Concrete bridge deck pavement structure and construction method

Abstract

The invention belongs to the technical field of road engineering, and discloses a concrete bridge deck pavement structure and a construction method.The concrete bridge deck pavement structure comprises a concrete base layer, the top of the concrete base layer is covered with a waterproof binder, and the top of the waterproof binder is covered with an asphalt concrete mixture; the top of the asphalt concrete mixture is covered with a stone mastic asphalt mixture; the waterproof binder adopts an asphalt binder or an epoxy resin binder; the paving thickness of the asphalt concrete mixture is 4.5 cm, and the paving thickness of the stone mastic asphalt mixture is 4 cm. By optimizing the thickness combination of the upper surface layer and the lower surface layer and improving a waterproof binder material and a forming process, light weight, durability and economization of bridge deck pavement are achieved, and the bridge deck pavement structure can be suitable for bridge engineering in high-temperature and rainy areas.

Description

A concrete bridge deck pavement structure and construction method Technical Field

[0001] This invention belongs to the field of road engineering technology, specifically relating to a concrete bridge deck pavement structure and construction method. Background Technology

[0002] Concrete bridge deck pavement not only directly transmits vehicle loads but also needs to resist the combined effects of temperature changes, rainwater infiltration, freeze-thaw cycles, and traffic loads. Its design and material selection directly affect the bridge deck's service life and maintenance costs. Currently, for bridge deck pavement structures in hot and rainy areas, traditional highway surface layer combination schemes are commonly used in engineering practice, such as the "4+6" structure. This involves a 4 cm thick stone mastic asphalt mixture (SMA) upper layer and a 6 cm thick asphalt mixture (AC) lower layer. While this structure has good load-bearing and anti-skid performance, it has the following drawbacks: Larger thickness and higher weight: For concrete bridge deck structures, excessive pavement thickness increases the bridge's self-weight, hindering lightweight design, especially in long-span bridges. High construction costs and long construction periods: Thicker pavement layers require more materials and energy, increasing construction costs and extending the construction period. Inadequate waterproofing adhesive design: Traditional designs often use emulsified asphalt as the adhesive, which is convenient to apply, but its high-temperature and water stability is poor, making it prone to interlayer slippage, peeling, or water damage in hot and rainy areas. The softening, aging, and water intrusion of the asphalt layer under hot and rainy conditions are not adequately considered, leading to frequent early-stage pavement defects.

[0003] Chinese patent publication number CN106638294A, entitled "A Steel Bridge Deck Pavement Structure," includes: a steel bridge deck, an epoxy zinc-rich paint anti-corrosion layer on the steel bridge deck, an epoxy asphalt adhesive waterproof layer on top of the epoxy zinc-rich paint anti-corrosion layer, an epoxy asphalt concrete pavement layer on top of the epoxy asphalt concrete pavement layer, an epoxy asphalt waterproof adhesive on top of the epoxy asphalt concrete pavement layer, and a high-elasticity modified asphalt mastic gravel layer on top of the epoxy asphalt waterproof adhesive. This patent application does not consider material cost and weight control, as well as high-temperature conditions. Summary of the Invention

[0004] In order to overcome the problems existing in the prior art, the present invention aims to provide a concrete bridge deck pavement structure and construction method. By optimizing the combination of upper and lower layer thicknesses, improving waterproof adhesive materials and molding processes, the bridge deck pavement can be made lightweight, durable and economical, and can be applied to bridge projects in high-temperature and rainy areas.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a concrete bridge deck pavement structure, comprising: a concrete base layer, the top of which is covered with a waterproof adhesive, the top of which is covered with an asphalt concrete mixture, and the top of which is covered with a stone mastic asphalt mixture; the waterproof adhesive is an asphalt adhesive or an epoxy resin adhesive; the pavement thickness of the asphalt concrete mixture is 4.5 cm, and the pavement thickness of the stone mastic asphalt mixture is 4 cm.

[0006] Optionally, the asphalt binder is an emulsified asphalt binder or a heat-modified asphalt binder.

[0007] Optionally, the asphalt concrete mixture has an asphalt-aggregate ratio of 4.8%; the aggregate mastic asphalt mixture has an asphalt-aggregate ratio of 6.0%.

