Evaluating the mechanical performance of Very Thin Asphalt Overlay (VTAO) as a sustainable rehabilitation strategy in urban pavements
作者： M. Sol-Sánchez , G. García-Travé , P. Ayar , F. Moreno-Navarro , M. C. Rubio-Gámez
关键词: Overlay 、 Permeability (earth sciences) 、 Cracking 、 Engineering 、 Wear resistance 、 Durability 、 Forensic engineering 、 Seal (mechanical) 、 Asphalt 、 Skid (automobile) 、 Geotechnical engineering
摘要: Very Thin Asphalt Overlay (VTAO) has been introduced as an alternative to traditional thick overlays, seal coats, and micro-surfacings. Nonetheless, there are some challenges that still remain regarding the application of VTAOs (such mixture type, cohesiveness, wear resistance, cracking durability), particularly in heavy traffic urban areas. Therefore, this paper presents extensive comparative evaluation mechanical performance, durability safety issues (cohesiveness, adhesiveness, ageing, cracking, plastic deformation, permeability, macrotexture, skid fuel resistance) a VTAO (20 mm thick) high performance BBTM 11B (35 thick), commonly used open-graded for pavement overlays. The results demonstrated is appropriate material pavements it provides good resistance propagation defects. further studies required improve its behavior under distresses related deformations properties.
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