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Warm-mixing type asphalt hot-in-place recycling construction method

A construction method and warm mixing technology, which can be applied to roads, climate change adaptation, on-site coagulation pavement, etc. It can solve the problems of joint damage and easy water leakage on the road surface, and achieve less traffic interference and longer service life Life, effect of lowering heating temperature

Inactive Publication Date: 2019-04-19
CCCC SECOND HIGHWAY ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to cold milling, the original pavement aggregates at the joints are often milled loose, if the old and new pavement is not well combined, it is very easy to leak water, and the joints of the pavement will be destroyed prematurely

Method used

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Examples

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Comparison scheme
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specific Embodiment approach

[0027] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. , any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope covered by the technical content disclosed in the present invention without affecting the effect and purpose of the present invention. .

[0028] At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable scope of the invention and the change or adjustment of its relative relationship shall also be regarded as the practicable scope of the present invention without any substantial change in t...

Embodiment 1

[0030] The invention discloses a warm-mix asphalt hot-in-place regeneration construction method, which comprises the following steps:

[0031] Step 1) Heating the pavement to be treated, the heating temperature range is 125~195°C;

[0032] Step 2) Rake the pavement to be treated, wherein the raked width of the pavement to be treated is 10-20cm narrower than the heated width of the pavement to be treated, and the temperature of the pavement to be treated when raking is greater than 100°C;

[0033] Step 3) Spray regenerant and warm mix agent, wherein the amount of regenerant is 7-15% of the weight of asphalt in the pavement harrowed material to be treated, and the amount of warm mix agent is 10-15% of the weight of regenerant;

[0034] Step 4) Stirring, mix the pavement raking material to be treated, regeneration agent, and warm mixing agent, then add new asphalt mixture and mix to form a uniform recycled mixture, wherein the temperature of the recycled mixture is 115~125°C, the...

Embodiment 2

[0038] The invention discloses a warm-mix asphalt hot-in-place regeneration construction method, which comprises the following steps:

[0039] Step 1) Heating the pavement to be treated, the heating temperature range is 125~195°C;

[0040] Step 2) Raking the pavement to be treated, wherein the raking width of the pavement to be treated is 10-20cm narrower than the heated width of the pavement to be processed, and the temperature of the pavement to be treated is greater than 100°C when raking;

[0041] Step 3) Spray regenerant and warm mix agent, wherein the amount of regenerant is 7-15% of the weight of asphalt in the pavement harrowed material to be treated, and the amount of warm mix agent is 10-15% of the weight of regenerant;

[0042] Step 4) Stirring, mix the pavement raking material to be treated, regeneration agent, and warm mixing agent, and then add new asphalt mixture and mix it into a uniform recycled mixture, wherein the temperature of the recycled mixture is 115~1...

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Abstract

The invention discloses a warm-mixing type asphalt hot-in-place recycling construction method. The method includes steps: step 1) heating a to-be-treated pavement, wherein a heating temperature rangeis 125-195 DEG C; step 2) raking the to-be-treated pavement, wherein the to-be-treated pavement raking width is 10-20cm smaller than the to-be-treated pavement heating width of each side; step 3) spraying a recycling agent and a warm mixing agent, wherein consumption of the recycling agent is 7-15% of the weight of asphalt in a to-be-treated pavement loosened material, and consumption of the warmmixing agent is 10-15% of the weight of the recycling agent; step 4) stirring, to be more specific, mixing the to-be-treated pavement loosened material, the recycling agent and the warm mixing agent,adding a new asphalt mixture, and mixing to obtain a uniform recycled mixture; step 5) paving, to be more specific, paving the recycled mixture obtained in the step 4); step 6) rolling, to be more specific, sequentially adopting a double drum roller and a tire roller for combined rolling of the paved pavement.

Description

technical field [0001] The invention relates to the technical field of road surface construction, in particular to a construction method for hot-in-place regeneration of warm-mixed asphalt. Background technique [0002] At present, my country's highway construction is developing rapidly, and the annual investment scale is huge. The asphalt pavement of highways built successively after the 1990s has entered the period of major and medium repairs; due to a large amount of traffic flow and overloading, the roads built in the last 10 years have also suffered from slight ruts, cracks and other diseases. Entered the medium and minor repair period, resulting in a large number of excavation, milling asphalt mixture was discarded. On the one hand, it causes environmental pollution, and on the other hand, it is a waste of resources for a country that lacks high-quality asphalt, such as my country. Moreover, a large number of new stone materials and mining of stone mines will lead to ...

Claims

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Application Information

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IPC IPC(8): E01C7/18E01C23/14E01C23/06E01C23/082E01C19/28
CPCE01C7/187E01C19/28E01C23/065E01C23/082E01C23/14Y02A30/30
Inventor 薛成杜长军徐剑薛淏文张建军李晓林杨永斌潘博博史铁坤
Owner CCCC SECOND HIGHWAY ENG CO LTD
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