CN114277677B - Rigid-flexible composite steel bridge deck pavement structure and pavement method thereof - Google Patents
Rigid-flexible composite steel bridge deck pavement structure and pavement method thereof Download PDFInfo
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- CN114277677B CN114277677B CN202111671935.9A CN202111671935A CN114277677B CN 114277677 B CN114277677 B CN 114277677B CN 202111671935 A CN202111671935 A CN 202111671935A CN 114277677 B CN114277677 B CN 114277677B
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- 239000010959 steel Substances 0.000 title claims abstract description 43
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 63
- 239000011347 resin Substances 0.000 claims abstract description 63
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 47
- 239000004593 Epoxy Substances 0.000 claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 39
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 31
- 239000011707 mineral Substances 0.000 claims description 31
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- 239000010426 asphalt Substances 0.000 claims description 24
- 239000003822 epoxy resin Substances 0.000 claims description 22
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- 238000000576 coating method Methods 0.000 claims description 18
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- 239000011701 zinc Substances 0.000 claims description 8
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- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 6
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Road Paving Structures (AREA)
Abstract
The invention relates to the field of steel bridge deck pavement engineering, in particular to a novel rigid-flexible composite steel bridge deck pavement structure and a pavement method thereof. The technical key points are as follows: comprises a second-order epoxy waterproof bonding layer, a GA10 pouring asphalt concrete layer, a normal-temperature resin bonding layer and an RSMA10 normal-temperature curing resin concrete layer which are sequentially paved on a steel bridge deck. In the steel bridge deck pavement structure, the lower GA10 cast asphalt concrete has good deformation tracking property, ensures effective bonding with the steel plate and improves the pavement integrity; the upper RSMA10 normal-temperature curing resin concrete has excellent high-temperature stability, and can ensure that rutting does not occur at high temperature in summer; secondly, RSMA10 has larger construction depth, so that the skid resistance of the pavement structure is superior to that of the traditional EA10 hot-mix epoxy asphalt concrete; meanwhile, the RSMA10 normal-temperature cured resin concrete has low requirements on construction temperature, and the normal-temperature construction is smoke-free and environment-friendly.
Description
Technical Field
The invention relates to the technical field of steel bridge deck pavement, in particular to a novel rigid-flexible composite steel bridge deck pavement structure and a pavement method thereof.
Background
The steel bridge deck pavement is a research hot spot in the field of roads and bridges, and is used as a structure for directly bearing the load of a vehicle, so that the steel bridge deck pavement has the function of driving the vehicle, and the main structure of the steel bridge deck can be effectively protected from abrasion and rain water erosion.
The traditional pouring type and modified asphalt SMA pavement structure has the problem of insufficient high-temperature performance, and rutting is very easy to generate under the coupling action of high temperature and vehicle load in summer. Although the hot-mix epoxy pavement has better high-temperature stability, the problem of exposed steel plates at the bottom of the pavement is caused by insufficient anti-skid performance and easy formation of penetrating cracks.
In view of the defects existing in the conventional steel bridge deck pavement, the inventor researches and innovates based on years of rich experience and professional knowledge of the materials and is matched with theoretical analysis, a novel rigid-flexible composite steel bridge deck pavement structure and a pavement method thereof are developed, and the anti-skid performance and the service life of pavement are improved through reasonable structural design and material innovation.
Disclosure of Invention
The first aim of the invention is to provide a novel rigid-flexible composite steel bridge deck pavement structure, wherein a casting asphalt mixture is used as a lower surface layer, so that good deformation tracking property and crack resistance are obtained; the normal temperature solidified resin SMA is used as the upper layer to obtain good high temperature stability and anti-skid performance.
The technical aim of the invention is realized by the following technical scheme:
the invention provides a novel rigid-flexible composite steel bridge deck pavement structure, wherein a second-order epoxy waterproof adhesive layer is sequentially paved on the surface of a steel panel from bottom to top, a GA10 cast asphalt concrete lower layer, a normal-temperature resin adhesive layer and a RSMA10 normal-temperature cured resin concrete upper layer;
the RSMA10 normal-temperature curing resin concrete upper layer comprises the following components in parts by weight:
7-10 parts of normal-temperature curing resin cementing material, 90-93 parts of mineral aggregate and 0.3-0.6 part of fiber; the mineral aggregate comprises aggregates with different particle sizes and mineral powder.
