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以中海油绥中70#沥青为基质沥青,苯乙烯-丁二烯嵌段共聚物(SBS)为改性剂,HMD-1为稳定剂,制备了高模量机场沥青,并对工业试生产的高模量机场沥青性能进行了评价。结果表明:当SBS改性剂的加入质量分数为5%,高模量添加剂的加入质量分数为1.5%时,改性沥青各项指标均能满足技术指标要求,其中60℃复数剪切模量可达13.96 kPa,PG等级可达PG 88-22;延度(5℃)为29 cm,薄膜烘箱试验后延度(5℃)达到20 cm,表明机场沥青具有良好的高温稳定性、低温延度及抗老化性能;该产品的20 000次碾压最大变形分别为2.681,2.576 mm,沥青混合料的最大弯拉应变为2 941μm/m,表明该产品具有良好的高温抗车辙性能、水稳定性能及低温抗裂性能。
Taking CNOOC Suizhong 70 # asphalt as base asphalt, styrene-butadiene block copolymer (SBS) as modifier and HMD-1 as stabilizer, high modulus airport asphalt was prepared, and industrial pilot production The asphalt properties of high modulus airport were evaluated. The results show that when the mass fraction of SBS modifier is 5% and the mass fraction of high modulus additive is 1.5%, the indexes of modified asphalt can meet the technical requirements. The complex shear modulus at 60 ℃ Up to 13.96 kPa, PG grade up to PG 88-22, ductility (5 ℃) of 29 cm, post-ductility (5 ℃) of the film oven up to 20 cm, indicating that the airport asphalt has good high temperature stability, Degree and anti-aging performance. The maximum deformation of 20 000 rolling of the product was 2.681,2.576 mm, the maximum bending strain of asphalt mixture was 2 941μm / m, indicating that the product has good high temperature rutting resistance, water stability Performance and low temperature crack resistance.