Dr. Qingxu "Bill" Jin

Research Seminar - January 2021

CIES SEMINAR - Qingxu "Bill" Jin

Friday, June 11, 2021
Time: 1:00 pm
Zoom

PRESENTER: Qingxu "bill" jin

post-doc georgia institute of tecnology

Abstract:

Ultra-ductile Cementitious Composites for Next Generation Infrastructure

Resilience and Sustainability

 

The exponential growth in concrete production over the past few decades has negatively impacted the environment, especially as relevant to large carbon emission and energy consumption. In addition, the limitations of concrete’s properties – strong in compression, but can easily crack with bending or stretching stress – causes both safety and durability problems because cracked concrete allows water and aggressive chemicals to penetrate the concrete cover, which triggers the corrosion of embedded steel reinforcement. To overcome these problems, an ultra-ductile fiber-reinforced cement-based composite (FRCC), known as bendable concrete, has been developed. FRCC exhibits an unusual ductile behavior that produces cracks thinner than the human hair and therefore enables the material to undergo a self-healing process. When incorporated with nanomaterials and alternative cementitious materials, FRCC exhibits additional functionalities. This talk will highlight these features of FRCC, together with its multi-functionalities such as high fatigue resistance, self-sensing, and self-cleaning. This talk will further provide examples to demonstrate how this advanced concrete technology could be translated into supporting the next generation of concrete infrastructure.

Bio:

Dr. Jin is a postdoctoral fellow at Georgia Institute of Technology, where he earned his doctoral degree in Civil Engineering in 2019. Prior to his graduation, he was a guest research fellow at the National Institute of Standards and Technology. He obtained his dual master's degrees in Civil Engineering and Natural Resources and Environment from the University of Michigan at Ann Arbor in 2016 and his bachelor’s degree in Structural Engineering from the Hong Kong University of Science and Technology. He is also a licensed professional engineer in Maryland. His research links materials science to structural design and system optimization in the context of creating sustainable, intelligent, and resilient infrastructures that are capable of withstanding deterioration related to loading, environment, and hazards.