According to the invention, the flexible GA10 cast asphalt concrete is adopted as the lower surface layer, and the rigid RSMA10 normal-temperature cured resin concrete upper surface layer is matched, so that not only is good deformation tracking property of pavement ensured, but also no rutting of pavement at high temperature in summer is ensured through the excellent high-temperature stability of the RSMA10 normal-temperature cured resin concrete upper surface layer.
The RSMA10 has larger construction depth, and excellent anti-skid performance is obtained through the combination of the epoxy mixture and SMA grading.
Further, the GA10 cast asphalt concrete lower layer comprises the following components in parts by weight: 10-20 parts of casting asphalt cement, 80-90 parts of mineral aggregate and 0.3-1 part of external admixture; the mineral aggregate comprises aggregates with different particle sizes and mineral powder.
Further, the gradation of the normal temperature cured resin concrete is SMA gradation.
Further, the mineral powder is limestone mineral powder.
Further, the aggregate comprises coarse aggregate and fine aggregate, and is formed by crushing basalt.
Further, the casting asphalt cement consists of straight run type 30# asphalt and TLA lake asphalt according to the mass ratio of (7:3) - (6:4).
Further, the external admixture is a composite synergistic warm mix agent, and comprises the following specific components in parts by weight: 6-12 parts of oleyl alcohol, 1-6 parts of acrylamide or epoxide thereof, 0.1-1 part of petroleum resin and 0.1-2 parts of epoxy stearoyl acrylate.
Further, basalt crushed stone is spread on the lower surface layer of the GA10 pouring asphalt concrete, the particle size of the crushed stone is 13-20 mm, and the spreading amount is 10-12 kg/m 2.
Further, the normal temperature curing resin cementing material consists of a component A and a component B, wherein the mass ratio of the component A to the component B is (4.5-5) 1.
Further, the component A comprises the following components in parts by weight: 100 parts of bisphenol A type glycidyl ether epoxy resin and 10-15 parts of inactive epoxy resin diluent; the component B comprises: 80-90 parts of curing agent and 1-2 parts of defoaming agent.
Further, the curing agent is one or a combination of more than one of anhydride compound, ester and amide.
Further, the curing agent is 75-85 parts of methyl tetrahydrophthalic anhydride, 3-5 parts of 2-ethyl-4-methylimidazole and 2-5 parts of phenylsulfonamide according to parts by weight.
The invention provides a novel normal-temperature curing agent, wherein 2-ethyl-4-methylimidazole is taken as an accelerator, and phenylsulfonamide has amide groups and contains phenylsulfo groups, so that the bonding strength between a normal-temperature resin bonding layer and an RSMA10 normal-temperature curing resin concrete upper layer is greatly improved, stripping after stress between a flexible lower layer and a rigid upper layer is avoided, and the interlayer stripping resistance is improved.
Further, the fibers are wood fibers.
The second object of the invention is to provide a paving method of a novel rigid-flexible composite steel bridge deck paving structure, which has the same technical effects.
The technical aim of the invention is realized by the following technical scheme:
The paving method of the novel rigid-flexible composite steel bridge deck paving structure specifically comprises the following operation steps:
s1, carrying out sand blasting rust removal treatment on a steel plate, and spraying epoxy zinc-rich anti-corrosion primer;
S2, cleaning the surface of the epoxy zinc-rich layer, and coating a second-order epoxy resin waterproof bonding layer;
S3, preparing GA10 cast asphalt concrete, and paving by using an asphalt paver;
s4, wrapping broken stone by adopting a second-order epoxy resin binder; uniformly spreading the pre-wrapped broken stone on the surface of GA10 cast asphalt concrete to naturally sink the broken stone;
S5, coating a normal-temperature resin binder on the surface of the GA10 cast asphalt concrete after the GA10 cast asphalt concrete is cooled and hardened;
S6, preparing RSMA10 normal-temperature cured resin asphalt concrete, paving the RSMA10 normal-temperature cured resin asphalt concrete on the surface of the GA10 casting asphalt concrete layer coated with the normal-temperature resin binder, and sealing and preserving for 3-5 days at normal temperature after rolling is finished, so that traffic can be opened.
