超薄沥青磨耗层是一种有效的高等级公路预防性养护技术。主要研究了材料组成与温度对超薄磨耗层沥青混合料性能的影响。研究结果表明，超薄磨耗层采用 SMA -10沥青混合料和 UTFO -10沥青混合料均具有良好的路用性能，且采用 UTFO-10级配和 SBS 改性沥青时性能表现更优；击实温度和油石比对超薄磨耗层沥青混合料的空隙率具有较大影响，当击实温度为120℃时，沥青混合料最佳油石比需增加约0．5％才能满足设计空隙率要求。%Ultra-Thin Friction Overlay (UTFO)is one of effectively method for the preventative maintenance of highway.The main objectives of this paper were focused on the effect of materials compo-sition and temperature on the performance of UTFO.Test results indicated that the UTFO had good pave-ment performance when SMA-10 and UTFO-10 asphalt mixtures were employed,especially for the asphalt mixture adopted UTFO-10 gradation and SBS modified asphalt.Compaction temperature and asphalt content had major impact to the air void ratio of asphalt mixture.When the compaction temperature was 120 ℃,the optimum asphalt content was increased about 0.5% to meet the requirement of design air void ratio.
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