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通过沥青的针入度、延度、软化点3大指标试验以及布氏旋转粘度试验对掺加Sasobit温拌剂的SBS改性沥青指标及粘度进行了试验研究。研究结果表明,Sasobit可以降低沥青针入度、提高软化点,有效改善沥青抗高温性能,但同时也会减小沥青延度,损害沥青的低温抗裂性能;Sasobit可以改善沥青耐老化性能,且在一定范围内其掺量越大,抗老化性能越好;Sasobit可以有效降低沥青高温粘度,改善沥青的高温流动性,且在一定范围内粘度随Sasobit掺量的增加而不断降低,但是降低幅度会逐渐减小,因此,在实际应用中应该确定一个最佳掺量。
Through the asphalt penetration, ductility, softening point 3 large index test and the Brookfield rotational viscosity test SBS modified asphalt mixed with Sasobit temperature mixing agent index and viscosity were studied. The results show that Sasobit can reduce the penetration of asphalt, improve the softening point and effectively improve the high temperature performance of asphalt, but also reduce the ductility of asphalt and damage the low temperature cracking resistance of asphalt. Sasobit can improve the aging resistance of asphalt and In a certain range, the greater the content, the better the anti-aging performance. Sasobit can effectively reduce the high temperature viscosity of asphalt and improve the high temperature fluidity of asphalt, and the viscosity decreases with the increase of Sasobit content within a certain range. However, Will gradually reduce, therefore, in practical applications should determine the best dosage.