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选用市政道路现场铣刨废旧沥青混合料,通过室内掺加新鲜沥青和废花生油,优化AC-25C目标级配的最佳油石比。废旧沥青混合料的掺加比例为30%,油石比分别为2.1%、2.5%、2.9%和3.3%(油石比为新鲜沥青占废旧沥青混合料和新添加集料的总重量的比值),废花生油的掺加比例根据老化沥青的恢复效果确定。在最佳油石比下,通过车辙试验和水稳定性试验评价废花生油再生沥青混合料的路用性能。结果表明废花生油的添加能有效恢复废旧沥青混合料的路用性能。
Select the municipal road milling waste asphalt mixture at the scene, through the indoor mixed with fresh asphalt and waste peanut oil, optimizing the AC-25C target level with the best ratio of stone. The ratio of waste asphalt mixture is 30%, the ratio of whetstone is 2.1%, 2.5%, 2.9% and 3.3% respectively (whetstone ratio is the ratio of fresh asphalt to the total weight of waste asphalt mixture and newly added aggregate) The blending ratio of waste peanut oil is determined according to the recovery effect of the aged asphalt. Under the optimal ratio of oil to stone, the road performance of waste peanut oil reclaimed asphalt mixture was evaluated by rutting test and water stability test. The results show that the addition of waste peanut oil can effectively restore the road performance of waste asphalt mixture.