Loess soils: distribution, collapsibility, and remediation




Loess soils: distribution, collapsibility, and remediation


Soil collapse forms a major hazard in large parts of Canada, the United States, Europe, Asia, and Africa, especially in the Loess Plateau of China.Loess soils are typically unsaturated and susceptible to collapse (i.e. sudden decrease in soil volume) upon wetting. Despite these threats and the large body of research available on this subject, there is still a poor understanding of the process of softening/weakening and the collapse mechanism of certain bonds in some collapse elements. This research study aims to provide a comprehensive review of the different types of collapsible soils (loess), origin, distribution, occurrence, structure of collapsible soils (loess), laboratory methods of predicting and measuring their potential to collapse, and remediation measures. It investigates also the feasibility and efficiency of treating collapsible soils with a great variety of stabilization materials. This understanding is crucial for the geotechnical characterization of these types of soils to design safe and economic infrastructures with their longterm serviceability.
 



Brahim Lafifi; A. Rouaiguia; Mouloud Belachia


18th African Regional Conference on Soil Mechanics and Geotechnical Engineering (ARCSMGE2024)



Soil characterization