摘要
针对新疆地区极端气候条件,优化SBS玄武岩纤维复合改性沥青的性能。选用克拉玛依K-90沥青和塔河90#A沥青为基质,结合非充油型SBS4303改性剂和玄武岩短切纤维,通过Box-Behnken响应面设计和回归分析,评估各成分比例对沥青性能的影响。结果表明,SBS显著改善了沥青的弹性和低温性能,玄武岩纤维增强了高温稳定性和抗裂性。优化后的配比使沥青在低温下的延度最大提高119%,软化点提升12.8℃,并表现出优异的抗老化特性,为新疆地区道路建设提供了可靠的技术支持。
This study aims to optimize the performance of SBS basalt fiber composite modified asphalt to address the extreme climate conditions in the Xinjiang region.Karamay K-90 asphalt and Tarim 90#A asphalt were selected as base materials,combined with non-oiled SBS4303 modifier and basalt chopped fibers.The impact of each component's proportion on asphalt performance was evaluated using Box-Behnken response surface design and regression analysis.The results showed that SBS significantly improved the elasticity and low-temperature performance of the asphalt,while basalt fibers enhanced high-temperature stability and crack resistance.The optimized mix ratio increased the ductility of the asphalt at low temperatures by up to 119%,raised the softening point by 12.8℃,and demonstrated excellent anti-aging properties,providing reliable technical support for road construction in the Xinjiang region.
作者
蒲超
刘康宁
张俊
Pu Chao;Liu Kangning;Zhang Jun(Xinjiang Transportation Planning,Survey and Design Institute,Urumqi 830000,China)
出处
《青海交通科技》
2024年第3期128-134,共7页
Qinghai Transportation Science and Technology
