The self-developed high-viscosity modified emulsified asphalt (mixing type) is used as the cementing material, the advanced in-situ cold recycling unit is adopted, and the single-layer cold recycling technology with a thickness of 4~20cm is implemented. The technology can realize the asphalt surface layer, semi-rigid base of the original structure layer in-situ cold regeneration, the recycled layer after molding has far more than the original structure layer anti-crack toughness, anti-seepage, anti-rutting performance, mainly used to restore and improve the original pavement structure mechanical properties, usually without additional paving structure layer.
Application scope and prospects:
GT TECH High Toughness Original Structure Layer in situ Cold Regeneration Technology is suitable for structural repair of asphalt surface layers and semi-rigid base layers of various grades of highways, urban and rural roads, effectively solving road surface diseases such as aging, roughness, looseness, rutting and various cracks.
Different types of products can be differentiated based on road grade, operating conditions, traffic volume, and economic requirements.
Cover Type
Application
PG88
Light traffic volume.Structural repair of asphalt surface layer with typical cracking and aging characteristics and structural repair of semi-rigid base layer.
PG94
Medium traffic volume.Structural repair of asphalt surface layerwith dense cracks and severe pavement deformation andstructural repair of semi-rigid base layer.
PG100
Structural repair of asphalt surface layer and semi-rigid base layerfor various types of roads with heavy traffic volume and above.
Note: ① Determine the regeneration depth based on the degree of original pavement diseases and the goal of restoring pavement structural performance; ② 3、 Fourth-class highway, urban secondary trunk roads, branch roads, and rural roads can be directly used as the surface layer after the implementation of high toughness cold recycling. For sections with special requirements for functional recovery such as surface structure and noise reduction performance, it is advisable to add high toughness ultra-thin asphalt wearing course.
Construction Technology:
Technical advantages:
Significant increase in construction efficiency
Recycling width of 3.8 meters, recycling speed of 5m/min, maximum output of 800 tons per hour.
Multi-layer regeneration
Single-layer regeneration depth ranges from 4-20cm, and can realize the integrated regeneration of surface layer and base layer.
Precise reduction regeneration
Mix gradation Adopts undercut milling technology to enhance the uniformity of cutting particles.
Precise control of spraying volume
Precise control of emulsified asphalt and water volume, spraying area and pressure can be flexibly adjusted.
Product advantages:
A product that surpasses traditional cold regeneration technology in terms of performance and efficiency.
In-situ regeneration
Accurately realizing the original structural layer regeneration, no need to add additional pavement structural layer, without affecting the original pavement elevation.
Environmentally friendly
High operational efficiency, short maintenance time, quick opening to traffic, 50% reduction in construction period compared to traditional processes.
Resource Saving
Realize 100% high value recycling of asphalt pavement recycled material, resource saving, environment friendly, wide application, can be used in all levels of highways, municipal roads and rural roads.
Good durability
The target life is over 15 years, with excellent crack resistance, which can effectively resist the repetitive action of very heavy loads and achieve structural stability and durability.
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Compared with the traditional thermal regeneration process, the high-toughness original structure layer in-situ cold regeneration technology has significant comprehensive benefits.
economic benefit
Low energy consumption:Reduce energy consumption by 90%;
Low emissions:Reduce carbon emissions by 60%;
High recovery rate:100% recycled material utilization.
Environmental benefits
Cost saving:Reduce material disposal costs by 100, reduce mechanical transportation by 90 per cent, and reduce total construction costs by 50 per cent
Provincial materials:Reduce the amount of binder by 50% and the amount of stone by 100;
Long life:The expected service life is more than 15 years.
social benefit
Small traffic disturbance:The construction efficiency is improved by more than 100, and the traffic will be opened quickly after the construction is completed;
Small impact on residents:The operation efficiency is high, the service life is high, and the later maintenance is less, which greatly reduces the interference of maintenance to the residents.
High Toughness Original Structure Layer in-Place Cold Regeneration Technology
The self-developed high-viscosity high-elastic modified asphalt is used as the hot-mix asphalt binder, and the high-viscosity modified emulsified asphalt is sprayed synchronously as the adhesive layer oil. The regular thickness is 8-20mm and the limit thickness is 6mm. The formed pavement has the anti-cracking, anti-permeability, anti-sliding and noise reduction performance far exceeding that of regular asphalt pavement.
