obviously reduce during high temperature, have been used for yangtze river in nanjing two bridges.But the low temperature stiffness of epoxy resin is big, ftractures easily when low temperature, and construction is complicated, wayward, and material draws from abroad fully with pavement technique, and cost is higher.Therefore, invent that a kind of both to have had an interface adhesion good, guarantee not unsticking of bituminous concrete and steel plate, the passing of bituminous concrete does not take place under heavy load, can make that again construction technology is easy, the steel box girder bridge floor paving scheme of good economy performance, will make the application of large-span steel box girder bridge face obtain swift and violent development.
Summary of the invention
The object of the present invention is to provide a kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method, this paving method has the advantages that interface adhesion is good, construction technology is easy.
To achieve these goals, technical scheme of the present invention is: a kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method is characterized in that it comprises the steps:
One) at first the steel box girder bridge face steel plate being carried out derusting by sandblasting handles;
Two) preparation of material:
1), the preparation of high-viscosity modified asphalt:
(1) choosing of raw material: high-viscosity modified asphalt is made up of styrene butadiene styrene block copolymer (SBS) (SBS), activating rubber powder, compatible resin, antioxidant and matrix pitch; The mass ratio of matrix pitch, styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant is 100: 7.4～14.5: 2.2～7.6: 2.4～6.7: 0.2～0.5; Wherein, compatible resin is selected rosin glycerol resin, terpene resin or Petropols for use, and antioxidant is selected lead, zinc, carbon black, calcium salt or amine for use, and matrix pitch is selected AH-70 heavy traffic asphaltum or AH-90 heavy traffic asphaltum for use;
Described calcium salt antioxidant is: calcium carbonate or hydrated lime; Described amine antioxidants is: dimethylamine or triethyl group tetramine;
(2) concrete preparation process is: will mix styrene butadiene styrene block copolymer (SBS) and compatible resin after the matrix pitch fusing, under 165～185 ℃ of temperature, stirred 15～20 minutes, adopted emulsify at a high speed cutter high speed shear then 30～50 minutes, rotating speed 4000-6000 rev/min, left standstill 15～20 minutes at 140～160 ℃ then, make its abundant swelling, add activating rubber powder and antioxidant, high speed shear is 15～35 minutes again, promptly makes 60 ℃ of viscosity 〉=80000Pa.s high-viscosity modified asphalt;
2), mineral aggregate gradation:
Mineral aggregate is by gathering materials and filler is formed, and the mass ratio that gathers materials with filler is 100: 2.0～6.4, gathers materials that to select basalt or diabase, filler for use be the limestone breeze, and the maximum particle diameter of mineral aggregate is 16mm, and the mineral aggregate gradation scope of design sees Table 1:
The grading limit of table 1 mineral aggregate
3), the preparation of macrovoid bituminous concrete:
(1) choosing of raw material: the macrovoid bituminous concrete is by mineral aggregate, high-viscosity modified asphalt and fibrous, and mineral aggregate, high-viscosity modified asphalt, quality of fiber ratio are 100: 3.7～5.3: 0～0.6; Described fiber is selected polymer fiber (including but are not limited to polyacrylonitrile fibre, polyester fiber), mineral fibers or lignin fibre for use;
(2) preparation: mineral aggregate, high-viscosity modified asphalt and fiber are mixed stirring, and temperature is 170～185 ℃, and drop temperature is not less than 175 ℃, and void content scope 20～30% gets the macrovoid bituminous concrete;
4), the preparation of thermosetting resin grouting agent:
(1) choosing of raw material: the thermosetting resin grouting agent is made up of epoxy resin, curing compound, thinner and flexibilizer, and each constituent mass is than being epoxy resin: curing compound: thinner: flexibilizer=100: 90～110: 6～15: 1～10;
Described epoxy resin is selected bisphenol A type epoxy resin for use; Described curing compound is selected acid anhydride type curing agent (benzophenone tetracarboxylic dianhydride, methylhexahydrophthalic anhydride or methyl inner methylidyne tetrahydric phthalic anhydride) or amine curing agent (diethylenetriamine or m-xylene diamine) for use; Described thinner is selected acetone, dimethylbenzene, furfural-acetone or alcohol for use; Described flexibilizer is selected polyamide or dibutyl phthalate for use;
