详情

Asphalt Mixtures with Crumb Rubber Modifier for Longevity and Environment

项目名称：	Asphalt Mixtures with Crumb Rubber Modifier for Longevity and Environment
摘要：	The main research plan is to study new materials that will make some positive changes in the durability and longevity of the life of transportation infrastructure, e.g., new asphalt mixtures with Crumb Rubber Modifier (CRM). CRM is recycled rubber produced from waste scrap tires, and when it is incorporated into paving asphalt mixtures, CRM provides many positive improvements in deformation resistance, fatigue resistance and noise reduction Encouraged by successful laboratory study results, CRM became one of the popular materials to modify the properties of conventional asphalt paving materials for pavement longevity, e.g., No-agitation Tire Rubber Modified Bitumen (TR-MB). Since there are 1 billion tires stockpiled and 300 million annual increments of tires generated per year in the United States, CRM also could be the potential solution for the solid waste problem. TR-MB is quite a new technology leading to bituminous binders, such as polymer-modified bitumen, in terms of both rheology and required efforts during paving operations. Their manufacturing is strongly dependent on the selected processing variables as well as on the selected materials. This research will include studying the influence of processing conditions on the modification process, storage stability and overall properties of the final bitumen-tire rubber blends. The objectives of this project are to: (1) Investigate the benefits of the crumb rubber modifier (CRM) for pavement longevity; (2) Study the effects of increasing CRM contents on permanent deformation, fatigue cracking, skid resistance and roughness; (3) Decrease the demand of pure bitumen and to use eco-friendly materials; (4) Develop appropriate mix designs for asphalt mixtures with CRM as modifier, which provides maximum positive impacts on reducing rutting and cracking; and, (5) Promote the maximum and optimal use of CRM in the asphalt pavement.
状态：	Active
资金：	249367
资助组织：	Office of the Assistant Secretary for Research and Technology
管理组织：	Office of the Assistant Secretary for Research and Technology
项目负责人：	Dunn, Denise E
执行机构：	University of Rhode Island, Kingston
主要研究人员：	Veyera, George E
开始时间：	20180701
预计完成日期：	20210630
实际结束时间：	0