CN210104471U

CN210104471U - Asphalt concrete surface course of waterproof bridge floor

Info

Publication number: CN210104471U
Application number: CN201920707676.2U
Authority: CN
Inventors: 方涛; 林瑚; 柯伟金; 朱昌镯
Original assignee: Seaport Luqiao Ltd By Share Ltd
Current assignee: Seaport Luqiao Ltd By Share Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-02-21
Anticipated expiration: 2029-05-16

Abstract

The utility model discloses a bituminous concrete surface course of waterproof bridge floor, belong to highway construction technical field, its technical scheme main points are including the bridge, wherein, the bridge coats and is stamped one deck epoxy adhesive linkage, the epoxy adhesive linkage upper berth is equipped with the metalling, be equipped with the layer of mating formation of concrete on the metalling, the layer upper berth of mating formation of concrete is stamped the waterproof layer, it has the layer of mixing of pitch still to cover on the waterproof layer, the waterproof layer includes waterproof coating, tar sand adhesive linkage and flexible layer, waterproof coating sprays at concrete surface layer and formation by polymer epoxy asphalt coating, the waterproof coating membrane that forms is thick to be 1.7 ~ 2mm, the thickness of tar sand adhesive linkage is 20 ~ 25mm, the flexible layer is that the thickness is 40 ~ 50 mm's level and joins in marriage the metalling. The waterproof coating made of the high-molecular epoxy asphalt coating is sprayed on the concrete pavement layer, then the asphalt sand bonding layer and the graded gravel layer which play a role in buffering are paved, and finally the asphalt mixing layer is paved, so that the whole bridge deck has good toughness and water stability.

Description

Asphalt concrete surface course of waterproof bridge floor

Technical Field

The utility model belongs to the technical field of highway construction, refer in particular to a bituminous concrete surface course of waterproof bridge floor.

Background

The bridge deck pavement is different from the asphalt concrete pavement of a common road, and needs to have enough strength, reasonable thickness, excellent deformation coordination, excellent interlayer bonding performance, high-temperature stability, crack resistance, skid resistance, smoothness and technical performance which is adaptive to the structural characteristics and the use conditions of the bridge deck besides the requirement of the common road surface on the asphalt concrete.

At present, the phenomenon of water damage of some expressway bridge surface asphalt pavement layers is common, and the formation reason is mainly that moisture easily permeates into the inside of a pavement and reaches a concrete panel due to the unreasonable bridge surface pavement structure, so that the bridge surface pavement layer is damaged, the asphalt pavement layer is debonded from bridge deck concrete, and diseases such as steel bar corrosion and the like are easily caused on a prestressed concrete bridge panel.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bituminous concrete surface course of waterproof bridge floor through reasonable overall arrangement of mating formation for whole bridge floor has good water-proof effects, and then has prolonged the life of bridge floor.

The purpose of the utility model is realized like this: the utility model provides an asphalt concrete surface course of waterproof bridge floor, includes the bridge, wherein, the bridge coats and is stamped one deck epoxy adhesive linkage, the epoxy adhesive linkage upper berth is equipped with the metalling, be equipped with the concrete layer of mating formation on the metalling, the concrete layer of mating formation coats and is stamped the waterproof layer, it has the pitch to mix the layer still to cover on the waterproof layer, the waterproof layer includes waterproof coating, pitch sand adhesive linkage and flexible layer, waterproof coating sprays by polymer epoxy asphalt paint concrete layer surface and formation, and forms the waterproof coating membrane is thick for 1.7 ~ 2mm, the thickness of pitch sand adhesive linkage is 20 ~ 25mm, the flexible layer is graded gravel layer, and it lays thickness and is 40 ~ 50 mm.

