孙依人

个人信息Personal Information

副教授

硕士生导师

性别:男

毕业院校:大连理工大学

学位:博士

所在单位:交通运输系

学科:道路与铁道工程. 市政工程

办公地点:综合实验4号楼520室

电子邮箱:sunyiren@dlut.edu.cn

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Laboratory performance analysis of high percentage artificial RAP binder with WMA additives

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论文类型:期刊论文

发表时间:2017-08-30

发表刊物:CONSTRUCTION AND BUILDING MATERIALS

收录刊物:SCIE、EI、Scopus

卷号:147

页面范围:58-65

ISSN号:0950-0618

关键字:High percentage artificial RAP binder; WMA additives; Rotational viscometer (RV); Dynamic shear rheometer (DSR); Beam bending rheometer (BBR)

摘要:Warm mix asphalt (WMA) technology particularly involving high percentage of reclaimed asphalt pavement (RAP) has become more commonly used due to its promising advantages in environment, energy cost and workability. This paper focuses on the laboratory performance investigation of recycled binders containing high percentage artificial RAP binder (up to 70%) with incorporation of two types of WMA additives, i.e., polyethylene wax (R) and surfactant (M). The artificial RAP binder was obtained through rolling thin film oven (RTFO) and pressure aging vessel (PAV) aging to ensure its pure source and known properties. The rotational viscometer (RV), dynamic shear rheometer (DSR) and beam bending rheometer (BBR) tests were carried out on the recycled binders. The results indicated that when the percentage of the artificial RAP binder was up to 70%, the performance still satisfied the requirements of the Superpave binder specifications. In addition, both the artificial RAP binder content and the type of WMA additives played an important role in determining the performance of recycled binders with WMA additives. Typically, the WMA additive R and artificial RAP binder could offset the disadvantages of each other in rutting and fatigue resistance respectively. Moreover, most of the test results exhibited obvious linear or exponential trends with the artificial RAP binder content. However, the increase of the artificial RAP binder content had little influence on the BBR test data. (C) 2017 Elsevier Ltd. All rights reserved.