Views: 136 Author: Sally Lyu Publish Time: 2025-08-15 Origin: Site
SBS (Styrene-Butadiene-Styrene Block Copolymer) Modified Asphalt can significantly improve the pavement performance of asphalt, mainly in the following aspects: enhanced high-temperature stability, low-temperature crack resistance, fatigue resistance, bonding strength, and waterproofing performance, while also reducing asphalt aging.
Specifically, SBS modified asphalt offers the following advantages:
1. Improved high-temperature stability:
SBS polymers form a spatial network structure in asphalt, raising its softening point and rutting resistance at high temperatures. Even in hot climates or under heavy traffic loads, it effectively prevents pavement deformation.
2. Enhanced low-temperature crack resistance:
SBS polymers provide asphalt with better ductility and elasticity at low temperatures, making it less prone to cracking and effectively resisting temperature-shock-induced fractures.
3. Increased fatigue resistance:
SBS modified asphalt has greater elasticity and toughness, enabling it to withstand repeated traffic loads, reducing fatigue-related damage, and extending pavement service life.
4. Improved bonding strength:
The stronger adhesive capacity of SBS modified asphalt enhances the tensile strength of pavement under wet conditions, improving its water stability.
5. Superior waterproofing performance:
SBS modified asphalt can be processed into waterproof membranes or coatings with excellent impermeability, effectively preventing moisture penetration and protecting buildings and structures.
6. Slower aging rate:
SBS modified asphalt reduces UV damage, mitigates the impact of diesel, engine oil, and other chemicals, and thus delays the aging process of asphalt.
In summary, by improving the physical properties and chemical stability of asphalt, SBS modification significantly enhances pavement performance and durability, enabling it to better adapt to complex road-use environments and extend service life.
