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Asphalt concrete surface layer and construction method thereof

A kind of asphalt concrete and surface layer technology, which is applied to the cohesive pavement paved on site, buildings, roads, etc., can solve the problems of decreased ice-breaking ability, poor wear resistance, and poor elastic effect, so as to reduce wear and avoid cracking effect

Active Publication Date: 2017-08-22
昆山市交通工程集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the invention patent with the publication number "203684023U" discloses a self-adaptive ice-breaking road surface of conductive asphalt concrete, which fills the concrete with rubber particles, and the elasticity of the rubber particles makes the road surface sink downward. Finally, the rubber particles bounce upwards to break the ice surface and prevent the asphalt concrete pavement from being covered with ice; however, the wear resistance of the rubber particles is worse than that of the asphalt pavement. After 2-3 years, The rubber particles on the asphalt concrete pavement have been ground, the elastic effect has deteriorated, and the ice-breaking ability has decreased, so it needs to be re-constructed

Method used

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  • Asphalt concrete surface layer and construction method thereof
  • Asphalt concrete surface layer and construction method thereof
  • Asphalt concrete surface layer and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: as figure 1 Shown, a kind of bituminous concrete surface course, comprises the leveling course 1 that is arranged on the soil, and leveling course 1 is made of crushed stone and yellow sand, plays the effect of leveling soil, spreads on leveling course 1 and The asphalt concrete base 2 is compacted, and the asphalt concrete base 2 is used as the surface of a high-speed or elevated driveway. The two sides of each lane of the asphalt concrete base 2 are provided with a truncated conical deformation groove 3, and each deformation groove 3 is along the length direction of the driveway. There is one on each side of the meter.

[0034] Such as figure 2 As shown, the depth of the deformation groove 3 is 1.8-2.8 centimeters, the diameter of the upper end of the deformation groove 3 is 2-3 centimeters, and the diameter of the lower end of the deformation groove 3 is less than the diameter of the upper end 0.5-1 centimeter, that is, the longitudinal section shape ...

Embodiment 2

[0037] A construction technique applied to embodiment 1, comprising the following steps:

[0038] Step 1, laying a leveling layer 1 on the roadbed, the thickness of the leveling layer 1 is 5 cm;

[0039] Step 2, laying asphalt concrete on the leveling layer 1 by a paver, and the laying thickness is 3 cm;

[0040] Step 3: Pre-compact the paved asphalt concrete with a road roller at a rolling speed of 15 meters per minute;

[0041] Step 4, the rolling block 10 corresponding to the size of the deformation groove 3 is installed on the circumferential surface of the rolling wheel 9 of the road roller corresponding to the position on both sides of the roadway, and the pre-compacted asphalt concrete layer is compacted by the road roller; The speed is 12 meters per minute;

[0042] Step 5. When the temperature of the asphalt concrete is lower than 30 degrees, manually inject molten modified rubber into the deformation tank 3 and protrude from the surface of the asphalt concrete base...

Embodiment 3

[0044] A construction technique applied to embodiment 1, comprising the following steps:

[0045] Step 1, laying a leveling layer 1 on the roadbed, the thickness of the leveling layer 1 is 10 cm;

[0046] Step 2, lay asphalt concrete on the leveling layer 1 by a paver, and the laying thickness is 7 cm;

[0047] Step 3. Pre-compact the paved asphalt concrete with a road roller at a rolling speed of 20 meters per minute;

[0048] Step 4, the rolling block 10 corresponding to the size of the deformation groove 3 is installed on the circumferential surface of the rolling wheel 9 of the road roller corresponding to the position on both sides of the roadway, and the pre-compacted asphalt concrete layer is compacted by the road roller; The speed is 16 meters per minute, such as image 3As shown, the surface of the rolling wheel 9 is provided with a threaded hole 7, and the bottom of the rolling block 10 is provided with an external thread that cooperates with the threaded hole 7. T...

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Abstract

The invention discloses an asphalt concrete surface layer and a construction method thereof. The asphalt concrete surface layer comprises a lowermost leveling layer, an asphalt concrete base layer is arranged on the leveling layer, two sides of each lane of the asphalt concrete base layer are provided with deformation grooves having the cross section in a shape of a cone frustum having the larger top and the smaller bottom, an elastic block fitting to the deformation groove and aligning at the surface of the asphalt concrete base layer is arranged in the deformation groove, and the deformation groove shrinks entad after cooling so that the elastic block protrudes from the surface of the asphalt concrete base layer. When the weather suddenly becomes cold, because of thermal expansion and cold contraction, asphalt concrete shrinks to the deformation grooves and the volumes of the deformation grooves are reduced so that the elastic block protrudes from the surface of the asphalt concrete base layer. When vehicles pass through the asphalt concrete surface and the road is cold and does not ice, a certain rate reduction effect is obtained, the position can bear deformation quantity of asphalt concrete and asphalt concrete cracks are avoided. When the temperature is high, the elastic block is hidden in the deformation grooves so that the wear of the elastic block is reduced.

Description

technical field [0001] The invention relates to asphalt formula and construction, in particular to an asphalt concrete surface course and a construction method thereof. Background technique [0002] When the vehicle is driving on the road in winter, due to the low temperature in winter, when water vapor or rain and snow fall on the asphalt concrete surface, it is easy to cause the asphalt concrete surface to freeze, and the friction of the frozen road is small. The vehicle is prone to skidding on the road. [0003] In the prior art, the invention patent with the publication number "203684023U" discloses a self-adaptive ice-breaking road surface of conductive asphalt concrete, which fills the concrete with rubber particles, and the elasticity of the rubber particles makes the road surface sink downward. Finally, the rubber particles bounce upwards to break the ice surface and prevent the asphalt concrete pavement from being covered with ice; however, the wear resistance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/26
CPCE01C7/26E01C7/265
Inventor 王春杰谢国炎
Owner 昆山市交通工程集团有限公司
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