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A kind of bridge deck pavement waterproof bonding layer and construction method thereof

A technology for waterproof bonding layer and bridge deck paving, applied in bridges, bridge parts, bridge construction and other directions, can solve the problems of easy rolling off, poor durability, poor waterproof effect, etc., achieve fast temperature loss, and ensure initial density. and smoothness, the effect of speeding up the paving

Active Publication Date: 2022-05-06
CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bridge deck waterproof adhesive layer and its construction method in view of the problems of poor waterproof effect, poor durability and easy rolling off of the bridge deck pavement adhesive layer in the prior art. The waterproof bonding layer has good waterproof ability, anti-rutting ability and durability, and the invention provides a construction method, which can not only effectively improve the construction efficiency, but also ensure the construction quality of the waterproof layer of the bridge deck, and effectively improve the waterproof performance. Layer flatness and driving comfort

Method used

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  • A kind of bridge deck pavement waterproof bonding layer and construction method thereof
  • A kind of bridge deck pavement waterproof bonding layer and construction method thereof
  • A kind of bridge deck pavement waterproof bonding layer and construction method thereof

Examples

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Effect test

Embodiment 1

[0063] A bridge section is a large bridge across a river and a lake. It is located in a lake basin, and has a large amount of rainfall and water mist all year round. In order to improve the waterproof ability of the bridge pavement structure, the driving comfort and the service life of the pavement, a new bridge pavement waterproof bonding layer and its construction method are provided.

[0064] The waterproof adhesive layer is mainly composed of the following raw materials,

[0065] 7 parts of SBS modified asphalt; 25 parts of basalt gravel with a particle size gradation of 3-6mm; 72 parts of basalt gravel with a particle size gradation of 0-3mm; 1.3 parts of quicklime powder; 1.7 parts of mineral powder.

[0066] The waterproof adhesive layer is constructed by the following method.

[0067] Check the lower bearing layer before construction, clean up pollutants and garbage in time, fill expansion joints and prevent pollution, complete mechanical equipment repair and maintena...

Embodiment 2

[0079] Waterproof adhesive layer raw material

[0080] 6.8 parts of SBS modified asphalt; 23 parts of basalt gravel with particle size gradation of 3-6mm; 74 parts of basalt gravel with particle size gradation of 0-3mm; 1.0 part of quicklime powder; 2.0 parts of mineral powder.

[0081] Construction method

[0082] Step 1. Clean up the bridge deck to be laid and leveled; mix the raw materials of the waterproof adhesive layer according to the mix ratio. The mixing time is 30s, and the mixing temperature is controlled at 170°C;

[0083] Step 2. Use a high-power full-width paver to spread the mixture to the layer to be paved. In order to ensure the flatness of the paved surface and construction efficiency, a high-power full-width paver is used to pave the upper layer of asphalt concrete. During the construction process, full braking functions such as speed, material delivery, material level, frequency, amplitude, anti-dropping at stop, and anti-lifting at start are guarantee...

Embodiment 3

[0089] Waterproof adhesive layer raw material

[0090] 7.2 parts of SBS modified asphalt; 27 parts of basalt gravel with particle size gradation of 3-6mm; 70 parts of basalt gravel with particle size gradation of 0-3mm; 1.2 parts of quicklime powder; 2.3 parts of mineral powder.

[0091] Construction method

[0092] Step 1. Clean up the bridge deck to be laid and leveled; mix the raw materials of the waterproof adhesive layer according to the mix ratio. The mixing time is 50s, and the mixing temperature is controlled at 180°C;

[0093] Step 2. Use a high-power full-width paver to spread the mixture to the layer to be paved. In order to ensure the flatness of the paved surface and construction efficiency, a high-power full-width paver is used to pave the upper layer of asphalt concrete. During the construction process, full braking functions such as speed, material delivery, material level, frequency, amplitude, anti-dropping at stop, and anti-lifting at start are guarante...

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Abstract

The invention relates to a bridge deck pavement waterproof bonding layer and a construction method thereof. The waterproof bonding layer is mainly composed of the following raw materials: 6 to 8 parts of SBS modified asphalt; 23 to 27 parts of coarse aggregate; 70-74 parts of fine aggregate; 0.7-1.3 parts of quicklime powder; 1.7-2.3 parts of mineral powder; wherein, the coarse aggregate and the fine aggregate are basalt crushed stones with different particle size distributions. The invention makes the waterproof adhesive layer have good waterproof ability, rutting resistance ability and durability through the selection of raw material components and the targeted adjustment of the mixing ratio. In the construction process, the waterproof adhesive layer of the present invention is first paved and then rolled under the premise of preparing the mixture, which can ensure the uniformity of the materials used and the thickness of the mixture construction, and will not be damaged during the paving process. It can effectively guarantee the construction efficiency and construction quality, and at the same time, the waterproof bonding layer has good waterproof stability.

Description

technical field [0001] The invention relates to the technical field of road surface construction, in particular to a bridge deck pavement waterproof bonding layer and a construction method thereof. Background technique [0002] Bridge deck pavement is an important part of the bridge deck system. From bottom to top, bridge deck pavement is generally divided into reinforced concrete deck, concrete leveling layer, waterproof bonding layer, steel mesh, and cement concrete layers. Among them, the waterproof adhesive layer plays an important role in the pavement of the bridge deck. The waterproof layer not only plays the role of waterproof and drainage, but also plays the role of linking the previous and the next, such as bonding. [0003] At present, SBS modified asphalt and ready-mixed gravel seal are commonly used as the waterproof adhesive layer of bridge deck pavement, but the modified asphalt macadam seal itself is not ideal in terms of waterproof effect and durability, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26E01D19/08E01D21/00E01D101/20C04B111/27
CPCC04B26/26E01D19/083E01D21/00E01D2101/20C04B2111/27C04B2201/50C04B2111/0075C04B18/12C04B22/064
Inventor 李兆龙何明静路兆印张星王玉杰聂健行范文超褚智文陈乃栋邢兰涛潘辉郭超卢成永
Owner CHINA RAILWAY 23RD BUREAU GRP NO 1 ENG
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