[0008] Optionally, the asphalt concrete mixture is AC-13 type mixture; the aggregate mastic asphalt mixture is SMA-13 ​​type mixture.

[0009] Optionally, in the asphalt concrete mixture and the stone mastic asphalt mixture, the crushed stone is basalt and the mineral powder is limestone powder.

[0010] Secondly, the present invention provides a construction method for a concrete bridge deck pavement structure, which includes the following steps: laying a concrete base layer; spraying a waterproof adhesive on top of the concrete base layer; laying an asphalt concrete mixture on top of the sprayed waterproof adhesive, and laying a stone mastic asphalt mixture on top of the asphalt concrete mixture; and compacting the stone mastic asphalt mixture on top of the asphalt concrete mixture, with the number of compaction times being 50.

[0011] Optionally, when spraying the waterproof adhesive, the waterproof adhesive is sprayed evenly on the top of the concrete substrate.

[0012] Optionally, the amount of the waterproof adhesive sprayed is 0.8 kg / m².

[0013] Alternatively, the asphalt concrete mixture may be paved when the waterproof adhesive has cooled to room temperature.

[0014] Optionally, the entire pavement structure can be heated to 140 to 150 degrees Celsius before compaction.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The concrete bridge deck pavement structure and construction method of the present invention adopts the "4+4.5 cm" combination to replace the traditional "4+6 cm" design, which reduces the overall thickness by about 15%, significantly reduces the self-weight of the bridge, reduces the structural burden, and saves material usage.

[0016] By optimizing the thickness of the first-stage molding and the continuous compaction process, the asphalt mixture is heated more evenly and the interlayer compaction is enhanced. Field test results show that the increased compaction degree and better density uniformity effectively reduce porosity and the risk of water seepage, significantly extending service life.

[0017] After comparative optimization, the interlayer shear strength of the waterproof adhesive materials, including epoxy resin and heat-modified asphalt, is increased by 20-40% compared with traditional emulsified asphalt, effectively preventing high-temperature interlayer slippage and rainwater stripping.

[0018] While maintaining structural performance, material costs are reduced by approximately 10-15%, and paving life is extended by more than 20%, demonstrating significant value for engineering promotion. Attached Figure Description

[0019] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely schematic to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. In the drawings: Figure 1 is a three-dimensional structural schematic diagram of an embodiment of the invention; wherein, 1, concrete base layer; 2, asphalt concrete mixture; 3, stone mastic asphalt mixture. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0021] Therefore, the following detailed description of embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0022] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] When an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments. The use of the term "horizontal" does not imply that the component is required to be absolutely horizontal, but rather that it may be slightly tilted. "Horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0024] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] The present invention will now be described in detail with reference to the accompanying drawings.

[0027] The present invention discloses a concrete bridge deck pavement structure, comprising: a concrete base layer 1, the top of which is covered with a waterproof adhesive, the top of which is covered with an asphalt concrete mixture 2, and the top of which is covered with a stone mastic asphalt mixture 3; the waterproof adhesive is an asphalt adhesive or an epoxy resin adhesive; the pavement thickness of the asphalt concrete mixture 2 is 4.5 cm, and the pavement thickness of the stone mastic asphalt mixture 3 is 4 cm.

[0028] A construction method for a concrete bridge deck pavement structure, using the aforementioned concrete bridge deck pavement structure, includes the following steps: laying a concrete base layer 1; spraying a waterproof adhesive on top of the concrete base layer 1; laying an asphalt concrete mixture 2 on top of the sprayed waterproof adhesive, and laying a stone mastic asphalt mixture 3 on top of the asphalt concrete mixture 2; and compacting the stone mastic asphalt mixture 3 on top of the stone mastic asphalt mixture 3, with 50 compaction cycles.

[0029] Example 1: A concrete bridge deck pavement structure of this example is as follows: the bridge deck base is a concrete base 1, which is made of silicate cement concrete slab, and the surface is roughened, cleaned and dried.

[0030] The waterproof adhesive uses fast-degrading emulsified asphalt, and the spraying rate meets the specification requirement of 0.8 kg / m².

[0031] The lower layer is asphalt concrete mixture 2. Specifically, asphalt concrete mixture 2 adopts AC-13 type asphalt concrete mixture with a thickness of 4.5 cm and a designed asphalt-aggregate ratio of 4.8%.

