SMA asphalt pavement utilizes a unique formula featuring high asphalt dosage and fiber stabilizers to create a perfect combination of a coarse aggregate skeleton and asphalt mastic, offering both high-temperature rutting resistance and low-temperature crack resistance. Construction requires precise control of transportation and paving processes to ensure quality.

About SMA Asphalt Pavement
SMA (Stone Matrix Asphalt, or SMA) asphalt pavement demonstrates excellent performance in road construction due to its unique mixture composition and structural characteristics. Its key ingredients include a high asphalt dosage, fiber stabilizers, rich mineral fines, a high content of coarse aggregate, and an appropriate amount of fine aggregate. These ingredients together form a discontinuously graded coarse aggregate skeleton, with asphalt mastic filling the gaps, creating a stable asphalt mixture.
This pavement structure not only exhibits excellent high-temperature rutting resistance under high temperatures and heavy loads, but also significantly improves low-temperature deformation performance and water stability due to the binding effect of asphalt mastic. Furthermore, the addition of fiber stabilizers maintains a high viscosity in the asphalt binder, ensuring excellent paving and compaction results. The Importance of Construction
At the SMA construction site, meticulous control is essential, directly impacting the quality and performance of the final pavement. During construction, ensure that the material mix and construction techniques meet standards.
Key Construction Points and Quality Control
1. Transportation and Paving Key Points
Due to the high viscosity of SMA asphalt mastic, an appropriate amount of oil-water mixture must be applied to the bottom of the truck during transportation to prevent the mixture from sticking. To prevent the mixture from hardening on the surface, a tarpaulin must be used during transportation, and the number of trucks should be increased as appropriate.