春风塔河优质道路沥青性能研究

对春风塔河优质道路沥青性质、化学组成进行分析，对其PG分级、混合料性能进行评价。结果表明：春风塔河优质道路沥青四组分构成比例较好，针入度指数适中、软化点和动力黏度（60 ℃）高、低温延度大、蜡含量低、残留针入度比和残留低温延度大；PG分级为PG64-28，感温性好，耐热老化性能优良，抗高温变形、低温抗裂及抗疲劳性能良好，低温抗裂性能尤其突出；混合料性能良好，适合在气候变化大的新疆地区应用。

PERFORMANCE EVALUATION OF HIGH QUALITY ROAD ASPHALT FROM CHUNFENG-TAHE CRUDES

The quality and chemical composition of high quality road asphalt of Chunfeng Tahe were analyzed, and its PG grading and mixture performance were evaluated. The results showed that the samples have a good proportion of four components, showing moderate needle penetration index, high softening point and dynamic viscosity (60 ℃), large low temperature elongation, low wax content, large residual needle penetration ratio and residual low temperature elongation. The sample has good performances in temperature sensitivity, heat resistance aging performance, resistance to high temperature deformation, low temperature crack resistance and fatigue resistance, especially at low temperature crack resistance, belonging to PG 64-28 classification and is suitable for application in Xinjiang.