[0032] The upper layer is stone mastic asphalt mixture 3. Specifically, stone mastic asphalt mixture 3 adopts SMA-13 ​​type mastic asphalt mixture, with a thickness of 4.0 cm and a designed asphalt-aggregate ratio of 6.0%.

[0033] In the asphalt concrete mixture 2 and the stone mastic asphalt mixture 3, the crushed stone is basalt and the mineral powder is limestone powder.

[0034] Construction and molding steps: After roughening the concrete base layer 1, high-pressure water cleaning and drying are carried out.

[0035] Apply the waterproof adhesive evenly at a rate of 0.8 kg / m².

[0036] When the temperature of the waterproof adhesive drops to room temperature, pave a 4.5 cm thick layer of asphalt concrete mixture 2.

[0037] On top of the asphalt concrete mixture 2, pave the stone mastic asphalt mixture 3.

[0038] Rotary compactors were used to simulate on-site compaction, with two sets of rotations: 50 and 75. Before compaction, the entire pavement structure was heated to 140 to 150 degrees Celsius using a heating device.

[0039] The molded specimen of this embodiment measures 300×300×85mm in size and has a total thickness of 8.5cm.

[0040] The specimens were subjected to interlaminar pull-out and direct shear tests at 20, 30, 40, and 50°C, respectively. The porosity was determined according to standard methods.

[0041] Comparative example of Example 1: "4+6" traditional concrete bridge deck paving using emulsified asphalt waterproof adhesive.

[0042] The bridge deck base is concrete base 1, which is made of silicate cement concrete slab, and the surface is roughened, cleaned and dried.

[0043] Waterproof adhesive: Fast-degrading emulsified asphalt is used, and the spraying amount meets the specification requirement of 0.8 kg / m².

[0044] The lower layer is asphalt concrete mixture 2. Specifically, asphalt concrete mixture 2 adopts AC-13 type asphalt concrete mixture with a thickness of 6 cm and a designed asphalt-aggregate ratio of 4.8%.

[0045] The upper layer is stone mastic asphalt mixture 3. Specifically, stone mastic asphalt mixture 3 adopts SMA-13 ​​type mastic asphalt mixture, with a thickness of 4 cm and a designed asphalt-aggregate ratio of 6.0%.

[0046] In the asphalt concrete mixture 2 and the stone mastic asphalt mixture 3, the crushed stone is basalt and the mineral powder is limestone powder.

[0047] Construction and molding steps: After roughening the concrete base layer 1, high-pressure water cleaning and drying are carried out.

[0048] Apply the waterproof adhesive evenly at a rate of 0.8 kg / m².

[0049] When the temperature of the waterproof adhesive drops to room temperature, pave a 4.5 cm thick layer of asphalt concrete mixture 2.

[0050] On top of the asphalt concrete mixture 2, pave the stone mastic asphalt mixture 3.

[0051] Rotary compactors were used to simulate on-site compaction, with two sets of rotations: 50 and 75. Before compaction, the entire pavement structure was heated to 140 to 150 degrees Celsius using a heating device.

[0052] The specimen size after molding in this embodiment is 300×300×100mm, and the total thickness is 10.0cm.

[0053] The specimens were subjected to interlaminar pull-out and direct shear tests at 20, 30, 40, and 50°C, respectively. The porosity was determined according to standard methods.

[0054] Example 2 In this example, the bridge deck base is a concrete base 1, which is made of silicate cement concrete board, and the surface is roughened, cleaned and dried.

[0055] The waterproof adhesive uses heat-modified asphalt, and the spraying amount meets the specification requirement of 0.8 kg / m².

[0056] The lower layer of asphalt concrete mixture 2, specifically, uses AC-13 type asphalt concrete mixture with a thickness of 4.5 cm and a designed asphalt-aggregate ratio of 4.8%.

[0057] The upper layer is stone mastic asphalt mixture 3. Specifically, stone mastic asphalt mixture 3 adopts SMA-13 ​​type mastic asphalt mixture, with a thickness of 4.0 cm and a designed asphalt-aggregate ratio of 6.0%.

[0058] In the asphalt concrete mixture 2 and the stone mastic asphalt mixture 3, the crushed stone is basalt and the mineral powder is limestone powder.

[0059] Construction and molding steps: After roughening the concrete base layer 1, high-pressure water cleaning and drying are carried out.