(2) preparation: earlier epoxy resin and curing compound are mixed, in 100～200 rev/mins mixer, evenly stirred 3～5 minutes, keep rotating speed constant then, in mixer, add thinner, flexibilizer successively, at the uniform velocity stirred 5～10 minutes, and can make the thermosetting resin grouting agent of viscosity≤0.8Pa.s;
Three), mating formation of bridge deck pavement:
1) the macrovoid bituminous concrete that on the steel box girder bridge face steel plate, paves, pavement thickness is 2～4cm, and carries out final pressure, macrovoid bituminous concrete casing play;
2) encapsulation process is carried out in the side of macrovoid bituminous concrete casing play, when taking advantage of macrovoid bituminous concrete casing play and also being in hot state, utilizing the thermosetting resin grouting agent that macrovoid bituminous concrete casing play is irritated fills out, push till the space of macrovoid bituminous concrete casing play is filled up with vulcanite scraper, the resin filling type asphalt concrete lower floor of mating formation;
3) maintenance is after 3 days, sprays one deck sticking layer oil in the resin filling type asphalt concrete lower floor of mating formation, and the pitch wearing coat that paves, and wearing coat thickness is 4cm; Wearing coat can adopt the SMA-13 or the bituminous mixture types such as AC-13 or OGFC-13 of high-viscosity modified asphalt preparation; The wearing layer material is selected, match ratio design and construction technology reference " asphalt highway construction technique normalizing " (JTG F40-2004).
The present invention at first carries out derusting by sandblasting to the steel box girder bridge face steel plate and handles, macrovoid (20～25%) bituminous concrete (connectivity gap rate 〉=16.0) of one deck 2～4cm high-viscosity modified asphalt of on steel plate, mating formation again preparation, after final pressure is finished, encapsulation process is carried out in concrete side, when taking advantage of bituminous concrete and being in hot state, the epoxy resin grouting material that utilization modulates (irritate the macrovoid bituminous concrete and fill out by viscosity≤1Pa.s), after hole fills up, after waiting to solidify 3d, spreading one deck sticking layer oil repaves the pitch wearing coat that utilizes the high-viscosity modified asphalt preparation of adorning one deck 40mm.The present invention with the macrovoid bituminous concrete casing play of high voidage as parent, its hole utilizes the good thermosetting resin grouting agent of adhesive strength height, high-temperature stability to fill, the thermosetting resin grouting agent by the interconnected pore penetrate into macrovoid bituminous concrete casing play bottom steel plate and and steel plate between tight bond.Resin grouting material is toughness material on the one hand, and it forms inierpeneirating network structure in the big space of bituminous concrete, make the bending resistance of concrete self draw performance to be greatly improved; On the other hand, its main part of resin grouting material forms countless WELDING STUDS structures in bridge deck pavement inside, thereby makes steel plate and bridge deck pavement form firm overall structure.Interface adhesion is good, and retinue property is enhanced, effectively prevent bridge deck pavement under the action of traffic loading slippage, gather around disease such as bag, prolong the application life on road surface.
There is a large amount of interconnected pores in macrovoid bituminous concrete inside, the thermosetting resin grouting agent solidifies between hole, between the hole of macrovoid bituminous concrete, form inierpeneirating network structure, the globality that both ask strengthens, and inierpeneirating network structure forms, be mat formation the layer stress form change, the intensity height of thermosetting resin pouring material, chemical property is stable, high-temperature behavior is good, can be 70 ℃ of not deliquescing, the whole high-temperature stability of layer of mating formation will greatly be improved, solve present stability at high temperature of asphalt mixture deficiency, under summer high temperature environment, be prone to rut, gather around the problem of bag.
