Construction of new asphalt pavement overturned? The secret to improving the adhesion of road hot-melt marking paint!

In the field of road construction, the problem of insufficient adhesion is often encountered when drawing hot melt markings on newly laid asphalt pavements, which troubles many construction teams. TOP ROAD Transportation Technology Co., Ltd., as a professional supplier of road marking materials, has developed an effective solution based on years of technical accumulation and engineering practice experience. This article will delve into the causes of insufficient adhesion of new asphalt pavement markings and share key techniques for improving adhesion, helping construction teams avoid the risk of “overturning” and ensure the quality of markings is long-lasting and reliable.

Special challenges of new asphalt pavement

The newly laid asphalt pavement may appear smooth and ideal, but in reality, there are many factors that can affect the adhesion of the markings. The engineering team of TOP ROAD Transportation Technology has found that the free oil content in new asphalt is the main reason for the decrease in adhesion of marking lines. These oils will seep out during the construction of high-temperature marking coatings, forming an isolation layer that seriously affects the bonding strength between the coating and the road surface.

In addition, there are significant differences in the surface pore structure and temperature stability of the new asphalt pavement compared to the cured pavement. TOP ROAD’s technical experts point out that newly laid asphalt pavement is often too “soft” and prone to slight deformation under the high temperature of hot melt marking construction. This dynamic change can damage the initial bond between the marking and the pavement, leading to an increased risk of later peeling.

Scientific judgment of construction timing

Choosing the appropriate construction timing is the primary condition for ensuring adhesion. TOP ROAD Transportation Technology suggests using a “dual judgment method” to evaluate the suitability of marking construction for new asphalt pavements: on the one hand, observe the color change of the pavement and wait for the asphalt surface to change from bright black to dark matte; On the other hand, conduct simple tactile tests to ensure that the road surface is no longer sticky.

TOP ROAD’s technical team has also developed differentiated waiting time recommendations for different climate conditions. In the high temperature season, the stability rate of asphalt is relatively fast, and the waiting period can be appropriately shortened; In low temperature and humid environments, it is necessary to extend the curing time. This flexible construction guidance helps clients optimize project progress while ensuring quality.

Construction of new asphalt pavement, adhesion of hot-melt marking, hot-melt marking coating

Fine craftsmanship for surface treatment

Professional surface treatment can significantly improve the adhesion of markings. TOP ROAD Transportation Technology recommends using a two-step treatment method of “cleaning+activation”: first, use high-pressure air or professional cleaning equipment to thoroughly remove surface dust and loose particles; Subsequently, a specialized asphalt activator is applied, which is a specially formulated treatment agent that can effectively neutralize surface oil and enhance interfacial adhesion.

For road sections with severe oil leakage, TOP ROAD has also developed the “hot air pretreatment” technology. By controlling the temperature and duration of the hot air, the asphalt surface can be moderately softened to promote fusion without causing excessive damage. This refined surface treatment process creates ideal interface conditions for subsequent marking construction.

Professional optimization of coating formula

TOP ROAD Transportation Technology has developed a specialized marking coating formula to address the unique characteristics of new asphalt pavements. This improved coating contains special penetrating components that can form micro mechanical interlocking with the asphalt surface layer; Simultaneously adding interface active substances can effectively improve the chemical compatibility with asphalt.

In terms of resin system selection, TOP ROAD’s products use composite resins with more uniform molecular weight distribution to ensure good elastic adaptability even when the asphalt temperature changes. This formula design not only ensures rapid bonding in the initial stage, but also adapts to the natural settlement and deformation of asphalt pavement in the later stage, achieving long-term stable adhesion effect.

Construction of new asphalt pavement, adhesion of hot-melt marking, hot-melt marking coating

Accurate control of construction parameters

Scientific adjustment of construction parameters is a key step in ensuring adhesion. TOP ROAD Transportation Technology suggests adopting a “medium temperature fast application” process strategy for new asphalt pavement: appropriately reducing the construction temperature to minimize disturbance to the asphalt surface, while accelerating the construction speed to avoid local overheating.

In terms of equipment adjustment, TOP ROAD’s technical team emphasizes the precise control of scraper angle and pressure. By optimizing these parameters, it is possible to ensure that the coating fully fills the micro pores of the road surface and forms a strong mechanical anchorage without damaging the asphalt surface. This precise construction control significantly improves the adhesion of the markings.

A complete system for quality verification

To ensure the long-term reliability of the adhesion of the markings, TOP ROAD Transportation Technology has established a complete quality verification system. From initial peeling testing to later tracking and evaluation, form a closed-loop quality control. Our technical service team will guide customers to conduct standardized on-site testing to ensure that every marking achieves the desired adhesion effect.

In practical engineering cases, the new asphalt pavement marking projects that adopt the TOP ROAD complete solution have shown excellent adhesion performance. Even under heavy traffic and extreme weather conditions, the markings can remain intact without peeling off, and this reliable performance has won wide recognition in the industry.

Construction of new asphalt pavement, adhesion of hot-melt marking, hot-melt marking coating

Professional technical support ensures successful construction

The construction of hot-melt marking on new asphalt pavement is a systematic project that requires professional technical support. TOP ROAD Transportation Technology Co., Ltd. provides customers with a complete set of solutions from timing judgment, surface treatment to coating selection, and construction control, relying on in-depth material research and rich engineering experience. The company’s products not only have excellent adhesion, but also have excellent wear resistance and reflective performance. By choosing TOP ROAD, you will receive technology leading hot melt marking products, professional construction guidance, and comprehensive after-sales service, effectively avoiding various problems in the construction of new asphalt pavement markings, ensuring reliable and long-lasting project quality, and safeguarding road safety.

Our company is a professional manufacturer of road hot-melt coatings, road retroreflective measuring instruments, and road marking machines. If you are interested, please feel free to communicate with me via email at any time export@toproadtraffic.com