摘要
针对厂拌热再生混合料常规拌和工艺存在的缺陷提出改进,通过沥青混合料冻融劈裂试验、车辙试验和低温弯曲试验等分析了不同拌和工艺对厂拌热再生混合料体积参数、水稳定性、高温稳定性和低温抗裂性的影响。结果表明,对于较高旧料掺量的厂拌热再生混合料,采用改进拌和工艺能够显著提高其压实性能、水稳定性、高温稳定性和低温抗裂性。
Against defects of normal mixing method, an improved mixing method for central plant hot recycling mixture is proposed. Based on freeze-thaw splitting test, wheel rutting test and low-temper-ature bending tes t, the impact on volumetric property, moisture susceptibility, thermal stability and crack resistance of central plant hot recycling mixture between normal mixing method and improved mixing method are analyzed. Research indicates th a t, for the high RAP percentage central plant hot recycling mixture, using improved mixing method can significantly increase the compactibility, mois-ture susceptibility, thermal stability and crack resistance.
出处
《交通科技》
2017年第2期117-119,共3页
Transportation Science & Technology
关键词
沥青混合料
厂拌热再生
拌和工艺
混合料性能
asphalt mixture
central plant hot recycling
mixing method
mixture performance