The technical indicator of main material of the present invention is as follows:
The performance indications of table 2 high-viscosity modified asphalt
The performance indications of table 3 macrovoid bituminous concrete
The performance indications of table 4 thermosetting resin grouting agent
Table 5 bridge deck pavement performance indications
The specific embodiment
In order to understand the present invention better, further illustrate content of the present invention below in conjunction with embodiment, but content of the present invention not only is confined to the following examples.
Embodiment 1:
A kind of combining structure paving method of steel box girder bridge bridge deck pavement, it comprises the steps:
One) at first the steel box girder bridge face steel plate being carried out derusting by sandblasting handles;
Two) preparation of material:
1), the preparation of high-viscosity modified asphalt:
(1) choosing of raw material: high-viscosity modified asphalt is made up of styrene butadiene styrene block copolymer (SBS) (SBS), activating rubber powder, compatible resin, antioxidant and matrix pitch; The mass ratio of matrix pitch, styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant is 100: 10.6: 3.7: 2.5: 0.3; Wherein, compatible resin is selected rosin glycerol resin for use, and antioxidant is selected carbon black for use, and matrix pitch is selected the AH-70 heavy traffic asphaltum for use;
(2) concrete preparation process is: will mix styrene butadiene styrene block copolymer (SBS) and compatible resin after the matrix pitch fusing, under 170 ℃ of temperature, stirred 18 minutes, adopted emulsify at a high speed cutter high speed shear then 35 minutes, 5500 rev/mins of rotating speeds, left standstill 17 minutes at 140 ℃ then, make its abundant swelling, add activating rubber powder and antioxidant, high speed shear is 25 minutes again, promptly makes 60 ℃ of viscosity 〉=80000Pa.s high-viscosity modified asphalt;
2), mineral aggregate gradation:
Mineral aggregate is by gathering materials and filler is formed, and the mass ratio that gathers materials with filler is 100: 3.2, gathers materials and selects diabase for use, and filler is the limestone breeze, and the maximum particle diameter of mineral aggregate is 16mm, and the mineral aggregate gradation scope of design sees Table 6:
The grading limit of table 6 mineral aggregate
3), the preparation of macrovoid bituminous concrete:
(1) choosing of raw material: the macrovoid bituminous concrete is by mineral aggregate, high-viscosity modified asphalt and fibrous, and mineral aggregate, high-viscosity modified asphalt, quality of fiber ratio are 100: 5.1: 0.2; Described fiber is selected polyester fiber for use;
(2) preparation: mineral aggregate, high-viscosity modified asphalt and fiber are mixed stirring, and temperature is 180 ℃, and drop temperature is 180 ℃, and void content scope 23.4% gets the macrovoid bituminous concrete;
4), the preparation of thermosetting resin grouting agent:
(1) choosing of raw material: the thermosetting resin grouting agent is made up of epoxy resin, curing compound, thinner, flexibilizer, and each constituent mass is than being epoxy resin: curing compound: thinner: flexibilizer=100: 100: 6: 5;
Described epoxy resin is selected bisphenol A type epoxy resin for use; Described curing compound is selected acid anhydride type curing agent (benzophenone tetracarboxylic dianhydride) for use; Described thinner is selected dimethylbenzene for use; Described flexibilizer is selected dibutyl phthalate for use;
(2) preparation: earlier epoxy resin and curing compound are mixed, in 150 rev/mins mixer, evenly stirred 3 minutes, keep rotating speed constant then, in mixer, add thinner, flexibilizer successively, at the uniform velocity stirred 6 minutes, and can make the thermosetting resin grouting agent of viscosity 0.725Pa.s;
Three), mating formation of bridge deck pavement:
1) the macrovoid bituminous concrete is mated formation on the steel box girder bridge face steel plate with paver, pavement thickness is 3cm, and carries out final pressure, gets macrovoid bituminous concrete casing play, and construction technology is identical with general open gradation bituminous mixture;
2) finish the rolling of macrovoid bituminous concrete casing play after, encapsulation process is carried out in macrovoid bituminous concrete casing play side, when taking advantage of asphalt concrete layer and also being in hot state, thermosetting resin grouting agent (under the normal pressure) is poured on the macrovoid bituminous concrete casing play, push till the space of macrovoid bituminous concrete casing play is filled up with vulcanite scraper, obtain the resin filling type asphalt concrete lower floor of mating formation;
3) maintenance is after 3 days, sprays one deck sticking layer oil in the resin filling type asphalt concrete lower floor of mating formation, and the pitch wearing coat that paves, and wearing coat thickness is 4cm, and the pitch wearing coat adopts the SMA-13 bituminous mixture of high-viscosity modified asphalt preparation.Described pitch wearing coat is the upper layer of mating formation.
