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Joint construction method for hot-mix asphalt mixture and emulsified asphalt cold-recycling surface layer

A technology of asphalt mixture and construction method, which is applied to cohesive pavement paved on site, buildings, roads, etc., which can solve problems such as poor connection effect, uneven rolling of joints, and differences in connection methods, so as to improve connection quality , the effect of improving the overall performance

Pending Publication Date: 2021-11-02
ROAD & BRIDGE INT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the connection method between the hot asphalt pavement structure layer and the cold recycled asphalt layer, the joints are not rolled compactly, resulting in poor connection effect

Method used

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  • Joint construction method for hot-mix asphalt mixture and emulsified asphalt cold-recycling surface layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A joint construction method between hot-mix asphalt mixture and emulsified asphalt cold recycled surface course, comprising the following steps:

[0023] (1) milling the old pavement layer 3, making the edge distance of the old pavement layer 3 and the edge distance of the corresponding old road base 1 be 15cm, and cleaning and reclaiming the asphalt mixture for subsequent use;

[0024] (2) Lay the new road base 2 next to the old road base 1, so that the top surface of the new road base 2 and the top surface of the old road base 1 are on the same level, and after the maintenance of the new road base 2 is completed, lay it next to the old road surface layer 3 The asphalt cold regeneration surface layer 4; the new road base 2 contains the following raw materials in parts by weight: 25 parts by weight of stone chips with a particle size of less than 5 mm, 10 parts by weight of crushed stones with a particle size of 5-10 mm, and 10 parts by weight of crushed stones with a pa...

Embodiment 2

[0027] A joint construction method between hot-mix asphalt mixture and emulsified asphalt cold recycled surface course, comprising the following steps:

[0028] (1) milling old pavement layer 3, the edge distance that makes the edge of old pavement layer 3 and its corresponding old road base 1 be 25cm, and clean up and reclaim asphalt mixture for subsequent use;

[0029] (2) Lay the new road base 2 next to the old road base 1, so that the top surface of the new road base 2 and the top surface of the old road base 1 are on the same level, and after the maintenance of the new road base 2 is completed, lay it next to the old road surface layer 3 The asphalt cold regeneration surface layer 4; the new road base 2 contains the following raw materials in parts by weight: 28 parts by weight of stone chips with a particle size of less than 5mm, 12 parts by weight of crushed stones with a particle size of 5-10mm, and 12 parts by weight of gravel with a particle size of 10-20mm 35 parts ...

Embodiment 3

[0032] A joint construction method between hot-mix asphalt mixture and emulsified asphalt cold recycled surface course, comprising the following steps:

[0033] (1) milling old pavement layer 3, make the edge distance of the edge of old pavement layer 3 and its corresponding old road base 1 be 30cm, and clean up and reclaim the asphalt mixture for subsequent use;

[0034] (2) Lay the new road base 2 next to the old road base 1, so that the top surface of the new road base 2 and the top surface of the old road base 1 are on the same level, and after the maintenance of the new road base 2 is completed, lay it next to the old road surface layer 3 The asphalt cold regeneration surface layer 4; the new road base layer 2 contains the following raw materials in parts by weight: 32 parts by weight of stone chips with a particle size of less than 5 mm, 15 parts by weight of gravel with a particle size of 5-10 mm, and 15 parts by weight of gravel with a particle size of 10-20 mm 40 part...

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Abstract

The invention discloses a joint construction method for a hot-mix asphalt mixture surface layer and an emulsified asphalt cold-recycling surface layer, the method comprises the following steps: milling an old pavement layer, and recycling an asphalt mixture for later use; laying a new roadbed layer beside the old roadbed layer, and after the new roadbed layer is maintained, laying an asphalt cold-recycling surface layer beside the old pavement layer; and after the asphalt cold-recycling surface layer is laid, the asphalt cold-recycling surface layer is rolled, and the asphalt cold-recycling surface layer which is 10 cm away from the joint of the asphalt cold-recycling surface layer and the old pavement layer is not rolled, after rolling is completed, interface treating fluid is poured in the non-rolled area, and rolling is conducted after pouring is completed. The joint construction method for the hot-mix asphalt mixture and the emulsified asphalt cold-recycling surface layer has the beneficial effects that the connection quality of the hot-mix asphalt mixture and the emulsified asphalt cold-recycling asphalt is improved, and the overall performance of an asphalt pavement is improved.

Description

technical field [0001] The invention relates to the field of pavement construction, in particular to a joint construction method of hot asphalt mixture and emulsified asphalt cold recycled surface course. Background technique [0002] The asphalt pavement of the old road needs to be rebuilt during the reconstruction and expansion of the expressway. The asphalt milling material produced by the pavement reconstruction is more. If the milling material is discarded, it will cause environmental pollution on the one hand, and on the other hand, the high-quality asphalt in our country is extremely scarce. For the country, it is a waste of resources, and a large amount of new stone is used, and the mining of stone mines will lead to the reduction of forest vegetation, soil erosion and other serious ecological environment damage. From top to bottom, the pavement structure layer is 4cm SMA-13+6cm AC-20+8cm AC-25+10cm ATB-25+40cm cement stabilized macadam base + 20cm cement stabilized ...

Claims

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Application Information

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IPC IPC(8): E01C7/18E01C7/20E01C7/24E01C7/26E01C3/02C04B28/00
CPCE01C7/18E01C7/187E01C7/20E01C7/24E01C7/26E01C3/02C04B28/00C04B2111/0075C04B14/02C04B24/36C04B18/20C04B18/12
Inventor 白松康笠曹建豪周彪侯兆隆
Owner ROAD & BRIDGE INT
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