期刊
ROAD MATERIALS AND PAVEMENT DESIGN
卷 22, 期 5, 页码 1093-1116出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/14680629.2019.1663244
关键词
degree of binder activity; reclaimed asphalt; indirect tensile test; ageing binders
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico - CNPq/Brazil [200279/2014-9]
- Italian Ministry of University and Research [MIUR] [372 08/05/18]
Using reclaimed asphalt (RA) in new asphalt mixtures can save money and resources, but limitations exist due to specifications and technical constraints. Analysis of aged RA binder is necessary to accurately determine requirements for virgin binders and additives, as well as quantify the blending degree between RA binder and virgin binder.
Using Reclaimed Asphalt (RA) in new asphalt mixtures can reduce the amount of new material required thereby saving money and natural resources. In addition, asphalt mixtures with RA have shown comparable properties and performance to that generally associated with asphalt mixtures made with 100% virgin material. However, RA content in pavement surface layers is still limited due to specification and technical limitations. For higher contents, the aged RA binder must be analysed to accurately determine the requirements for virgin binders and additives while the degree of blending (DOB) between the RA binder and the virgin binder also needs to be quantified. This is not a simple process and generally designers assume one of two opposing theories associated with 100% (full blending) or 0% (Black Rock) DOB. This paper proposes a new approach to estimate a unique property of the RA known as the Degree of Binder Activity (DoA) as a function of the processing temperatures of the RA. The study showed positive results and indicated that this DoA approach can be used as a tool to better understand RA in order to improve the binder/blend design for recycled asphalt mixtures.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据