On steel box girder bridge face, adopt above method to mat formation, the experimental test performance is prepared as in the usable material chamber: Marshall stability is 30kN, dynamic stability is 17800 times/mm, adhesion strength between bridge deck pavement (bituminous mixture) and steel plate reaches 2.9Mpa, and the steel plate assembly can stand fatigue test 2,200,000 times.
Embodiment 2:
A kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method, it comprises the steps:
One) at first the steel box girder bridge face steel plate being carried out derusting by sandblasting handles;
Two) preparation of material:
1), the preparation of high-viscosity modified asphalt:
(1) choosing of raw material: high-viscosity modified asphalt is made up of styrene butadiene styrene block copolymer (SBS) (SBS), activating rubber powder, compatible resin, antioxidant and matrix pitch; The mass ratio of matrix pitch, styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant is 100: 7.4: 2.2: 2.4: 0.2; Wherein, compatible resin is selected terpene resin for use, and antioxidant is selected lead for use, and matrix pitch is selected the AH-70 heavy traffic asphaltum for use;
(2) concrete preparation process is: will mix styrene butadiene styrene block copolymer (SBS) and compatible resin after the matrix pitch fusing, under 165 ℃ of temperature, stirred 15 minutes, adopted emulsify at a high speed cutter high speed shear then 30 minutes, 4000 rev/mins of rotating speeds, left standstill 15 minutes at 140 ℃ then, make its abundant swelling, add activating rubber powder and antioxidant, high speed shear is 15 minutes again, promptly makes 60 ℃ of viscosity 〉=70000Pa.s high-viscosity modified asphalt;
2), mineral aggregate gradation:
Mineral aggregate is by gathering materials and filler is formed, and the mass ratio that gathers materials with filler is 100: 2.0, gathers materials and selects basalt for use, and filler is the limestone breeze, and the maximum particle diameter of mineral aggregate is 16mm, and the mineral aggregate gradation scope of design sees Table 7:
The grading limit of table 7 mineral aggregate
3), the preparation of macrovoid bituminous concrete:
(1) choosing of raw material: the macrovoid bituminous concrete is by mineral aggregate, high-viscosity modified asphalt and fibrous, and mineral aggregate, high-viscosity modified asphalt, quality of fiber ratio are 100: 3.7: 0; Described fiber is selected polymer fiber (polyacrylonitrile fibre) for use;
(2) preparation: mineral aggregate, high-viscosity modified asphalt and fiber are mixed stirring, and temperature is 170 ℃, and drop temperature is 175 ℃, and void content scope 20～30% gets the macrovoid bituminous concrete;
4), the preparation of thermosetting resin grouting agent:
(1) choosing of raw material: the thermosetting resin grouting agent is made up of epoxy resin, curing compound, thinner and flexibilizer, and each constituent mass is than being epoxy resin: curing compound: thinner: flexibilizer=100: 90: 8: 3;
Described epoxy resin is selected bisphenol A type epoxy resin for use; Described curing compound is selected acid anhydride type curing agent (methylhexahydrophthalic anhydride) for use; Described thinner is selected acetone for use; Described flexibilizer is selected polyamide for use;
(2) preparation: earlier epoxy resin and curing compound are mixed, in 100 rev/mins mixer, evenly stirred 3 minutes, keep rotating speed constant then, in mixer, add thinner, flexibilizer successively, at the uniform velocity stirred 5 minutes, and can make the thermosetting resin grouting agent of viscosity 0.635Pa.s;
Three), mating formation of bridge deck pavement:
1) the macrovoid bituminous concrete that on the steel box girder bridge face steel plate, paves, pavement thickness is 2cm, and carries out final pressure, macrovoid bituminous concrete casing play; Construction technology is identical with general open gradation bituminous mixture;
