Laboratory Experiments of Water Evaporation from High Plasticity Clayey Soil to Investigate Cracking Behavior

Md Jobair Bin Alam, Aaliyha Jae Fuller, & Naima Rahman. "Laboratory Experiments of Water Evaporation from High Plasticity Clayey Soil to Investigate Cracking Behavior." Geotechnical Frontiers 2025. https://doi.org/10.1061/9780784486016.050 Author F. N. Rahman contributed to the creation and design of this poster for educational/outreach purposes. This study investigates how the evaporation of water influences desiccation cracking in highly plastic clayey soils through controlled laboratory testing. Three initial compaction moisture contents—16%, 20%, and 24%—were examined under a consistent high temperature of 100°F. The findings reveal that higher initial moisture levels prolong evaporation but also result in more severe cracking. The widest crack observed measured 7 mm in the soil compacted at 24% moisture. Final crack patterns were quantified using image analysis software. These results provide essential insights for geotechnical engineering applications, such as embankments, landfills, and dams, where desiccation cracking in fine-grained soils can compromise structural integrity. By understanding the relationship between moisture content, evaporation rate, and crack formation, engineers can develop more effective soil compaction strategies and better anticipate potential failure risks in infrastructure projects.