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Resin asphalt concrete paving structure capable of being constructed at normal temperature, and paving method thereof

A resin asphalt and concrete technology, which is applied to the coagulation pavement, roads, roads and other directions of on-site paving, can solve the problems of changing the high temperature and heavy load resistance of asphalt mixtures, weak anti-rutting ability, and increased construction temperature, and achieves obvious results. The effect of anti-corrosion and waterproof ability, guaranteeing the strength of the road surface, and obvious resistance to high temperature in summer

Active Publication Date: 2012-12-19
宁波天意钢桥面铺装工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the root cause of rutting on asphalt pavement is determined by the rheological properties of asphalt in the asphalt mixture. As the temperature increases and the load increases, the rheological properties of asphalt become more obvious. Add rubber or plastics and other polymers to change the rheology or viscosity of asphalt, and then change the high temperature and heavy load capacity of asphalt mixture. This modification is only a relative improvement in performance compared with base asphalt. The rheological properties under load have not changed fundamentally, so the anti-rutting ability is still weak when the temperature is high or when passing heavy-duty vehicles, and the addition of a large amount of polymer materials also makes the construction temperature of asphalt mixture mixing and paving more difficult. Greatly improved, the construction difficulty is greatly increased

Method used

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  • Resin asphalt concrete paving structure capable of being constructed at normal temperature, and paving method thereof
  • Resin asphalt concrete paving structure capable of being constructed at normal temperature, and paving method thereof
  • Resin asphalt concrete paving structure capable of being constructed at normal temperature, and paving method thereof

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Embodiment 1

[0023] The present invention is a resin asphalt concrete pavement structure that can be constructed at room temperature. The pavement structure includes a resin asphalt waterproof and anti-slip interface layer 2 coated on a bridge deck steel plate 1 and a resin asphalt waterproof and anti-slip interface layer 2 laid on the resin asphalt interface layer 2. Cold-mixed resin asphalt concrete layer 3, according to the construction sequence, the pavement composite structure is divided into two layers:

[0024] The first layer: resin asphalt waterproof and anti-skid interface layer 2

[0025] Close the traffic on the maintenance lane, dig out the damaged original bridge deck pavement, and re-shot blast and derust the bridge deck steel plate to meet the standards of surface cleanliness Sa2.5 and roughness 60-100 μm; then immediately scrape on the surface Apply a layer of mixed resin asphalt, the amount of scraping is generally 1.0-1.2kg / m 2 , and then evenly spread a layer of small ...

Embodiment 2

[0036]The main bridge span of a newly built cable-stayed bridge in Zhejiang is 680 meters. It adopts a steel box girder structure. The thickness of the steel box girder roof plate is 14mm. The bridge is an important channel connecting the port. It is estimated that there are more than 20,000 heavy container vehicles per day. The area where the bridge is located is hot and rainy, and the highest temperature in summer can reach 41°C. The design unit decided to adopt the resin asphalt concrete (ER) of the present invention as the steel bridge deck pavement structure after scheme comparison and selection. The paving design thickness is 60mm, and the specific design scheme is as follows:

[0037] 1. The surface cleanliness of steel plate 1 on the bridge deck reaches Sa.2.5 level after shot blasting and derusting, and the roughness reaches 60-100 μm, and then scrape and coat resin asphalt at 1.0-1.2kg / m 2 , spread 3-5mm particle size of small gravel 4 is 4kg / m 2 After curing for 3...

Embodiment 3

[0042] Jiangsu XX Bridge is a steel box girder suspension bridge with a main span of 1590 meters. The original bridge deck pavement is a 5.5cm thick thermosetting epoxy asphalt concrete double-layer pavement structure imported from abroad. After 5 years of operation, many cracks and potholes appeared in the original steel bridge deck pavement, and surface water entered the steel plate at the bottom of the pavement layer through the cracks, causing corrosion of the steel plate on the bridge deck, and the pavement layer was more damaged under the action of water. serious. Although ordinary modified asphalt concrete and epoxy concrete were used to repair the damaged parts many times, the disease of bridge deck pavement could not be eliminated. In 2011, it was decided to use resin asphalt concrete ER pavement structure to repair the heavy-duty lane with severe damage to the original bridge deck.

[0043] The specific implementation steps are:

[0044] 1. Close the traffic on the...

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Abstract

The invention discloses a resin asphalt concrete paving structure capable of being constructed at normal temperature, and a paving method thereof. The paving structure is characterized by comprising a waterproof and antiskid resin asphalt boundary layer coated on a bridge floor steel plate, and a cold-mixed resin asphalt concrete layer paved on the waterproof and antiskid resin asphalt boundary layer, the waterproof and antiskid resin asphalt boundary layer comprises resin asphalt and small broken stones evenly spreading on the resin asphalt and having the particle size of 3-5mm, the coating weight of the resin asphalt on the bridge floor steel plate is 1.0-1.2kg / m<2>, the spreading quantity of the small broken stones is 3-5kg / m<2>, the cold-mixed resin asphalt concrete layer comprises the compositions in percentage by weight: 6-10% of resin asphalt, 90-94% of grading gravel aggregate, and 0.1-0.3% of polyester fiber, and the resin asphalt comprises the compositions in percentage by weight: 40% of epoxy resin, 40% of petroleum asphalt and 20% of modified amine hardener. The resin asphalt concrete paving structure has the advantages of having obvious antiseptic and waterproof capabilities and summer high temperature resisting capability, and the heavy-load vehicle has no track harm after running for a long time.

Description

technical field [0001] The invention relates to a pavement pavement for roads and bridges, in particular to a resin asphalt concrete pavement structure and a pavement method that can be constructed at room temperature. Background technique [0002] Rutting refers to the unrecoverable concave deformation of the asphalt pavement at the position of the wheel track after a certain period of operation. In hot areas where there are many heavy-duty vehicles, road rutting is more common. When the rut is deep, due to the loss of the flatness of the road surface, the comfort of the vehicle on the road surface becomes poor, the anti-slip characteristics of the rough surface are weakened, and the driving safety is also reduced. At the same time, the actual thickness of the pavement becomes smaller, and the stress state of the pavement becomes more unfavorable. Other pavement diseases such as oil flooding and cracking also follow one after another, and the service life of the pavement i...

Claims

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Application Information

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IPC IPC(8): E01C7/20
Inventor 张志宏卓武极林道锦
Owner 宁波天意钢桥面铺装工程有限公司
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