Further, in the step S1, the steel plate is subjected to sand blasting and rust removal treatment, the cleanliness of Sa2.5 grade or more is required, and the roughness is more than 60 mu m.
Further, the coating weight of the second-order epoxy resin waterproof adhesive layer in the step S2 is 0.4-0.6 kg/m 2.
Further, in step S3, an asphalt spreader is used for spreading, and manual control of spreading thickness and flatness is assisted.
Further, after the pre-stirring in the step S4 is finished, the crushed stones are naturally cooled, and the dispersion and non-adhesion of each crushed stone are ensured.
In the step S4, the dosage of the second-order epoxy resin binder is 0.5-1.2%, and the particle size of the ready-mixed resin gravels is 13-20 mm.
Further, the coating amount of the normal temperature type resin binder in the step S5 is 0.5 to 0.6kg/m 2.
Further, in step S6, the normal temperature curing type resin concrete of RSMA10 is paved on the surface of the GA10 pouring type asphalt concrete layer coated with the normal temperature type resin binder by adopting a conventional asphalt mixture paving device, and the road roller with 30t rubber wheels is rolled for 4 to 6 times, and after the road roller is completed, the traffic can be opened by sealing and preserving for 3 to 5 days at normal temperature.
In summary, the invention has the following beneficial effects:
The novel rigid-flexible composite steel bridge deck pavement structure provided by the invention has the characteristics of good high-temperature performance and excellent deformation tracking performance of the traditional rigid-flexible composite steel bridge deck pavement, and meanwhile, the pavement upper layer adopts the normal-temperature curing resin mixture RSMA10 to replace the traditional hot-mix epoxy asphalt mixture EA10, so that the pavement upper layer has the advantages of convenience in construction and environment friendliness. The normal temperature solidified resin concrete of the upper layer adopts SMA grading, has larger construction depth, and solves the defect of insufficient anti-skid performance of epoxy pavement.
Detailed Description
In order to further explain the technical means and effects adopted by the invention to achieve the preset aim, the invention provides a novel rigid-flexible composite steel bridge deck pavement structure and a pavement method thereof, and specific embodiments, characteristics and effects thereof are described in detail below.
The sources of the raw materials used in the examples:
lake asphalt: trinidar lake asphalt;
30# asphalt: china petrochemical Co., ltd;
Second-order epoxy resin: jiangsu middle road traffic science and technology limited;
normal temperature resin binder: jiangsu middle road traffic science and technology limited;
composite synergistic warm mix agent: jiangsu middle road traffic science and technology limited;
Mineral aggregate in RSMA 10: Cold-mixing high-toughness resin;
Mineral powder: shanghai Tencel mineral powder technologies Co.
In the specific embodiment, the GA10 grading range of the cast asphalt concrete is shown in table 1; the gradation ranges of the mineral aggregate in the normal temperature curing resin concrete RSMA10 are shown in table 2.
TABLE 1 casting asphalt concrete GA10 grading Range
TABLE 2 Normal temperature cured resin concrete RSMA10 gradation Range
Example 1: novel rigid-flexible composite steel bridge deck pavement structure and pavement method thereof
The novel rigid-flexible combined type steel bridge deck pavement structure provided in this embodiment has laid the waterproof adhesive layer of second order epoxy from bottom to top in proper order, GA10 pouring type asphalt concrete lower floor, normal atmospheric temperature resin adhesive layer and RSMA10 normal atmospheric temperature solidification resin concrete upper floor.
The GA10 cast asphalt concrete lower layer comprises the following components in parts by weight: 12 parts of casting asphalt cement, 88 parts of mineral aggregate and 1 part of external admixture; the mineral aggregate comprises aggregates and mineral powder with different particle sizes, basalt crushed stone is spread on the lower surface layer, the particle size of the crushed stone is 13-20 mm, and the spreading amount is 12kg/m 2.
