建筑材料对高速公路沥青路面耐久性影响的试验研究
发布时间：2018-08-09 14:20
【摘要】：通过添加改性剂TPS对SBS沥青进行改性,研究了高速公路沥青路面的耐久性,浸水马歇尔试验表明,改性沥青浸水残留稳定度要比基质沥青的高,具有较好水稳定性能。175℃拌和温度下,SBS沥青与TPS改性沥青浸水残留稳定度相差较小;190℃拌和温度下,TPS改性沥青混合料的抗水损害性能提高显著。冻融劈裂试验试验表明,TPS改性沥青冻融劈裂强度均高于基质沥青,190℃拌和温度下,TPS沥青试件抗水损害性能提升明显,黏结性良好;浸水飞散试验表明,TPS改性沥青浸水飞散试验和标准飞散试验损失率比较接近。根据试验,TPS掺量选择12.5%,拌和温度选择190℃较为合适。工程实际表明,改性SBS沥青试验路与普通路段的弯沉回复率分别为68.2%和84.0%,说明改性SBS沥青比普通路面具有更强的抵抗变形的能力,冻融稳定性更好。
[Abstract]:The durability of asphalt pavement of expressway was studied by adding modifier TPS to improve the durability of asphalt pavement. The results of immersion Marshall test showed that the stability of modified asphalt was higher than that of base asphalt. The difference between the stability of TPS asphalt and that of TPS modified asphalt at mixing temperature of 175 鈩，
本文编号：2174351
[Abstract]:The durability of asphalt pavement of expressway was studied by adding modifier TPS to improve the durability of asphalt pavement. The results of immersion Marshall test showed that the stability of modified asphalt was higher than that of base asphalt. The difference between the stability of TPS asphalt and that of TPS modified asphalt at mixing temperature of 175 鈩，
本文编号：2174351
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