2) finish the rolling of macrovoid bituminous concrete casing play after, encapsulation process is carried out in macrovoid bituminous concrete casing play side, when taking advantage of asphalt concrete layer and also being in hot state, thermosetting resin grouting agent (under the normal pressure) is poured on the macrovoid bituminous concrete casing play, push till the space of macrovoid bituminous concrete casing play is filled up with vulcanite scraper, obtain the resin filling type asphalt concrete lower floor of mating formation;
3) maintenance is after 3 days, sprays one deck sticking layer oil in the resin filling type asphalt concrete lower floor of mating formation, and the pitch wearing coat that paves, and pitch wearing coat thickness is 4cm; The pitch wearing coat adopts the AC-13 bituminous mixture of high-viscosity modified asphalt preparation.
On steel box girder bridge face, adopt above method to mat formation, the experimental test performance is prepared as in the usable material chamber: Marshall stability is 28kN, dynamic stability is 18400 times/mm, adhesion strength between bridge deck pavement (bituminous mixture) and steel plate reaches 3.1Mpa, and the steel plate assembly can stand fatigue test 2,200,000 times.
Embodiment 3:
A kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method, it comprises the steps:
One) at first the steel box girder bridge face steel plate being carried out derusting by sandblasting handles;
Two) preparation of material:
1), the preparation of high-viscosity modified asphalt:
(1) choosing of raw material: high-viscosity modified asphalt is made up of styrene butadiene styrene block copolymer (SBS) (SBS), activating rubber powder, compatible resin, antioxidant and matrix pitch; The mass ratio of matrix pitch, styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant is 100: 14.5: 7.6: 6.7: 0.5; Wherein, compatible resin is selected Petropols for use, and antioxidant is selected zinc for use, and matrix pitch is selected the AH-90 heavy traffic asphaltum for use;
(2) concrete preparation process is: will mix styrene butadiene styrene block copolymer (SBS) and compatible resin after the matrix pitch fusing, under 185 ℃ of temperature, stirred 20 minutes, adopted emulsify at a high speed cutter high speed shear then 50 minutes, 6000 rev/mins of rotating speeds, left standstill 20 minutes at 160 ℃ then, make its abundant swelling, add activating rubber powder and antioxidant, high speed shear is 35 minutes again, promptly makes 60 ℃ of viscosity 〉=70000Pa.s high-viscosity modified asphalt;
2), mineral aggregate gradation:
Mineral aggregate is by gathering materials and filler is formed, and the mass ratio that gathers materials with filler is 100: 6.4, gathers materials and selects diabase for use, and filler is the limestone breeze, and the maximum particle diameter of mineral aggregate is 16mm, and the mineral aggregate gradation scope of design sees Table 8:
The grading limit of table 8 mineral aggregate
3), the preparation of macrovoid bituminous concrete:
(1) choosing of raw material: the macrovoid bituminous concrete is by mineral aggregate, high-viscosity modified asphalt and fibrous, and mineral aggregate, high-viscosity modified asphalt, quality of fiber ratio are 100: 5.3: 0.6; Described fiber is selected lignin fibre for use;
(2) preparation: mineral aggregate, high-viscosity modified asphalt and fiber are mixed stirring, and temperature is 185 ℃, and drop temperature is in 185 ℃, and void content scope 20～30% gets the macrovoid bituminous concrete;
4), the preparation of thermosetting resin grouting agent:
(1) choosing of raw material: the thermosetting resin grouting agent is made up of epoxy resin, curing compound, thinner and flexibilizer, and each constituent mass is than being epoxy resin: curing compound: thinner: flexibilizer=100: 100: 10: 8;