By adopting the technical scheme, the epoxy adhesive layer is the epoxy adhesive that adopts, lay the epoxy adhesive on the bridge, play a guard action to the bridge earlier, and can also stabilize the metalling of laying above that, the concrete pavement layer is for improving the compressive strength of whole bridge floor, spray the waterproof coating that the one deck was made by polymer epoxy asphalt coating on the concrete pavement layer earlier, then lay the bituminous sand adhesive linkage and the graded metalling that play the cushioning effect again, at last lay the pitch mixture layer, the pitch mixture layer mainly is formed by mixing pitch, coarse aggregate, fine aggregate, powdered ore etc. makes whole bridge floor have good toughness and water stability.

The utility model discloses further set up to: the particle diameter of the bituminous sand adhesive layer is 3-5 mm, and the particle diameter of the flexible layer is 5-10 mm.

Through adopting above-mentioned technical scheme, the particle size of aggregate can directly influence its density, sets up the particle size of bituminous sand adhesive linkage into 3 ~ 5mm, and the particle size of flexible layer is 5 ~ 10mm, can play good cushioning effect to waterproof coating.

The utility model discloses further set up to: the asphalt mixing layer comprises an AC-20 asphalt mixing layer at the lower layer and an AC-13SBS modified asphalt mixing layer at the upper layer, the thickness of the AC-20 asphalt mixing layer is 30-40 mm, and the thickness of the AC-13SBS modified asphalt mixing layer is 30-40 mm.

By adopting the technical scheme, the SBS modified asphalt mixing layer has better high temperature resistance and low temperature resistance, the elasticity and the toughness are good, the bearing capacity of the bridge deck can be enhanced, the common asphalt mixing layer is paved below the SBS modified asphalt mixing layer, the construction cost can be saved, and the common asphalt mixing layer can play a role in extension due to different aggregate particle sizes of the two layers.

The utility model discloses further set up to: the gravel layer is formed by pressing gravel with the particle size of 3-5 mm, and the paving thickness of the gravel layer is 20-25 mm; the thickness of the concrete pavement layer is 50-60 mm.

The utility model adopts the above technical scheme beneficial effect that reaches is: 1. an epoxy bonding layer is laid on the bridge, so that the bridge can be protected; 2. the waterproof coating made of the high-molecular epoxy asphalt coating is sprayed on the concrete pavement layer, then the asphalt sand bonding layer and the graded gravel layer which play a role in buffering are paved, and finally the asphalt mixing layer is paved, so that the whole bridge deck has good toughness and water stability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

the reference numbers in the figures are: 1. a bridge; 2. an epoxy adhesive layer; 3. a crushed stone layer; 4. a concrete pavement layer; 5. a waterproof layer; 51. a water-resistant coating; 52. a tar sand adhesive layer; 53. a flexible layer; 6. an asphalt mixing layer; 61. an AC-20 asphalt mixed layer; 62. and the AC-13SBS modified asphalt mixed layer.

Detailed Description

In order to make the technical solutions in the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings:

as shown in figure 1, the asphalt concrete surface layer of the waterproof bridge floor comprises a bridge 1, wherein the bridge 1 is covered with an epoxy bonding layer 2, a gravel layer 3 is paved on the epoxy bonding layer 2, the gravel layer 3 is formed by pressing 3-5 mm-sized gravel, the paving thickness is 20-25 mm, a concrete paving layer 4 is arranged on the gravel layer 3, the thickness of the concrete paving layer 4 is 50-60 mm, a waterproof layer 5 is paved on the concrete paving layer 4, the waterproof layer 5 is also covered with an asphalt mixing layer 6, the waterproof layer 5 comprises a waterproof coating 51, an asphalt sand bonding layer 52 and a flexible layer 53, the waterproof coating 51 is formed by spraying high-molecular epoxy asphalt paint on the surface of the concrete paving layer 4, the thickness of the formed waterproof coating 51 is 1.7-2 mm, the particle diameter of the asphalt sand bonding layer 52 is 3-5 mm, and the paving thickness is 20-25 mm, the flexible layer 53 is a graded broken stone layer with the particle diameter of 5-10 mm, and the laying thickness of the flexible layer is 40-50 mm.