The RSMA10 normal-temperature curing type resin concrete upper layer comprises the following components in parts by weight: 10 parts of normal-temperature curing resin cementing material, 90 parts of mineral aggregate and 0.6 part of fiber; the mineral aggregate comprises aggregates with different particle sizes and mineral powder.
Wherein, novel rigid-flexible combined type steel bridge deck pavement structure adopts second order epoxy resin as waterproof tie coat, and the coating weight is 0.6kg/m 2.
Wherein, the novel rigid-flexible composite steel bridge deck pavement structure adopts a normal temperature type resin binder to bond the upper layer and the lower layer, and the coating weight is 0.55kg/m 2.
The paving method comprises the following steps:
S1, carrying out sand blasting rust removal on a steel plate, wherein the cleaning degree is required to reach more than Sa2.5, the roughness is more than 60 mu m, and an epoxy zinc-rich anti-corrosion primer is sprayed;
S2, cleaning the surface of the epoxy zinc-rich layer, and coating a second-order epoxy resin waterproof bonding layer, wherein the coating weight is 0.6kg/m 2;
s3, preparing GA10 cast asphalt concrete, paving by adopting an asphalt paver, and assisting in manually controlling paving thickness and flatness;
s4, wrapping the crushed stone by adopting a second-order epoxy resin binder, wherein the dosage of the second-order epoxy resin binder is 1.2% of the mass of the crushed stone, and the particle size of the premixed resin crushed stone is 13-20 mm; naturally cooling the crushed stones after the pre-stirring is finished, and ensuring that each crushed stone is dispersed and not bonded; uniformly spreading the pre-wrapped broken stone on the surface of GA10 cast asphalt concrete to naturally sink the broken stone.
S5, after the GA10 cast asphalt concrete is cooled and hardened, coating a normal-temperature resin binder on the surface of the GA10 cast asphalt concrete, wherein the coating weight is 0.55kg/m 2.
S6, preparing RSMA10 normal-temperature cured resin asphalt concrete, paving the RSMA10 normal-temperature cured resin asphalt concrete on the surface of the GA10 casting asphalt concrete layer coated with the normal-temperature resin binder by adopting conventional asphalt mixture paving equipment, and rolling for 5 times by adopting a 30t rubber-tyred roller, and sealing and preserving for 5 days at normal temperature to open traffic after completion.
Example 2: novel rigid-flexible composite steel bridge deck pavement structure and pavement method thereof
The novel rigid-flexible combined type steel bridge deck pavement structure provided in this embodiment has laid the waterproof adhesive layer of second order epoxy from bottom to top in proper order, GA10 pouring type asphalt concrete lower floor, normal atmospheric temperature resin adhesive layer and RSMA10 normal atmospheric temperature solidification resin concrete upper floor.
The GA10 cast asphalt concrete lower layer comprises the following components in parts by weight: 10 parts of casting asphalt cement, 90 parts of mineral aggregate and 0.4 part of external admixture; the mineral aggregate comprises aggregates with different particle sizes and mineral powder. The basalt crushed stone is spread on the lower layer, the particle size of the crushed stone is 13-20 mm, and the spreading amount is 10kg/m 2.
The RSMA10 normal-temperature curing type resin concrete upper layer comprises the following components in parts by weight: 8 parts of normal-temperature curing resin cementing material, 92 parts of mineral aggregate and 0.4 part of fiber; the mineral aggregate comprises aggregates with different particle sizes and mineral powder.
The normal-temperature curing resin cementing material consists of a component A and a component B, wherein the mass ratio of the component A to the component B is 5:1; the component A comprises the following components in parts by weight: 100 parts of bisphenol A type glycidyl ether epoxy resin and 15 parts of inactive epoxy resin diluent; the component B comprises: 90 parts of curing agent and 1 part of defoaming agent;
wherein, the curing agent consists of 85 parts of methyl tetrahydrophthalic anhydride, 5 parts of 2-ethyl-4-methylimidazole and 5 parts of phenylsulfonamide according to parts by weight.
