加工油对沥青结合料性能的影响。

Effect of Processed Oil on Asphalt Binder Properties.

作者信息

Hemmati Navid, Yun Jihyeon, Kim Hyunhwan, Lee Moon-Sup, Lee Soon-Jae

机构信息

Department of Engineering Technology, Texas State University, San Marcos, TX 78666, USA.

Korea Institute of Civil Engineering and Building Technology, Goyang 10223, Korea.

出版信息

Materials (Basel). 2022 May 24;15(11):3739. doi: 10.3390/ma15113739.

DOI:10.3390/ma15113739

PMID:35683038

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9181782/

Abstract

This study investigates the effectiveness of processed oil in the modification of PG 64-22 and PG 76-22 by assessing their physical and rheological properties, and multiple comparison was conducted between the two binders. The base binders PG 64-22 and PG 76-22 were blended with processed oil at four different percentages of contents (3%, 6%, 9% and 12% by the weight of the binder) and compared with the control binder in each test. The base and modified binders were artificially short-term and long-term aged using a rolling thin film oven (RTFO) and pressure aging vessel (PAV) procedures. Superpave binder tests were performed on the modified binders by applying a rotational viscometer (RV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR). The comparisons and results presented in this study indicate that (1) the processed oil has a significant effect on the binders' viscosity, which changes with respect to the increment of processed oil content. The viscosity of both modified binders decreased with the addition of 3, 6, 9 and 12% processed oil; (2) the performed DSR test showed that the addition of processed oil had a negative effect on the rutting resistance for both binders, since in PG 64-22, G*/Sin values decreased by 55, 65, 75 and 83% with the addition of 3, 6, 9 and 12% processed oil, respectively, while a decrement of G*/Sin of 24, 45, 58 and 65% with the addition of 3, 6, 9 and 12% processed oil was observed in PG 76-22; meanwhile, the fatigue cracking performance was improved and was found to be effective, while G* Sin in PG76-22 decreased by 9, 30, 36, and 52% and in PG 64-22 by 27, 44, 53, and 67% with the addition of 3, 6, 9 and 12% processed oil; (3) the results from the BBR test indicate significant improvement in the thermal cracking properties of the binders. The addition of 3, 6, 9 and 12% processed oil resulted in a decrease in the stiffness of both the PG 64-22 and PG 76-22 binders, with a positive effect consequently being observed on the m-values of the binders.

摘要

本研究通过评估PG 64 - 22和PG 76 - 22的物理和流变性能，研究了加工油对其改性的有效性，并对这两种粘结剂进行了多重比较。将基础粘结剂PG 64 - 22和PG 76 - 22与加工油按四种不同含量百分比（占粘结剂重量的3%、6%、9%和12%）进行混合，并在每次测试中与对照粘结剂进行比较。基础粘结剂和改性粘结剂采用旋转薄膜烘箱（RTFO）和压力老化容器（PAV）程序进行人工短期和长期老化。通过使用旋转粘度计（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Superpave粘结剂试验。本研究给出的比较结果表明：（1）加工油对粘结剂的粘度有显著影响，粘度随加工油含量的增加而变化。两种改性粘结剂的粘度均随添加3%、6%、9%和12%的加工油而降低；（2）进行的DSR试验表明，添加加工油对两种粘结剂的抗车辙性能有负面影响，因为在PG 64 - 22中，随着添加3%、6%、9%和12%的加工油，G*/Sin值分别降低了55%、65%、75%和83%，而在PG 76 - 22中，随着添加3%、6%、9%和12%的加工油，G*/Sin值降低了24%、45%、58%和65%；同时，疲劳开裂性能得到改善且被发现是有效的，随着添加3%、6%、9%和12%的加工油，PG76 - 22中的G* Sin值降低了9%、30%、36%和52%，PG 64 - 22中的G* Sin值降低了27%、44%、53%和67%；（3）BBR试验结果表明粘结剂的热裂性能有显著改善。添加3%、6%、9%和12%的加工油导致PG 64 - 22和PG 76 - 22粘结剂的刚度降低，从而对粘结剂的m值产生了积极影响。