题  目：Innovative Materials Contributing to Life-Cycle Sustainability of Transportation Infrastructure

     有助于交通基础设施生命周期可持续性的创新材料

时  间：2019年7月5日9：30-11:00

地  点：7号楼学术报告厅

报告人：Xianming Shi  （Director, National Center for Transportation Infrastructure Durability & Life-Extension  Associate Professor, Department of Civil and Environmental Engineering  Washington State University, Pullman, WA, USA）

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欢迎广大师生参加

                                  土木与交通学院

                                  2019年6月27日

报告人简介：

石鲜明，博士，美国交通运输部国家交通基础设施耐久性与养护研究中心主任, 寒区绿色交通研究中心副主任。

华盛顿州立大学土木环境工程系副教授（终身教职），博导。先进可持续水泥类材料实验室主任, 腐蚀科学与电化学工程实验室主任。国际华人基础设施工作者协会（IACIP）理事，美国国家科学院交通运输研究委员会（TRB）混凝土耐久性专业委员会理事, 资源保护与回收专业委员会理事。美国混凝土研究院，腐蚀工程师国际协会，美国纳米协会等多个国际学术团体成员。Journal of Infrastructure Preservation and Resilience主编。International Journal of Transportation Science & Technology 杂志编委。 40多个SCI杂志审稿人。2016交通基础设施和材料国际会议组委会委员，第一届交通研究代表大会(TRC)学术委员会委员，第二届TRC组委员会委员；第七届IACIP年度研讨会组委会主席。中国、美国、加拿大、瑞士及以色列自然科学基金评审专家；美国能源部基金评审专家；ACRP, NCHRP及TCRP专家组成员。

报告摘要：

Recent years have seen increased attention to the life-cycle sustainability of transportation infrastructure, such as that of steel bridges, concrete bridge decks, and asphalt pavements. The introduction of life-cycle perspective into the management of transportation infrastructure provides renewed interests in using innovative materials for enhanced durability and improved performance during the entire life cycle of bridges, tunnels, roads, etc.

For instance, graphene oxide (GO) is a product of chemical oxidation and peeling of graphite platelets. It could be produced to have no more than five layers of carbon atoms and be extended to tens of microns in transverse dimension. The unique physical and chemical characteristics of GO have endowed it a wide range of applications, from medicine, to aerospace, and to civil infrastructures. Due to its excellent reaction characteristics, high specific surface area, and rich surface polar oxygen-containing groups, GO has been demonstrated to effectively modify polymer-based materials (e.g., coatings, resins, and rubbers) and cementitious materials, significantly modifying their engineering performances.

This talk will entail a few recent studies that were focused on the potential applications of GO in building materials, including its use in anti-corrosion epoxy coating, ordinary cement concrete, high-volume fly ash concrete, fly ash based geopolymer concrete, hot mix asphalt, and warm mix asphalt. In addition to the observed improvements in the engineering performance(s) of these materials, the role of GO and the underlying modification mechanisms are briefly discussed.