Wherein, novel rigid-flexible combined type steel bridge deck pavement structure adopts second order epoxy resin as waterproof tie coat, and the coating weight is 0.5kg/m 2.
Wherein, the novel rigid-flexible composite steel bridge deck pavement structure adopts a normal temperature type resin binder to bond the upper layer and the lower layer, and the coating weight is 0.5kg/m 2.
The paving method comprises the following steps:
S1, carrying out sand blasting rust removal on a steel plate, wherein the cleaning degree is required to reach more than Sa2.5, the roughness is more than 60 mu m, and an epoxy zinc-rich anti-corrosion primer is sprayed;
S2, cleaning the surface of the epoxy zinc-rich layer, and coating a second-order epoxy resin waterproof bonding layer, wherein the coating weight is 0.5kg/m 2;
s3, preparing GA10 cast asphalt concrete, paving by adopting an asphalt paver, and assisting in manually controlling paving thickness and flatness;
s4, wrapping the crushed stone by adopting a second-order epoxy resin binder, wherein the dosage of the second-order epoxy resin binder is 0.8% of the mass of the crushed stone, and the particle size of the ready-mixed resin crushed stone is 13-20 mm; naturally cooling the crushed stones after the pre-stirring is finished, and ensuring that each crushed stone is dispersed and not bonded; uniformly spreading the pre-wrapped broken stone on the surface of GA10 cast asphalt concrete to naturally sink the broken stone.
S5, after the GA10 cast asphalt concrete is cooled and hardened, coating a normal-temperature resin binder on the surface of the GA10 cast asphalt concrete, wherein the coating weight is 0.5kg/m 2.
S6, preparing RSMA10 normal-temperature cured resin asphalt concrete, paving the RSMA10 normal-temperature cured resin asphalt concrete on the surface of the GA10 casting asphalt concrete layer coated with the normal-temperature resin binder by adopting conventional asphalt mixture paving equipment, and rolling for 4 times by adopting a 30t rubber-tyred roller, and sealing and curing for 3 days to open traffic at normal temperature after the completion.
Performance test: the performance of the novel rigid-flexible composite steel bridge deck pavement structure in examples 1-2 was tested according to JTG E20-2011 road engineering asphalt and asphalt mixture test procedure, and the results are shown in tables 2-5.
TABLE 3 Performance index parameters of GA10 cast asphalt concrete lower layers of examples 1-2
| Performance index | Example 1 | Example 2 |
| Bulk relative density of wool | 1.903 | 1.875 |
| Penetration/mm | 1.4 | 1.3 |
| Fluidity/s | 17 | 19 |
| Dynamic stability at 60 ℃/(times/mm) | 636 | 574 |
| Bending failure strain at-10 ℃ mu epsilon | 3577 | 3902 |
| 15 ℃,10Hz dynamic modulus/MPa | 8757 | 8805 |
TABLE 4 index parameters of the upper layers of RSMA10 Normal temperature cured resin concrete of examples 1-2
| Performance index | Example 1 | Example 2 |
| Marshall stability/KN at 70℃after curing | 56.2 | 51.8 |
| Flow value/0.1 mm | 32.5 | 36.3 |
| Dynamic stability at 60 ℃/(times/mm) | ＞20000 | ＞20000 |
| Bending failure strain at-10 ℃ mu epsilon | 8644 | 8715 |
| Residual Marshall stability in immersion% | 98.5 | 98.1 |
| Freeze thawing split strength ratio/% | 91.1 | 92.4 |
| Constructional depth/mm | 0.99 | 0.97 |
| Coefficient of friction/BPN | 69 | 68 |
Table 5 comparison of pavement structural properties
From the above table, it can be seen that:
(1) The rigid-flexible composite pavement structure provided by the invention has good high-temperature performance, and the dynamic stability at 60 ℃ is more than 20000 times/mm.
(2) The dynamic modulus of the rigid-flexible composite pavement structure provided by the invention is greater than that of a common casting asphalt mixture at 15 ℃ and 10Hz closest to the service condition of the pavement.
