A continuous prefabricated asphalt pavement and its construction method

Active Publication Date: 2021-07-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes a continuous prefabricated asphalt pavement and its construction method in order to solve the problems that the existing prefabricated asphalt pavement is prone to reflection cracks and low construction efficiency

Method used

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  • A continuous prefabricated asphalt pavement and its construction method
  • A continuous prefabricated asphalt pavement and its construction method
  • A continuous prefabricated asphalt pavement and its construction method

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Experimental program
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Effect test

specific Embodiment approach 1

[0030] Embodiment 1: The continuous prefabricated asphalt pavement in this embodiment is composed of a prefabricated asphalt pavement slab, an upper layer 6, a cushion layer 7 and a soil foundation 8;

[0031] The cushion layer 7 is arranged on the upper surface of the soil foundation 8, the prefabricated asphalt road slab is arranged on the upper surface of the cushion layer 7, and the upper layer 6 is arranged on the upper surface of the prefabricated asphalt road slab and bonded by an emulsified asphalt adhesive;

[0032] The prefabricated asphalt road slab is composed of a plurality of prefabricated slab units; the prefabricated slab unit is composed of a base layer 1, a lower layer 2 and a middle layer 3; the lower layer 2 is arranged on the upper surface of the base layer 1 and bonded by an emulsified asphalt adhesive , the side of the lower layer 2 is set on the inner side of the side of the base layer 1, the middle layer 3 is set on the upper surface of the lower layer ...

specific Embodiment approach 2

[0037] Specific Embodiment 2: The difference between this embodiment and Specific Embodiment 1 is that the double-tenon coupling block is composed of two tenons 5 with the same shape and matched with the tenon groove 4. One end of the tenon 5 is a larger end surface, and the other end is The smaller ends of the two mortises 5 are relatively fixed. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the tenon groove 4 is a trapezoidal groove, and the smaller bottom side of the tenon groove 4 is an opening. Other steps and parameters are the same as those in the first embodiment.

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Abstract

A continuous prefabricated asphalt pavement and its construction method relate to a prefabricated asphalt pavement and its installation method. The purpose is to solve the problems that the existing prefabricated asphalt pavement slabs are prone to reflective cracks and the construction efficiency is low. The road surface of the present invention is composed of a prefabricated asphalt pavement slab, an upper layer, a cushion layer and a soil foundation; the prefabricated asphalt pavement slab is arranged on the upper surface of the cushion layer, and the upper layer is arranged on the upper surface of the prefabricated asphalt pavement slab and bonded by an emulsified asphalt adhesive; The gaps between adjacent lower layers and the T-shaped joints between adjacent middle layers are filled with asphalt mixture. Method: Prefabricated slab units and double tenon joint blocks are made in the precast yard, soil foundation is paved on the construction site, a cushion is laid on the soil foundation, prefabricated asphalt pavement slabs are assembled and the upper layer is paved. The continuous prefabricated asphalt pavement of the present invention has good smoothness, integrity and continuity, reduces reflection cracks, has good durability and short construction period. The invention is suitable for asphalt pavement laying.

Description

technical field [0001] The invention relates to a prefabricated asphalt pavement and its installation method. Background technique [0002] Asphalt pavement is widely used in municipal roads and expressways in our country due to its advantages of high flatness and strong comfort. At present, the construction technology of cast-in-place asphalt pavement mainly has problems such as long construction period, difficulty in controlling construction quality, and environmental pollution. First of all, the construction period of asphalt pavement is seriously affected by weather and temperature, the construction procedure is low in automation, and the base construction and maintenance time is long, resulting in a long construction period. Secondly, the construction technology of cast-in-place asphalt pavement is difficult to precisely control the construction process due to the long distance of material transportation and serious differences in the construction environment, which in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C7/18E01C7/24E01C5/12B28B3/02
CPCB28B3/02E01C5/12E01C7/18E01C7/185E01C7/24
Inventor 徐慧宁张驰石浩邢超谭忆秋
Owner HARBIN INST OF TECH
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