Difficulties and solutions in the construction of hot-melt road markings on cement pavement

Due to its rigidity and surface characteristics, cement pavement imposes higher requirements on the construction of road markings – problems such as insufficient adhesion and easy foaming and cracking occur frequently, directly affecting the service life and driving safety of road markings. TOP ROAD Transportation Technology Co., Ltd. has been deeply involved in the field of road marking for 30 years. We have developed specialized hot-melt marking coatings and supporting processes for cement pavements, using scientific solutions to solve construction problems and help engineering teams efficiently deliver high-quality projects.

1、 The particularity of cement pavement: the root of construction challenges

There are essential differences between cement pavement and asphalt pavement:

Porous water absorption characteristics: The cement base has a high porosity, which easily absorbs the resin components of the coating and weakens the adhesion;

Difference in thermal expansion coefficient: Cement and coating have different shrinkage rates, and are prone to peeling when there is a large temperature difference;

Surface floating ash problem: residual release agent on newly paved road surface, sanding and dust on old road surface, hindering bonding.

TOP ROAD Solution: Specialized anti cracking hot melt formula+permeable base adhesive, achieves a “combination of rigidity and flexibility” bonding effect by enhancing resin ductility and base penetration.

2、 Before construction: Base surface treatment determines success or failure

Cleaning and decontamination: Use high-pressure water gun to rinse and remove floating dust and oil stains, with a focus on handling residual debris in expansion joints; Oil contaminated areas need to be baked with a gun and polished to avoid the formation of an isolation layer.

Humidity control: The moisture content of the base surface needs to be tested during construction after rain (simple method: laying plastic film for 24 hours without water vapor); Use TOP ROAD quick drying primer in humid environments to shorten maintenance time.

Defect repair: If the crack width exceeds 3mm, it needs to be filled with sealant to avoid thermal expansion and contraction cracking after the coating penetrates; The locally sanding area is reinforced with epoxy mortar to enhance the overall integrity of the base surface.

3、 During construction: precise coordination of temperature and process

Coating melting control: The material temperature is 10-15 ℃ lower than that of asphalt pavement to prevent the high temperature from exacerbating the vaporization and foaming of water on the cement base surface; San Aisi anti cracking formula adds flexible modifiers to ensure low-temperature fluidity.

Key to Bottom Glue Coating: Select a high permeability cement specific bottom glue, increase the coating amount by 20%, and ensure the filling of micro pores on the base surface; After coating, it needs to be left to stand until a transparent film is formed (touch dry and non stick to hands) to avoid vaporization of the interlayer.

Innovation in Glass Bead Spreading: Cement pavement has higher reflective requirements, adopting a dual spreading process (pre mixing+surface spreading); The particle size of the glass beads on the surface has been increased to 0.8-1.2mm, enhancing the durability of reflection on rainy nights.

4、 After construction: scientific standards for maintenance and acceptance

Differentiated period management: During the high temperature period in summer, the open traffic hours will be extended by 50% to avoid uncured markings being stuck by the wheels;

Winter low temperature environment: Cover with insulation film to slow down the cooling rate and prevent sudden cold cracking.

Adhesion test: grid cut method for detection, with no complete detachment at the edge;

Reflective balance: There are no intermittent dark areas in the night driving perspective;

Anti slip value guarantee: tested with a pendulum friction tester to eliminate the risk of slipping in rainy and foggy weather.

Three advantages of choosing TOP ROAD Transportation Technology Co., Ltd

Specialized material research: Developing anti cracking hot melt formula and penetrating primer for cement pavement, overcoming the industry’s adhesion problems;

Full chain empowerment: From surface inspection to construction supervision, the engineering team provides one-stop support for “on-site diagnosis – customized solutions – process calibration”;

Emergency support: Four major production bases and 11 warehousing centers across the country, ensuring a 4-hour response time for emergency replenishment and a 2-hour remote consultation time for construction failures.

For thirty years, TOP ROAD has been deeply involved in the field of road marking coatings. With the core concept of “carrying the road with sincerity and achieving a win-win future,” TOP ROAD has transformed the technological high ground of cement road marking into the cornerstone of safe traffic. Choosing us means choosing to safeguard the lifecycle of every inch of the road with scientific technology.

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