Chen proposes several engineering solutions to mitigate heave and settlement: Foundations on Expansive Soils: A Review - ResearchGate
If the search for the PDF proves fruitless, these modern resources cover similar ground: foundations on expansive soils chen 1988 pdf
Chen simplified the approach for practitioners by relating heave potential to the swelling pressure. He famously categorized the degree of expansion based on the swelling potential percentage, creating a classification system that is still printed in geotechnical textbooks today: The persistent search for the reflects a genuine
Perhaps the most cited portion of the 1988 PDF is the methodology for predicting the amount of heave ($\Delta H$). While theoretical models existed, Chen offered a practical, semi-empirical approach. No digital file can replace understanding soil suction,
The persistent search for the reflects a genuine professional need. Chen’s book provides validated solutions to a problem that modern software sometimes overcomplicates. However, a PDF scan—legitimate or otherwise—is only as good as the engineer’s ability to interpret it. No digital file can replace understanding soil suction, site investigation, and construction observation.