(3) The construction depth of the pavement upper surface layer RSMA10 is close to 1mm, and the friction coefficient is close to 70BPN, so that the rigid-flexible composite pavement provided by the invention has good anti-skid performance.
The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.
Claims (5)
1. A rigid-flexible composite steel bridge deck pavement structure is characterized in that a second-order epoxy waterproof adhesive layer is sequentially paved on the surface of a steel panel from bottom to top, a GA10 cast asphalt concrete lower layer, a normal-temperature resin adhesive layer and a RSMA10 normal-temperature cured resin concrete upper layer;
the RSMA10 normal-temperature curing resin concrete upper layer comprises the following components in parts by weight:
7-10 parts of normal-temperature curing resin cementing material, 90-93 parts of mineral aggregate and 0.3-0.6 part of fiber; the mineral aggregate comprises aggregates with different particle sizes and mineral powder;
the normal temperature curing resin cementing material consists of a component A and a component B, wherein the mass ratio of the component A to the component B is (4.5-5) 1;
The component A comprises the following components in parts by weight: 100 parts of bisphenol A type glycidyl ether epoxy resin and 10-15 parts of inactive epoxy resin diluent; the component B comprises the following components: 80-90 parts of curing agent and 1-2 parts of defoaming agent;
the curing agent is one or a combination of more of anhydride compounds, esters and amides;
According to the weight parts, the curing agent is composed of 75-85 parts of methyl tetrahydrophthalic anhydride, 3-5 parts of 2-ethyl-4-methylimidazole and 2-5 parts of phenylsulfonamide;
The GA10 cast asphalt concrete lower layer comprises the following components in parts by weight: 10-20 parts of casting asphalt cement, 80-90 parts of mineral aggregate and 0.3-1 part of external admixture; the mineral aggregate comprises aggregates with different particle sizes and mineral powder;
The external admixture is a composite synergistic warm mix agent, and comprises the following specific components in parts by weight: 6-12 parts of oleyl alcohol, 1-6 parts of acrylamide or epoxide thereof, 0.1-1 part of petroleum resin and 0.1-2 parts of epoxy stearoyl acrylate.
2. The rigid-flexible composite steel bridge deck pavement structure of claim 1, wherein the mineral aggregate is SMA graded.
3. The rigid-flexible composite steel bridge deck pavement structure according to claim 1, wherein basalt crushed stone is spread on the lower surface layer of the GA10 cast asphalt concrete, the particle size of the crushed stone is 13-20 mm, and the spreading amount is 10-12 kg/m 2.
4. The paving method of the rigid-flexible composite steel bridge deck pavement structure according to claim 1, which is characterized by comprising the following steps:
s1, carrying out sand blasting rust removal treatment on a steel plate, and spraying epoxy zinc-rich anti-corrosion primer;
S2, cleaning the surface of the epoxy zinc-rich layer, and coating a second-order epoxy resin waterproof bonding layer;
S3, preparing GA10 cast asphalt concrete, and paving by using an asphalt paver;
S4, wrapping broken stone by adopting a second-order epoxy resin binder, and uniformly spreading the pre-wrapped broken stone on the surface of GA10 cast asphalt concrete to naturally sink the GA10 cast asphalt concrete;
S5, coating a normal-temperature resin binder on the surface of the GA10 cast asphalt concrete after the GA10 cast asphalt concrete is cooled and hardened;
s6, preparing RSMA10 normal-temperature cured resin asphalt concrete, paving the RSMA10 normal-temperature cured resin asphalt concrete on the surface of the GA10 cast asphalt concrete coated with the normal-temperature resin binder, and sealing and preserving for 3-5 days at normal temperature after rolling is completed, so that traffic can be opened.
5. The paving method of the rigid-flexible composite steel bridge deck pavement structure according to claim 4, wherein in the step S4, the usage amount of the second-order epoxy resin binder is 0.5-1.2% of the mass of broken stone, and the particle size of the ready-mixed resin broken stone is 13-20 mm.
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