The epoxy adhesive layer 2 is an adopted epoxy resin adhesive, the epoxy resin adhesive is paved on the bridge 1, the bridge 1 is protected firstly, and the gravel layer 3 paved on the epoxy resin adhesive layer can be further stabilized, the concrete pavement layer 4 is used for improving the compressive strength of the whole bridge floor, a waterproof coating 51 made of high-molecular epoxy asphalt paint is sprayed on the concrete pavement layer 4 firstly, then the asphalt sand adhesive layer 52 with a buffering effect and the graded gravel layer 3 are paved, and finally the asphalt mixture layer 6 is paved, and the asphalt mixture layer 6 is mainly formed by mixing asphalt, coarse aggregate, fine aggregate, mineral powder and the like, so that the whole bridge floor has good toughness and water stability.

Further optimized, the asphalt mixing layer 6 comprises an AC-20 asphalt mixing layer 61 on the lower layer and an AC-13SBS modified asphalt mixing layer 62 on the upper layer, the thickness of the AC-20 asphalt mixing layer 61 is 30-40 mm, and the thickness of the AC-13SBS modified asphalt mixing layer 62 is 30-40 mm.

The AC-20 asphalt mixed layer 61 is an asphalt concrete layer with the maximum mixed particle size of 20mm, and the AC-13SBS modified asphalt mixed layer 62 is an SBS modified asphalt concrete layer with the maximum mixed particle size of 13 mm. The AC-13SBS modified asphalt mixing layer 62 has good high temperature resistance and low temperature resistance, the elasticity and the toughness are good, the bearing capacity of the bridge deck can be enhanced, the AC-20 asphalt mixing layer 61 is paved below the AC-13SBS modified asphalt mixing layer 62, the construction cost can be saved, and the AC-13SBS modified asphalt mixing layer can play a role in extension due to different aggregate particle sizes of the AC-20 asphalt mixing layer and the AC-13SBS modified asphalt mixing layer.

The above embodiments are only preferred embodiments of the present invention, not all embodiments, and other embodiments obtained based on the above embodiments by those skilled in the art without any creative work shall fall within the protection scope of the present invention, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The asphalt concrete surface layer of the waterproof bridge deck comprises a bridge (1) and is characterized in that a layer of epoxy bonding layer (2) covers the bridge (1), a gravel layer (3) is paved on the epoxy bonding layer (2), a concrete pavement layer (4) is arranged on the gravel layer (3), a waterproof layer (5) covers the concrete pavement layer (4), an asphalt mixing layer (6) covers the waterproof layer (5), the waterproof layer (5) comprises a waterproof coating (51), an asphalt sand bonding layer (52) and a flexible layer (53), the waterproof coating (51) is formed by spraying high-molecular epoxy asphalt paint on the surface of the concrete pavement layer (4), the thickness of the formed waterproof coating (51) is 1.7-2 mm, the thickness of the asphalt sand bonding layer (52) is 20-25 mm, and the flexible layer (53) is a graded gravel layer, the paving thickness is 40-50 mm.

2. The asphalt concrete deck of a waterproof deck according to claim 1, wherein: the particle diameter of the bituminous sand bonding layer (52) is 3-5 mm, and the particle diameter of the flexible layer (53) is 5-10 mm.

3. The asphalt concrete deck of a waterproof deck according to claim 1, wherein: the asphalt mixing layer (6) comprises an AC-20 asphalt mixing layer (61) on the lower layer and an AC-13SBS modified asphalt mixing layer (62) on the upper layer, the thickness of the AC-20 asphalt mixing layer (61) is 30-40 mm, and the thickness of the AC-13SBS modified asphalt mixing layer (62) is 30-40 mm.

4. The asphalt concrete deck of a waterproof deck according to claim 1, wherein: the gravel layer (3) is formed by pressing gravel with the particle size of 3-5 mm, and the paving thickness of the gravel layer is 20-25 mm; the thickness of the concrete pavement layer (4) is 50-60 mm.