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Asphalt concrete sliding joint structure and construction technology

An asphalt concrete and sliding joint technology, applied in the field of asphalt concrete, can solve the problems of uneven displacement of asphalt concrete panels, weak asphalt concrete panels, difficult geomembrane anchors, etc. desired effect

Active Publication Date: 2022-04-22
STATE GRID XINYUAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anti-seepage of geomembrane has a remarkable feature. The strength of the asphalt concrete panel is weak, and the asphalt concrete panel will produce uneven displacement, which is difficult to be used as the anchor of the geomembrane.

Method used

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  • Asphalt concrete sliding joint structure and construction technology
  • Asphalt concrete sliding joint structure and construction technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, adopt asphalt mortar to seal;

[0030] Apply the mixed asphalt mastic and resin anchor coating on the asphalt concrete mechanical performance test piece, the application temperature is 150 ℃ ~ 170 ℃, and the application thickness is 2mm. The application process should be applied quickly and evenly. Cover the cut geomembrane on the asphalt mastic to ensure the bonding between the geomembrane and the asphalt concrete;

[0031] Repeat the above test steps on the surface of the covered geomembrane to smear the surface layer of asphalt mastic. After the asphalt mastic is cooled to room temperature, spread the mixed asphalt mortar evenly on the asphalt mastic. The paving thickness is 1.5 cm, to achieve the sealing effect, the paving temperature is about 180°C;

[0032] After the test, the specimen was cooled to room temperature.

Embodiment 2

[0033] Embodiment two, adopt anti-seepage layer asphalt concrete to seal;

[0034] Apply the mixed asphalt mastic and resin anchor coating on the asphalt concrete mechanical performance test piece, the application temperature is 150 ℃ ~ 170 ℃, and the application thickness is 2mm. The application process should be applied quickly and evenly. Cover the cut geomembrane on the asphalt mastic to ensure the bonding between the geomembrane and the asphalt concrete;

[0035] Repeat the above test steps on the surface of the covered geomembrane to smear the surface layer of asphalt mastic. After the asphalt mastic is cooled to room temperature, spread the mixed asphalt mortar evenly on the asphalt mastic. The paving thickness is 1.5 cm, to achieve the sealing effect, the paving temperature is about 180°C;

[0036] After the test, the specimen was cooled to room temperature.

[0037] After the specimens are cooled, lift one end of the joints of the two specimens vertically to observe...

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Abstract

The invention discloses an asphalt concrete sliding joint structure which comprises an asphalt concrete layer and a waterproof film layer, the waterproof film layer covers the asphalt concrete layer, an asphalt mastic layer covers the waterproof film layer, an asphalt mortar layer covers the asphalt mastic layer, and a resin anchoring layer is arranged between the asphalt mastic layer and the asphalt concrete layer. The geomembrane is arranged between the asphalt concrete and the asphalt mortar layer, and the geomembrane is coated with the asphalt mastic layer and the resin anchoring layer, so that the bonding strength can be ensured, the waterproof performance is good, and the seepage-proofing requirement of the sliding joint can be met.

Description

technical field [0001] The invention relates to the technical field of asphalt concrete, and more specifically relates to an asphalt concrete sliding joint structure and construction technology. Background technique [0002] With the development of water conservancy and hydropower, especially the "Pumped Storage Medium and Long-term Development Plan (2021-2035)" issued by the National Energy Administration, the construction of pumped storage power stations will usher in a stage of rapid development. The proportion of seepage structure will further increase. For the asphalt concrete panel anti-seepage system, the joint between the asphalt concrete panel and the ordinary concrete rigid structure is the weak point in the entire panel anti-seepage system. In the built projects, it is often found that there are problems in the joints, which cause leakage. Relevant experimental studies have shown that the joint part adopts the form of sliding joint, which can effectively reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/16E02B3/00C04B26/26C08L67/06C08K5/14
CPCE02B3/16E02B3/00C04B26/26C08L67/06C04B14/02C04B14/42C04B2103/44C08K5/14Y02A30/30
Inventor 王轮祥赵常伟苏胜威张强赵常潘瑞强莫智云
Owner STATE GRID XINYUAN