关于举办布伦瑞克工业大学Cannone Falchetto Augusto博士学术讲座的通知
发布时间: 2018-10-11

  目:沥青混合料低温尺寸效应的研究

  间:2018101514301630

  点:交通大楼410会议室

报告人:Cannone Falchetto Augusto博士(布伦瑞克工业大学)

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                                                            土木与交通学院

                                                                   20181011

 

报告人简介:

Cannone Falchetto Augusto,男,博士,助理教授。2011年毕业于意大利帕尔马大学,获博士学位,2013年毕业于美国明尼苏达大学,获博士学位。20088-20131月留于美国美国明尼苏达大学(土木工程与道路材料系)研究生助教以及研究生助理。20137-20176月,在德国布伦瑞克大学工业大学担任研究助理;20174-目前,在布伦瑞克大学工业大学担任助理教授,主要执教土木工程和路面混凝土等等课程。

Cannone Falchetto Augusto凭借扎实的科研基础知识以及丰富的科研成果,2012年获得明尼苏达大学的Matthew J. Huber 奖、2013年获得Road Materials and Pavement Design的最佳论文奖、2015年获得European Asphalt Pavement Association (EATA)的最佳论文奖和2017年获得International Society of Asphalt Pavements (ISAP)的优秀论文奖。与此同时他于2014年成为沥青摊铺技术协会(AAPT)协会会员、RILEM沥青混凝土化学 -力学表征技术委员会成员和国际沥青路面学会会员;而2016年成为了ASCE工程力学委员会成员;在2017RILEM沥青路面再生技术委员会任务组的组长以及TRB AFK20沥青粘合剂特性委员会成员,一直紧贴本专业方向的研究热点和新方向。

主要研究方向包括路面管理养护技术、沥青混合料动态力学响应、沥青混合料级配理论、沥青混合料内部结构分析、粘弹力学有限元模拟等,近年来主要致力于研究自己的主持的项目Preliminary Investigation on Size Effect in Asphalt Mixture - ISBS

报告摘要:

Low temperature cracking is a serious distress for asphalt pavement built in cold regions. Therefore, accurate assessment of strength and fracture properties of asphalt mixtures is fundamental for ensuring the long term integrity of the entire pavement structure. It has been shown that asphalt mixtures behave in a quasibrittle manner at low temperatures and, consequently, its nominal strength strongly depends on the structure size. Most of the research performed in the past has experimentally addressed this phenomenon either on unnotched or deep-notched specimens corresponding to Type I and Type II size effect, respectively. However, the evolution of the pavement conditions during the service life can lead to the formation and propagation of cracks which strongly affect the response of the material and, eventually, determine a complex size effect. In this research a comprehensive experimental study is presented to evaluate the effect of notch depth and shape on the scaling law for quasibrittle fracture. Three-point bending tests are performed on plain and notched asphalt mixture beams of different sizes at low temperature. The results on unnotched specimens are analyzed through the Type I energetic-statistical size effect law (SEL) in combination with the Weakest Link Model, while, in the case of deep notched specimens, the Type II SEL is used. A significant variation in the evolution of the SEL is observed with a dramatic decrease in strength over size and notch depth.