Asphalt Polime: Why not?

For expressway surface, due to special requirements to ensure safety when vehicles are circulating at high speed, the use of asphalt materials suitable for manufacturing various types of asphalt-coated concrete Large roughness, high durability is essential. Over decades of research, application and improvement, polymer asphalt materials are manufactured by blending asphalt with thermoplastic polymer which has been accepted and widely used in the world with a yield of millions of tons / year.

In the world, for many years, researchers and producers of asphalt have been based on the criteria of asphalt concrete to design products: Increase the road friction to ensure traffic safety when high-speed circulating vehicles; withstand extreme weather conditions (very hot or very cold); withstand heavy loads; not harmful to the environment; capable of regeneration and easy maintenance; ensure economy with acceptable investment costs.

Asphalt manufacturing factory (Photo: VTV)

These polymer-modified asphalt concrete materials can achieve very important physical properties such as not melting at high temperatures, no cracks when the temperature is low, not creating out subsidence caused by fatigue or cracks due to heavy loads . and especially increase the surface roughness and life cycle many times higher.

For highway projects, it is common to use polymer asphalt materials to produce intermittent asphalt concrete mixtures, with large porosity, high abrasion resistance to create coatings. Plastic concrete has great friction.

In Vietnam, the application of high surface roughness test using polymer modified asphalt was started in 1997 (Bac Thang Long - Noi Bai, National Highway 51, French Van 1 Highway). - Cau Gie .) and gave very good results. Through testing and evaluation, polymer asphalt materials were standardized according to 'Polymer asphalt material standard (22TCN319-04)' and 'Process of construction technology and acceptance of thin concrete coatings. plastic has a high roughness (22TCN345-06) '. These are legal documents that help design consultants, investors, and construction contractors apply results to create rough coatings on important national highways and highways.

Factory manufacturing polymer modified bitumen resins has also been built and put into production (Cua Lo, Go Dau .), which may be ready to meet the upcoming demand in highway construction in our country.

Phan Viet Dung