[0060] Apply the hot-modified asphalt binder evenly at a rate of 0.8 kg / m².

[0061] When the temperature of the waterproof adhesive drops to room temperature, lay two 4.5 cm thick layers of asphalt concrete mixture.

[0062] On top of the asphalt concrete mixture 2, pave the stone mastic asphalt mixture 3.

[0063] Rotary compactors were used to simulate on-site compaction, with two sets of rotations: 50 and 75. Before compaction, the entire pavement structure was heated to 140 to 150 degrees Celsius using a heating device.

[0064] The molded specimen of this embodiment measures 300×300×85mm in size and has a total thickness of 8.5cm.

[0065] The specimens were subjected to interlaminar pull-out and direct shear tests at 20, 30, 40, and 50°C, respectively. The porosity was determined according to standard methods.

[0066] The comparative example of this embodiment 2: The base layer of the "4+6" traditional concrete bridge deck pavement using hot modified asphalt waterproof adhesive is concrete base layer 1. Concrete base layer 1 is made of silicate cement concrete board, and the surface is roughened, cleaned and dried.

[0067] Waterproof adhesive: Hot modified asphalt is used, and the spraying amount meets the specification requirement of 0.8 kg / m².

[0068] The lower layer of asphalt concrete mixture 2, specifically, uses AC-13 type asphalt concrete mixture with a thickness of 6 cm and a designed asphalt-aggregate ratio of 4.8%.

[0069] The upper layer is stone mastic asphalt mixture 3. Specifically, stone mastic asphalt mixture 3 adopts SMA-13 ​​type mastic asphalt mixture, with a thickness of 4 cm and a designed asphalt-aggregate ratio of 6.0%.

[0070] In the asphalt concrete mixture 2 and the stone mastic asphalt mixture 3, the crushed stone is basalt and the mineral powder is limestone powder.

[0071] Construction and molding steps: After roughening the concrete base layer 1, high-pressure water cleaning and drying are carried out.

[0072] Apply the hot-modified asphalt binder evenly at a rate of 0.8 kg / m².

[0073] When the temperature of the waterproof adhesive drops to room temperature, lay two 4.5 cm thick layers of asphalt concrete mixture.

[0074] On top of the asphalt concrete mixture 2, pave the stone mastic asphalt mixture 3.

[0075] Rotary compactors were used to simulate on-site compaction, with two sets of rotations: 50 and 75. Before compaction, the entire pavement structure was heated to 140 to 150 degrees Celsius using a heating device.

[0076] The molded specimen of this embodiment measures 300×300×100 mm and has a total thickness of 10 cm.

[0077] The specimens were subjected to interlaminar pull-out and direct shear tests at 20, 30, 40, and 50°C, respectively. The porosity was determined according to standard methods.

[0078] Example 3 In this example, the bridge deck base is a concrete base 1, which is a silicate cement concrete slab with a surface roughened, cleaned and dried.

[0079] The waterproof adhesive is a two-component epoxy resin adhesive, with bisphenol A type epoxy resin as the main component and amine as the curing agent. The spraying amount meets the specification requirements and is set at 0.8 kg / m².

[0080] The lower layer of asphalt concrete mixture 2, specifically, uses AC-13 type asphalt concrete mixture with a thickness of 4.5 cm and a designed asphalt-aggregate ratio of 4.8%.

[0081] The upper layer is stone mastic asphalt mixture 3. Specifically, stone mastic asphalt mixture 3 adopts SMA-13 ​​type mastic asphalt mixture, with a thickness of 4.0 cm and a designed asphalt-aggregate ratio of 6.0%.

[0082] In the asphalt concrete mixture 2 and the stone mastic asphalt mixture 3, the crushed stone is basalt and the mineral powder is limestone powder.

[0083] Construction and molding steps: After roughening the concrete base layer 1, high-pressure water cleaning and drying are carried out.

[0084] Apply epoxy resin adhesive evenly at a rate of 0.8 kg / m².

[0085] When the temperature of the waterproof adhesive drops to room temperature, lay two 4.5 cm thick layers of asphalt concrete mixture.

[0086] On top of the asphalt concrete mixture 2, pave the stone mastic asphalt mixture 3.

