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本文选用4种基质沥青进行改性,通过对改性前后的技术指标进行测试,分析了改性后性能变化的机理,得到了SBS改性沥青性质随改性剂剂量变化规律,提出了工程中如何优选改性沥青以及改性剂合理剂量的方法。为保证改性沥青的性能质量,确定了改性沥青若干质量项控制指标。对工程实践中使用的改性沥青的经济性进行了分析,提出了施工现场改性沥青质量监控方法,对工程造价以及施工质量控制有重要的指导意义。
In this paper, four kinds of matrix asphalt were selected for modification. The technical indexes before and after the modification were tested, and the mechanism of the performance after the modification was analyzed. The properties of SBS modified asphalt with the dosage of the modifier were obtained, How to optimize the modified asphalt and the modifier reasonable dosage method. In order to ensure the performance and quality of modified asphalt, some quality control indexes of modified asphalt were determined. The economy of modified asphalt used in engineering practice is analyzed, and the method of monitoring the quality of modified asphalt at construction site is proposed, which has important guiding significance for project cost control and construction quality control.