SMA Fiber is a specialized additive used in Stone Mastic Asphalt (SMA) mixtures to improve binder retention and help maintain the stability of the asphalt mixture.
SMA is a gap-graded asphalt mixture characterized by a stone-on-stone skeleton and a relatively high binder content. Because of its composition, suitable stabilizing fibers can help prevent excessive drainage of bitumen from the mixture during production, transportation, and placement.
High-quality SMA fiber can contribute to:
Improved binder retention
Reduced bitumen drainage
Better mixture stability
Improved aggregate-binder interaction
Enhanced durability of SMA mixtures
More consistent asphalt production
SMA fiber is particularly relevant to road pavements exposed to heavy traffic and demanding loading conditions where the performance and durability of the asphalt mixture are critical.
The appropriate fiber type and dosage should be determined according to the aggregate characteristics, binder content, asphalt mixture design, production conditions, and project specifications.
Sepidman Pars provides SMA Fiber for use in Stone Mastic Asphalt applications where improved mixture stability and binder retention are required.