[0087] Rotary compactors were used to simulate on-site compaction, with two sets of rotations: 50 and 75. Before compaction, the entire pavement structure was heated to 140 to 150 degrees Celsius using a heating device.

[0088] The molded specimen of this embodiment measures 300×300×85mm in size and has a total thickness of 8.5cm.

[0089] The specimens were subjected to interlaminar pull-out and direct shear tests at 20, 30, 40, and 50°C, respectively. The porosity was determined according to standard methods.

[0090] Comparative Example 3 of this Embodiment 3: The "4+6" traditional concrete bridge deck pavement using epoxy resin waterproof adhesive is a concrete base layer 1. The concrete base layer 1 is made of silicate cement concrete board, and the surface is roughened, cleaned and dried.

[0091] The waterproof adhesive is a two-component epoxy resin adhesive, with bisphenol A type epoxy resin as the main component and amine as the curing agent. The spraying amount meets the specification requirements and is set at 0.8 kg / m².

[0092] The lower layer of asphalt concrete mixture 2, specifically, uses AC-13 type asphalt concrete mixture with a thickness of 6 cm and a designed asphalt-aggregate ratio of 4.8%.

[0093] The upper layer is stone mastic asphalt mixture 3. Specifically, stone mastic asphalt mixture 3 adopts SMA-13 ​​type mastic asphalt mixture, with a thickness of 4 cm and a designed asphalt-aggregate ratio of 6.0%.

[0094] In the asphalt concrete mixture 2 and the stone mastic asphalt mixture 3, the crushed stone is basalt and the mineral powder is limestone powder.

[0095] Construction and molding steps: After roughening the concrete base layer 1, high-pressure water cleaning and drying are carried out.

[0096] Apply epoxy resin adhesive evenly at a rate of 0.8 kg / m².

[0097] When the temperature of the waterproof adhesive drops to room temperature, lay two 6 cm thick layers of asphalt concrete mixture.

[0098] On top of the asphalt concrete mixture 2, pave the stone mastic asphalt mixture 3.

[0099] Rotary compactors were used to simulate on-site compaction, with two sets of rotations: 50 and 75. Before compaction, the entire pavement structure was heated to 140 to 150 degrees Celsius using a heating device.

[0100] The molded specimen of this embodiment measures 300×300×100 mm and has a total thickness of 10 cm.

[0101] The specimens were subjected to interlaminar pull-out and direct shear tests at 20, 30, 40, and 50°C, respectively. The porosity was determined according to standard methods.

[0102] Test Results: The above Examples 1, 2, 3 and their respective comparative examples were subjected to performance tests according to the specifications. The specific test results are as follows: Raw material performance test results are as follows: Modified asphalt test results are shown in Table 1, coarse aggregate test results are shown in Table 2, fine aggregate test results are shown in Table 3, mineral powder test results are shown in Table 4, lignin fiber test results are shown in Table 5, gradation design is shown in Table 6, pull-out strength test results (MPa) are shown in Table 7, and direct shear strength test results (MPa) are shown in Table 8.

[0103] Table 1

[0104] Table 2

[0105] Table 3

[0106] Table 4

[0107] Table 5

[0108] Table 6

[0109] Table 7

[0110] Table 8

[0111] Raw material testing showed that the SBS modified asphalt, coarse / fine aggregates, and mineral powder samples met the specifications. Among them, the SBS modified asphalt exhibited excellent softening point (89.5℃) and elastic recovery (94.7%), ensuring the pavement layer's resistance to high-temperature deformation.

[0112] Pull-out and direct shear tests were conducted on Examples 1-3 and Comparative Examples 1-3 at four temperature conditions: 20, 30, 40, and 50°C. The interlayer pull-out strength of the different bonding materials was in the following order: epoxy resin > heat-modified asphalt > emulsified asphalt. Epoxy resin exhibited excellent interfacial bonding performance and high structural stability.

[0113] Furthermore, the porosity of Examples 1-3 and Comparative Examples 1-3 was tested. A smaller total specimen thickness facilitates compaction. At 50 rotations, the high-temperature performance of the "4+4.5" structure combination was superior to the "4+6" structure. After 75 rotations, the high-temperature performance of the "4+4.5" and "4+6" structures was comparable, corresponding to a porosity of 4.2% for the "4+4.5" structure.

