Ph.D. Student in Civil Engineering
Wei Duan is a Ph.D. candidate in Civil Engineering at the University of South Australia (UniSA) STEM. He holds a Bachelor’s degree in Water Supply and Sewerage Engineering and a Master’s degree in Civil and Environmental Engineering. His research focuses on cementitious materials, alkali-activated materials, and corrosion-related durability.
South Australian Water Corporation (SA Water)
University of South Australia
Prof. Yan Zhuge
My project aims to develop an alkali-activated material (AAM) that incorporates drinking water treatment sludge (DWTS) to create a binder material with superior mechanical performance and greater durability compared to traditional cement-based materials. The production of these AAMs not only reduces waste but also offers an eco-friendly disposal solution for DWTS, a byproduct of water production. The durability of the AAM will be tested for its resistance to alkali-silica reaction (ASR) and acid corrosion, including microbiologically influenced corrosion (MIC).
Participating in industry-led research offers a platform for me to stay close to the ever-evolving needs of various sectors. This direct engagement provides invaluable insights into the latest trends and challenges within industries, allowing me to tailor my academic pursuits to address real-world issues effectively.
The highlights of my PhD include reusing DWTS, a byproduct of the water treatment process, and developing a new AAM with DWTS that exhibits better mechanical performance compared to cement-based materials. It was exciting to see the new AAM’s excellent resistance to alkali-silica reaction, even with highly reactive aggregates. Incorporating DWTS into the precursor of the AAM also enhanced its resistance to acid corrosion, which was a significant breakthrough.
After completing my PhD, I aspire to continue my research within academia. I’m excited about the possibility of furthering my work and contributing to innovative solutions in my field.
My research offers a way to reuse drinking water treatment sludge, reducing disposal costs for the water industry. The newly developed AAM can replace traditional cement, potentially cutting down cement consumption and greenhouse gas emissions. It also boasts improved durability, with excellent resistance to alkali-silica reactions and acid corrosion. Additionally, it can be applied as a coating for existing cement-based products, effectively extending their service life.
