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Construction method and construction system for on-site cold regeneration

A construction method and cold recycling technology, which can be used in on-site coagulation pavement, roads, road repair and other directions, can solve the problems of difficult control of construction quality, low construction efficiency, long maintenance time, etc., and improve the construction efficiency of cold recycling. , construction quality control, the effect of improving construction efficiency

Inactive Publication Date: 2017-07-28
江苏北极星交通产业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, cold recycling of cement and emulsified asphalt is mostly used for cold regeneration of pavement. Cold recycling of cement is only suitable for cold recycling of pavement subbase, while cold recycling of emulsified asphalt has higher requirements on emulsifier formula and asphalt types. , so that the uncertainty in the construction process increases, the construction quality is not easy to control, and the cold recycling of emulsified asphalt has the defects of large amount of asphalt and long maintenance time
In addition, the existing cold-in-place recycling construction system is subject to design flaws, and the construction efficiency is low

Method used

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  • Construction method and construction system for on-site cold regeneration
  • Construction method and construction system for on-site cold regeneration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Step 1, foaming condition experiment. That is, the indoor test determines the optimal foaming temperature and water consumption of foamed asphalt, and the indoor foamed asphalt foaming test machine is preferably Wirtgen indoor foaming equipment WLB10;

[0065] In order to meet the foamed asphalt expansion rate and half-life required for construction, set the asphalt dosage and foaming water consumption of the regenerator, and use the test nozzle on the regenerator to conduct a foaming test before construction to check the foaming effect. The foamed asphalt is preferably 70 , No. 90 base asphalt.

[0066] Step 2: The pre-mixed active filler and crushed stone are evenly spread by the spreader according to the computer control system, and the cold recycling machine pushes the asphalt tanker and the water tanker to start operation through the push rod. Sprinkle ready-mixed active filler and gravel on the road surface to be cooled and regenerated by using a pre-mixed materi...

Embodiment 2

[0072] Step 1, foaming condition experiment. That is, the indoor test determines the optimal foaming temperature and water consumption of foamed asphalt, and the indoor foamed asphalt foaming test machine is preferably Wirtgen indoor foaming equipment WLB10;

[0073] In order to meet the foamed asphalt expansion rate and half-life required for construction, set the asphalt dosage and foaming water consumption of the regenerator, and use the test nozzle on the regenerator to conduct a foaming test before construction to check the foaming effect. The foamed asphalt is preferably 70 , No. 90 base asphalt.

[0074] Step 2: The pre-mixed active filler is evenly spread by the spreading vehicle according to the computer control system, and the cold recycling machine pushes the asphalt tanker and the water tanker to start operation through the pushing rod. Sprinkle the pre-mixed active filler on the pavement to be cooled and regenerated by using the pre-mixed material sprayer. The r...

Embodiment 3

[0080] Step 1, foaming condition experiment. That is, the indoor test determines the optimal foaming temperature and water consumption of foamed asphalt, and the indoor foamed asphalt foaming test machine is preferably Wirtgen indoor foaming equipment WLB10;

[0081] In order to meet the foamed asphalt expansion rate and half-life required for construction, set the asphalt dosage and foaming water consumption of the regenerator, and use the test nozzle on the regenerator to conduct a foaming test before construction to check the foaming effect. The foamed asphalt is preferably 70 , No. 90 base asphalt.

[0082] Step 2: The pre-mixed active filler is evenly spread by the spreading vehicle according to the computer control system, and the cold recycling machine pushes the asphalt tanker and the water tanker to start operation through the pushing rod. Sprinkle the pre-mixed active filler on the pavement to be cooled and regenerated by using the pre-mixed material sprayer. The r...

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Abstract

The invention discloses a construction method and a construction system for in-situ cold regeneration. The construction method uses cold recycled materials including foamed asphalt, pre-mixed active filler, crushed stone and old RAP materials for in-situ cold regeneration; the pre-mixed active filler includes 60-80wt% cement and 20-40wt% pulverized coal Ash and / or blast furnace slag powder. The invention also provides a construction system for in-situ cold regeneration of foam, which saves the amount of asphalt, has a simple and clear construction process, improves the construction efficiency of in-situ cold regeneration of foam asphalt, and enables the construction quality to be controlled.

Description

technical field [0001] The invention relates to the technical field of road maintenance, in particular to a construction method and a construction system for in-situ cold regeneration. Background technique [0002] With the continuous and rapid development of my country's economy, the road traffic volume is increasingly heavy, and the axle load continues to increase. The focus of the road industry has shifted from road construction to road maintenance. The cost reduction and environmental protection and energy saving of pavement regeneration technology due to the recycling of old materials have become the primary advantages of the regeneration process. Among the many pavement regeneration schemes, cold regeneration has become the main regeneration scheme for the pavement base and middle and lower layers due to its low carbon emissions and low impact on the environment; [0003] In the existing technology, cold recycling of cement and emulsified asphalt is mostly used for co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C19/10E01C7/26
CPCE01C19/1004E01C7/26
Inventor 商健林方博文王永辉张华丽徐海青张帅
Owner 江苏北极星交通产业集团有限公司
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