Described epoxy resin is selected bisphenol A type epoxy resin for use; Described curing compound is selected acid anhydride type curing agent (methyl inner methylidyne tetrahydric phthalic anhydride) for use; Described thinner is selected furfural one acetone for use; Described flexibilizer is selected dibutyl phthalate for use;
(2) preparation: earlier epoxy resin and curing compound are mixed, in 200 rev/mins mixer, evenly stirred 5 minutes, keep rotating speed constant then, in mixer, add thinner, flexibilizer successively, at the uniform velocity stirred 10 minutes, and can make the thermosetting resin grouting agent of viscosity 0.686Pa.s;
Three), mating formation of bridge deck pavement:
1) the macrovoid bituminous concrete that on the steel box girder bridge face steel plate, paves, pavement thickness is 4cm, and carries out final pressure, macrovoid bituminous concrete casing play;
2) finish the rolling of macrovoid bituminous concrete casing play after, encapsulation process is carried out in macrovoid bituminous concrete casing play side, when taking advantage of asphalt concrete layer and also being in hot state, thermosetting resin grouting agent (under the normal pressure) is poured on the macrovoid bituminous concrete casing play, push till the space of macrovoid bituminous concrete casing play is filled up with vulcanite scraper, obtain the resin filling type asphalt concrete lower floor of mating formation;
3) maintenance is after 3 days, sprays one deck sticking layer oil in the resin filling type asphalt concrete lower floor of mating formation, and the pitch wearing coat that paves, and pitch wearing coat thickness is 4cm; The pitch wearing coat adopts the OGFC-13 bituminous mixture of high-viscosity modified asphalt preparation.
On steel box girder bridge face, adopt above method to mat formation, the experimental test performance is prepared as in the usable material chamber: Marshall stability is 32kN, dynamic stability is 19800 times/mm, adhesion strength between bridge deck pavement (bituminous mixture) and steel plate reaches 3.2Mpa, and the steel plate assembly can stand fatigue test 2,500,000 times.
Embodiment 4:
A kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method, it comprises the steps:
One) at first the steel box girder bridge face steel plate being carried out derusting by sandblasting handles;
Two) preparation of material:
1), the preparation of high-viscosity modified asphalt:
(1) choosing of raw material: high-viscosity modified asphalt is made up of styrene butadiene styrene block copolymer (SBS) (SBS), activating rubber powder, compatible resin, antioxidant and matrix pitch; The mass ratio of matrix pitch, styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant is 100: 14.5: 7.6: 6.7: 0.5; Wherein, compatible resin is selected Petropols for use, and antioxidant is selected zinc for use, and matrix pitch is selected the AH-90 heavy traffic asphaltum for use;
(2) concrete preparation process is: will mix styrene butadiene styrene block copolymer (SBS) and compatible resin after the matrix pitch fusing, under 185 ℃ of temperature, stirred 20 minutes, adopted emulsify at a high speed cutter high speed shear then 50 minutes, 6000 rev/mins of rotating speeds, left standstill 20 minutes at 160 ℃ then, make its abundant swelling, add activating rubber powder and antioxidant, high speed shear is 35 minutes again, promptly makes 60 ℃ of viscosity 〉=80000Pa.s high-viscosity modified asphalt;
2), mineral aggregate gradation:
Mineral aggregate is by gathering materials and filler is formed, and the mass ratio that gathers materials with filler is 100: 6.4, gathers materials and selects diabase for use, and filler is the limestone breeze, and the maximum particle diameter of mineral aggregate is 16mm, and the mineral aggregate gradation scope of design sees Table 9:
The grading limit of table 9 mineral aggregate
3), the preparation of macrovoid bituminous concrete:
(1) choosing of raw material: the macrovoid bituminous concrete is by mineral aggregate, high-viscosity modified asphalt and fibrous, and mineral aggregate, high-viscosity modified asphalt, quality of fiber ratio are 100: 5.3: 0.6; Described fiber is selected mineral fibers for use;
