Hemmati Navid, Vigneswaran Shyaamkrishnan, Kim Hyun Hwan, Lee Moon-Sup, Lee Soon-Jae
Texas State University, San Marcos, TX 78666, USA.
Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, Republic of Korea.
Materials (Basel). 2023 Jan 31;16(3):1235. doi: 10.3390/ma16031235.
The study presents an experimental evaluation to improve the resistivity of binders with "Styrene-Butadiene-Styrene" (SBS) and "Processed oil" by studying the physical properties, rheology, and cracking. For this experiment, PG 64-22 was mixed with SBS at different percentages of 5%, 10%, and 15% by weight of the original binder with two processed oil contents of 6% and 12% by weight of the binder. Laboratory tests have been conducted at various high, medium, and low temperature ranges to evaluate their properties. The processed oil polymer modified asphalt (PMA) binder is artificially aged in both the short and long-term using a Rolling Thin Film Oven (RTFO) and a Pressure Aging Vessel (PAV). The Superpave testing method was performed on modified binders using a Rotational Viscometer (RV), Dynamic Shear Rheometer (DSR), and Bending Beam Rheometer (BBR). The results of this study illustrate (1) The addition of SBS leads to higher viscosity, but the co-modification of asphalt binder with the processed oil shows a significant modulation of the viscosity value. (2) In addition, processed oil reduced the resistance to rutting, but the addition of SBS significantly improved the rutting resistance of the asphalt binder. (3) The addition of SBS and processed oil improved the value of G sin , notably. (4) According to BBR, it has been shown that the addition of SBS in addition to the processed oil improves the stiffness values of modified asphalt binders.
该研究通过研究物理性能、流变学和抗裂性，对添加“苯乙烯-丁二烯-苯乙烯”（SBS）和“加工油”的粘结剂的电阻率改善情况进行了实验评估。在本实验中，将PG 64-22与SBS按原始粘结剂重量的5%、10%和15%的不同比例混合，并添加两种含量分别为粘结剂重量6%和12%的加工油。在各种高、中、低温范围内进行了实验室测试，以评估它们的性能。采用旋转薄膜烘箱（RTFO）和压力老化容器（PAV）对加工油聚合物改性沥青（PMA）粘结剂进行短期和长期人工老化。使用旋转粘度计（RV）、动态剪切流变仪（DSR）和弯曲梁流变仪（BBR）对改性粘结剂进行了Superpave测试方法。本研究结果表明：（1）添加SBS会导致粘度升高，但加工油对沥青粘结剂的共改性显示出粘度值的显著调节。（2）此外，加工油降低了抗车辙能力，但添加SBS显著提高了沥青粘结剂的抗车辙能力。（3）添加SBS和加工油显著提高了G sin值。（4）根据BBR测试，结果表明，除加工油外，添加SBS还提高了改性沥青粘结剂的刚度值。
