From April 18th to 20th, 2025, the 6th National Conference on Solid Waste Treatment and Eco-Materials was held at the Sheraton Hotel in Jiading, Shanghai. Over 1,000 experts and scholars from universities, research institutions, enterprises, and public institutions across China gathered to engage in in-depth exchanges on cutting-edge directions in the field of solid waste resource utilization and eco-materials. Teacher Zhou Qingsong, a faculty member of the School of Civil Engineering and Architecture at Suqian University, was invited to attend and delivered an academic presentation titled "Design Principles and Application of Low-Carbon Calcium Carbonate Concrete Based on the Dual Precipitation Method".

Drawing on his research findings during his doctoral studies at the University of Tokyo, Teacher Zhou systematically introduced the overall concept of the Calcium Carbonate Circulation System for Construction (C4S) and its key role in the low-carbon transformation of building materials. This project, funded by Japan's New Energy and Industrial Technology Development Organization (NEDO) and led by Professor Takafumi Noguchi from the Department of Architecture at the University of Tokyo, aims to efficiently convert calcium elements from construction solid waste into calcium carbonate crystals using the dual precipitation method combined with cold sintering. This approach establishes an integrated pathway for carbon capture and reuse.

In his presentation, Teacher Zhou focused on elucidating the theoretical mechanisms and material evolution processes of the dual precipitation method. He showcased research results demonstrating its effectiveness in enhancing mechanical properties and improving CO₂ sequestration capacity. Data from Teacher Zhou's recent publication in the journal Cement and Concrete Research were cited, earning widespread acclaim from the attending experts. During the conference, Teacher Zhou also engaged in in-depth discussions with scholars from institutions such as The Hong Kong Polytechnic University and Tongji University regarding the research and localized application of related technologies.

This presentation not only highlighted Suqian University's research progress in the fields of construction solid waste resource utilization and eco-materials but also established a solid platform for strengthening international collaboration and promoting the practical application of green building material technologies in the future.