Soil desiccation cracking: phenomenon and mechanism
The formation of desiccation cracks on soil surface due to loss of water is a common natural phenomenon, which can significantly affect the soil performance in various geotechnical, agricultural and environmental applications. In this seminar, Prof. Tang will share insights from his research on the phenomena and mechanisms behind soil desiccation cracking. The presentation will commence by outlining the experimental methods, monitoring tools, and analytical approaches employed in studying soil cracks. The subsequent segment of the presentation will explore the evolution patterns and formation mechanisms of soil cracking. The emphasis will be put on the interconnected processes of evaporation, shrinkage, and cracking, with a focus on the impact of suction and tensile strength on crack formation. The presentation will be concluded by showcasing a series of innovative technologies devised by Prof. Tang's research group for the prevention and control of soil cracking, including fiber reinforcement, eco-polymer crack curing, and microbial mineralization cracking control techniques. Prof. Tang will provide insights into the practical application and widespread utilization of these techniques in various engineering projects.