(2) preparation: mineral aggregate, high-viscosity modified asphalt and fiber are mixed stirring, and temperature is 185 ℃, and drop temperature is in 185 ℃, and void content scope 20～30% gets the macrovoid bituminous concrete;
4), the preparation of thermosetting resin grouting agent:
(1) choosing of raw material: the thermosetting resin grouting agent is made up of epoxy resin, curing compound, thinner and flexibilizer, and each constituent mass is than being epoxy resin: curing compound: thinner: flexibilizer=100: 110: 15: 1;
Described epoxy resin is selected bisphenol A type epoxy resin for use; Described curing compound is selected amine curing agent (m-xylene diamine) for use; Described thinner is selected ethanol for use; Described flexibilizer is selected dibutyl phthalate for use;
(2) preparation: earlier epoxy resin and curing compound are mixed, in 200 rev/mins mixer, evenly stirred 5 minutes, keep rotating speed constant then, in mixer, add thinner, flexibilizer successively, at the uniform velocity stirred 10 minutes, and can make the thermosetting resin grouting agent of viscosity 0.552Pa.s;
Three), mating formation of bridge deck pavement:
1) the macrovoid bituminous concrete that on the steel box girder bridge face steel plate, paves, pavement thickness is 4cm, and carries out final pressure, macrovoid bituminous concrete casing play;
2) finish the rolling of macrovoid bituminous concrete casing play after, encapsulation process is carried out in macrovoid bituminous concrete casing play side, when taking advantage of asphalt concrete layer and also being in hot state, thermosetting resin grouting agent (at normal temperatures and pressures) is poured on the macrovoid bituminous concrete casing play, obtains the resin filling type asphalt concrete lower floor of mating formation;
3) maintenance is after 3 days, sprays one deck sticking layer oil in the resin filling type asphalt concrete lower floor of mating formation, and the pitch wearing coat that paves, and pitch wearing coat thickness is 4cm; The pitch wearing coat adopts the SMA-13 bituminous mixture of high-viscosity modified asphalt preparation.
On steel box girder bridge face, adopt above method to mat formation, the experimental test performance is prepared as in the usable material chamber: Marshall stability is 28kN, dynamic stability is 15800 times/mm, adhesion strength between bridge deck pavement (bituminous mixture) and steel plate reaches 2.6Mpa, and the steel plate assembly can stand fatigue test 2,000,000 times.
Claims (3)
1. a resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method is characterized in that it comprises the steps:
One) at first the steel box girder bridge face steel plate being carried out derusting by sandblasting handles;
Two) preparation of material:
1), the preparation of high-viscosity modified asphalt:
(1) choosing of raw material: high-viscosity modified asphalt is made up of styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant and matrix pitch; The mass ratio of matrix pitch, styrene butadiene styrene block copolymer (SBS), activating rubber powder, compatible resin, antioxidant is 100: 7.4～14.5: 2.2～7.6: 2.4～6.7: 0.2～0.5; Wherein, compatible resin is selected rosin glycerol resin, terpene resin or Petropols for use, and antioxidant is selected lead, zinc, carbon black, calcium salt or amine for use, and matrix pitch is selected AH-70 heavy traffic asphaltum or AH-90 heavy traffic asphaltum for use;
(2) concrete preparation process is: will mix styrene butadiene styrene block copolymer (SBS) and compatible resin after the matrix pitch fusing, under 165～185 ℃ of temperature, stirred 15～20 minutes, adopted emulsify at a high speed cutter high speed shear then 30～50 minutes, rotating speed 4000-6000 rev/min, left standstill 15～20 minutes at 140～160 ℃ then, make its abundant swelling, add activating rubber powder and antioxidant, high speed shear is 15～35 minutes again, promptly makes 60 ℃ of viscosity 〉=80000Pa.s high-viscosity modified asphalt;
