COMBINED ASPHALT CONCRETE MIXTURE SMA-MA FOR BRIDGE STRUCTURES
DOI:
https://doi.org/10.71031/qhsi.2025.v1.i4.004Keywords:
stone mastic asphalt, SMA-MA, bridge structures, asphalt concrete, Viatop, Viatop plus FEP, deformations, crack resistance, rutting.Abstract
The article examines an innovative combined asphalt mixture SMA-MA designed for use on bridge structures. The relevance of the study is associated with the need to increase the durability of pavement structures, as well as resistance to plastic deformation, water saturation, and fatigue cracking. The aim of the work is to evaluate the effectiveness of SMA-MA compared to traditional mastic, dense, and stone mastic asphalt mixtures. Laboratory testing methods are presented, including the determination of air void content, resistance to binder drainage, rut depth, and fatigue characteristics. SMA-MA 11 mixtures modified with Viatop 66 and Viatop Plus FEP additives were investigated. The results show that the SMA-MA mixture with multifunctional additives demonstrates improved rutting resistance (up to 12 %) and fatigue performance (up to 15 %) compared to traditional mixtures. The practical significance lies in the potential use of SMA-MA in bridge pavements to increase the service life of structures and reduce maintenance costs.
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References
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