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
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[0022] Example 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-skid interface layer 2 coated on a bridge deck steel plate 1 and a resin asphalt waterproof and anti-skid interface layer 2 laid on Cold-mix 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 of the maintenance lane, dig out the damaged original bridge deck pavement, and re-blast the bridge deck steel plate to reach the standard of surface cleanliness Sa2.5 and roughness 60-100μm; then immediately scratch the surface Apply a layer of mixed resin asphalt, the scraping amount is generally 1.0-1.2kg / m 2 , And then evenly sprinkle a layer of small gravel 4 with a particle size of 3-5mm on the s...
Example Embodiment
[0035] Example 2
[0036] The main bridge of a newly built cable-stayed bridge in Zhejiang has a span of 680 meters and adopts a steel box girder structure. The top thickness of the steel box girder is 14mm. The bridge is an important channel connecting the port. It is estimated that there will be more than 20,000 container trucks daily. 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 use the resin asphalt concrete (ER) of the present invention as the steel bridge deck pavement structure after comparing and selecting the schemes. The paving design thickness is 60mm, the specific design plan is as follows:
[0037] 1. The surface cleanliness of the bridge deck steel plate 1 after shot blasting and rust removal reaches Sa.2.5 level, and the roughness reaches 60-100μm, and then the resin asphalt 1.0-1.2kg / m is scraped. 2 , Sprinkle 3-5mm small gravel 4 at 4kg / m 2 After curing for 3 days, the resin...
Example Embodiment
[0041] Example 3
[0042] The Jiangsu XX Bridge is a steel box girder suspension bridge with a main span of 1590 meters. The original deck pavement is a 5.5cm thick thermoset 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. Surface water entered the steel plate position at the bottom of the pavement layer through the cracks, resulting in corrosion of the bridge deck steel plate, and the pavement layer was more damaged under the action of water. serious. Although ordinary modified asphalt concrete and epoxy concrete are used to repair the damaged parts many times, the diseases of the bridge deck paving cannot be eliminated. In 2011, it was decided to use the resin asphalt concrete ER pavement structure to repair the heavily damaged heavy-duty driveway on the original bridge deck.
[0043] The specific implementation steps are:
[0044] 1. Close the t...
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