2), mineral aggregate gradation:
Mineral aggregate is by gathering materials and filler is formed, and the mass ratio that gathers materials with filler is 100: 2.0～6.4, gathers materials that to select basalt or diabase, filler for use be the limestone breeze, and the maximum particle diameter of mineral aggregate is 16mm, and mineral aggregate passes through the quality percentage of following sieve aperture:
The sieve aperture of 16mm: 100～100%, 13.2mm sieve aperture: 90～96%, 9.5mm sieve aperture: 65～70%, 4.75mm sieve aperture: 11～22%, the sieve aperture of 2.36mm: 10～16%, the sieve aperture of 1.18mm: 7～11%, 0.6mm sieve aperture: 5～9%, 0.3mm sieve aperture: 4～7%, the sieve aperture of 0.15mm: 4～7%, the sieve aperture of 0.075mm: 3～5%;
3), the preparation of macrovoid bituminous concrete:
(1) choosing of raw material: the macrovoid bituminous concrete is by mineral aggregate, high-viscosity modified asphalt and fibrous, and mineral aggregate, high-viscosity modified asphalt, quality of fiber ratio are 100: 3.7～5.3: 0～0.6; Described fiber is selected polymer fiber, mineral fibers or lignin fibre for use;
(2) preparation: mineral aggregate, high-viscosity modified asphalt and fiber are mixed stirring, and temperature is 170～185 ℃, and drop temperature is not less than 175 ℃, and void content scope 20～30% gets the macrovoid bituminous concrete;
4), the preparation of thermosetting resin grouting agent:
(1) choosing of raw material: the thermosetting resin grouting agent is made up of epoxy resin, curing compound, thinner and flexibilizer, and each constituent mass is than being epoxy resin: curing compound: thinner: flexibilizer=100: 90～110: 6～15: 1～10;
Described epoxy resin is selected bisphenol A type epoxy resin for use; Described curing compound is selected acid anhydride type curing agent or amine curing agent for use; Described thinner is selected acetone, dimethylbenzene, furfural-acetone or alcohol for use; Described flexibilizer is selected polyamide or dibutyl phthalate for use;
(2) preparation: earlier epoxy resin and curing compound are mixed, in 100～200 rev/mins mixer, evenly stirred 3～5 minutes, keep rotating speed constant then, in mixer, add thinner, flexibilizer successively, at the uniform velocity stirred 5～10 minutes, and can make the thermosetting resin grouting agent of viscosity≤0.8Pa.s;
Three), mating formation of bridge deck pavement:
1) the macrovoid bituminous concrete that on the steel box girder bridge face steel plate, paves, pavement thickness is 2～4cm, and carries out final pressure, macrovoid bituminous concrete casing play;
2) encapsulation process is carried out in the side of macrovoid bituminous concrete casing play, when taking advantage of macrovoid bituminous concrete casing play and also being in hot state, utilizing the thermosetting resin grouting agent that macrovoid bituminous concrete casing play is irritated fills out, push till the space of macrovoid bituminous concrete casing play is filled up with vulcanite scraper, the resin filling type asphalt concrete lower floor of mating formation;
3) maintenance is after 3 days, sprays one deck sticking layer oil in the resin filling type asphalt concrete lower floor of mating formation, and the pitch wearing coat that paves, and wearing coat thickness is 4cm.
2. a kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method according to claim 1 is characterized in that: described acid anhydride type curing agent is benzophenone tetracarboxylic dianhydride, methylhexahydrophthalic anhydride or methyl inner methylidyne tetrahydric phthalic anhydride.
3. a kind of resin filling type asphalt concrete steel box-beam bridge deck combined structure paving method according to claim 1, it is characterized in that: described amine curing agent is diethylenetriamine or m-xylene diamine.
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