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为研究大温度区间条件下SBS改性沥青混合料的高低温性能,采用埃索70#基质沥青、SBS改性沥青、大温度区间SBS改性沥青进行ATB-25、AC-16、sup-13等3种类型混合料配合比设计,室内成型试件并进行车辙动稳定度、马歇尔稳定度、真空饱水马歇尔残留稳定度、冻融劈裂等试验,对比研究大温度区间条件下SBS改性沥青混合料的高温稳定性及低温抗裂性能。研究表明:同类型沥青混合料配合比条件下,相比埃索70#基质沥青与SBS改性沥青,大温度区间SBS改性沥青混合料试件的马歇尔稳定度、车辙稳定度、真空饱水马歇尔残留稳定度、冻融劈裂强度及非冻融劈裂强度均有较大提高。
In order to study the high and low temperature performance of SBS modified asphalt mixture under large temperature range conditions, ATB-25, AC-16 and sup-13 were carried out by using Esso 70 # matrix asphalt, SBS modified asphalt and large temperature range SBS modified asphalt And other three types of mixture mix design, indoor specimens and rutting dynamic stability, Marshall stability, vacuum saturated Marshall residual stability, freeze-thaw splitting and other tests to compare the large temperature range of SBS modified Asphalt Mixture High Temperature Stability and Low Temperature Crack Resistance. The results show that the Marshall stability, rutting stability, vacuum-saturated water content of SBS modified asphalt mixture specimens in large temperature range compared with those of Esso 70 # matrix asphalt and SBS modified asphalt mixture under the same asphalt mixture ratio Marshall residual stability, freeze-thaw splitting strength and non-freezing-thawing splitting strength are greatly increased.