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智慧基础设施新万博代理怎么申请:Advanced Fire-Resistant Materials with Superb Ductility

报告题目:Advanced Fire-Resistant Materials with Superb Ductility

主讲人:Tahar El-Korchi,WPI

报告时间:2018年6月12日(星期二)下午15:00

地点:土木与交通学院 309会议室

专家介绍

    Dr. Tahar El-Korchi is a Professor and Chair of the Civil and Environmental Engineering (CEE) Department. He was also the Interim Head of the Fire Protection Engineering Department at Worcester Polytechnic Institute for the past three years. Dr. El-Korchi is an expert in the areas of Materials, structures, pavement engineering, and resiliency in the built environment. He is author of over 100 publications, 1 textbook on Pavement Engineering and 5 book chapters. He has lead a large number of funded research and educational grants supported by the federal government and industry. Dr. El-Korchi is the founder and co-director of the WPI-Morocco Project Center. The purpose of the WPI global projects is to encourage WPI students to learn the value of collaborative inquiry at the interface of sciences and community.  A successful outcome of this experience is achieved when graduates actively develop experiential, sensitive, and cooperative relationships with their hosts to solve global problems. Dr. El-Korchi is also the founder and co-director of the WPI-Panama project center that supports students to complete IQP-junior level projects at the intersection of science, technology and societal need and MQP-senior capstone design projects in their area of study. The centers host approximately 30 students and faculty for a seven week period working with sponsors such as the Panama Canal Authority, Copa Airlines. The Panama project center is funded in part through the US-National Science Foundation and local support from Panamanian industry and organizations.  Dr. El-Korchi served as the inaugural Co-director of the newly launched WPI-Tsinghua Center for Global Public Safety to promote research, academic exchange, industry engagement and sharing public safety knowledge with underserved global communities in the areas of community resilience, hazard mitigation, fire safety, and safety at the nexus of water-air-food. Dr. El-Korchi was the team project leader for the Solar Decathlon Competition held in Datong China-2013 that involved a three university team including WPI-Ghent University-NYPolytech.  The solar house competition is an award-winning program that challenges collegiate teams to design, build, and operate net-zero solar-powered houses that are cost-effective, energy-efficient, and attractive. Dr. El-Korchi has an appointment as a visiting faculty scholar at Hebei University of Science and Technology in Tianjin, China. Dr. El-Korchi was the recipient of the prestigious Presidential Young Investigator Award from NSF.

报告内容

    Sprayed fire-resistant materials are one of the most widely used passive fire protection methods for steel structures due to their low cost, easy application, and light weight. However, as cementitious materials, current SFRMs are not durable due to a lack of ductility, which leads to cohesive failures under service and dynamic loads. In this study, a new class of high ductility of fiber reinforced SFRM is proposed, and its thermo-mechanical properties are experimentally investigated. The new material possesses ductility as high as 4.7%, orders of magnitude higher than conventional SFRMs. The proposed material first cracking strength is about 0.9 MPa with a density as low as 700 kg/m3, while presenting thermal properties comparable to conventional SFRMs. The apparent thermal conductivity of the material was measured between 0.15 and 0.40 W/mK as a function of exposure temperatures up to 1000oC. While having remarkable ductility, the new SFRM can also be manufactured with a significantly lower cost comparing to previous attempts, as it does not require the use of expensive admixtures. The role of fiber volume fraction in the overall ductility of the lightweight SFRM was also investigated.

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