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通过常规的技术指标以及流变学的研究手段,全面评价了岩沥青的高温性能,试验结果表明,岩沥青掺量越大,混合沥青的热稳定性越高、耐久性越好。通过普通沥青混合料、岩沥青混合料、SBS改性沥青混合料高温性能的对比性研究,明确了布敦岩沥青对混合料高温抗车辙能力的贡献,并通过广韶扩建工程予以验证。
Through the conventional technical indicators and rheological research methods, the high temperature performance of rock asphalt is comprehensively evaluated. The results show that the greater the rock asphalt content, the higher the thermal stability of the mixed asphalt, the better the durability. Through the comparative study of the high temperature performance of ordinary asphalt mixture, rock asphalt mixture and SBS modified asphalt mixture, the contribution of Boudun rock asphalt to the high temperature rutting resistance of mixture was clarified and verified by Guangshao expansion project.