报告题目：石基基础材料的化学、微观结构与力学性能的关联研究

Understanding of Relationships among Chemistry, Microstructure, and Mechanical Properties of Stone-based Infrastructure Materials

报 告 人：A/Prof. M.J. Tao Ph.D., P.E., Associate Department Head Worcester Polytechnic Institute, USA

报告时间：2019 年 11 月 26 日上午 9:30

报告地点：宝山校区东区土木楼312会议室

主讲人简介

Mingjiang Tao joined Worcester Polytechnic Institute in 2007, where he is an Associate Professor and Associate Department Head. He is the author of more than 60 papers on alternative cementitious binders, asphlat concrete, granular materials, and characterization of construction materials at nano- and marco-scales. Dr. Tao’s research has been funded by the National Science Foundation, Federal Highway Administration, state departments of transportation, and New England Transportation Consortium. Prof. Tao is a Member of the American Society of Civil Engineers and member of Chemical and Mechanical Stabilization Committee (AFS90), Engineering Behavior of Unsaturated Soils Committee, and Physicochemical and Biological Processes in Soils (AFP40) of the Transportation Research Board, and member of Sigma Xi.

报告简介

In this talk, Prof. Tao will share some results from his research efforts that aim to fill the knowledge gap in the chemical-microstructure-mechanical link of two binding agents: (1) Organic asphalt binder; and (2) Inorganic geopolymer. Their microscopic morphology and mechanical contrast among the multiphase features were evaluated using scanning electronic microscopy (SEM), atomic force microscopy (AFM) and nanoindentation, while their bulk thermal and mechanical properties were investigated with modulated differential scanning calorimetry (MDSC), a dynamic shear rheometer (DSR), and unconfined compressive strength testing, respectively. These findings enhance our understanding of the complicated relationships among chemistry, microstructure, and mechanical properties of binding agents, which would enable us to develop materials with desired properties by tailoring their chemistry.