[0114] Therefore, based on the above analysis, the present invention demonstrates the highest interlaminar pull-out and direct shear strength with the least attenuation in the 20–50 ℃ range of epoxy resin, exhibiting the most stable performance; thermally modified asphalt is second best; and emulsified asphalt shows a significant decrease in strength at high temperatures (50 ℃).

[0115] The high bonding strength of epoxy resin minimizes the risk of high-temperature rutting and interlayer slippage during 50 compression tests, demonstrating excellent performance.

[0116] Under the same number of rotational compaction cycles (50 cycles), the porosity of all "4+4.5" specimens was 4.2%, while that of the corresponding "4+6" specimens was 4.6%–5.0%. This indicates that a smaller total thickness makes it easier to achieve higher density (lower porosity) within a limited number of compaction cycles, thereby improving early high-temperature performance and impermeability. When the number of rotations increased to 75 cycles, the porosity of the two structures tended to be consistent (3.8%–4.0%), at which point the difference in high-temperature performance decreased or became essentially equivalent.

[0117] This invention enables the "4+4.5" structure to achieve lightweighting, material savings of 10%–15%, and improved construction efficiency (by reducing the number of compaction cycles to save energy) by reducing the total thickness, while ensuring interlayer bonding and meeting compaction process requirements. Furthermore, it outperforms the traditional "4+6" structure under common construction compaction energy (50 times). By using epoxy or heat-modified adhesives, high-temperature durability and interlayer bonding can be further enhanced.

[0118] Unless otherwise specified, the equipment components involved in the above embodiments are all conventional equipment components, and the structural settings, working methods or control methods involved are all conventional settings, working methods or control methods in the art unless otherwise specified.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention, as long as they do not depart from the spirit and scope of the technical solutions of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A concrete bridge deck pavement structure, characterized in that, include: A concrete base layer (1) is covered with a waterproof adhesive, an asphalt concrete mixture (2) is covered with an asphalt concrete mixture (2), and a stone mastic asphalt mixture (3) is covered with an asphalt adhesive. The waterproof adhesive is an asphalt adhesive or an epoxy resin adhesive. The paving thickness of the asphalt concrete mixture (2) is 4.5 cm, and the paving thickness of the stone mastic asphalt mixture (3) is 4 cm.

2. The concrete bridge deck pavement structure according to claim 1, characterized in that, The asphalt binder is an emulsified asphalt binder or a heat-modified asphalt binder.

3. The concrete bridge deck pavement structure according to claim 1, characterized in that, The asphalt concrete mixture (2) has an asphalt-aggregate ratio of 4.8%; the asphalt-aggregate mixture (3) has an asphalt-aggregate ratio of 6.0%.

4. The concrete bridge deck pavement structure according to claim 1, characterized in that, The asphalt concrete mixture (2) adopts AC-13 type mixture; the stone mastic asphalt mixture (3) adopts SMA-13 ​​type mixture.

5. A concrete bridge deck pavement structure according to claim 1, characterized in that, In the asphalt concrete mixture (2) and the stone mastic asphalt mixture (3), the crushed stone is basalt and the mineral powder is limestone powder.

6. A construction method for a concrete bridge deck pavement structure, characterized in that, A concrete bridge deck pavement structure according to any one of claims 1 to 5 includes the following steps: laying a concrete base layer (1); spraying a waterproof adhesive on the top of the concrete base layer (1); laying an asphalt concrete mixture (2) on the top of the sprayed waterproof adhesive, and laying a stone mastic asphalt mixture (3) on the top of the asphalt concrete mixture (2); and compacting the top of the stone mastic asphalt mixture (3) 50 times.

7. The construction method for a concrete bridge deck pavement structure according to claim 6, characterized in that, When spraying the waterproof adhesive, spray it evenly on the top of the concrete base layer (1).

8. The construction method for a concrete bridge deck pavement structure according to claim 7, characterized in that, The spraying rate of the waterproof adhesive is 0.8 kg / m².

9. A construction method for a concrete bridge deck pavement structure according to claim 6, characterized in that, When the waterproof adhesive has cooled to room temperature, the asphalt concrete mixture is laid (2).

10. A construction method for a concrete bridge deck pavement structure according to claim 6, characterized in that, Before compaction, the entire paving structure is heated to 140 to 150 degrees Celsius.

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