Design and treatment of loess bases in Bulgaria

Abstract

Collapsible loess soils occupy 13% of Bulgarian territory and are a serious problem for construction. Loess thickness reaches up to 50 m and the total collapse under conditions of moistening and over-burden pressure may reach up to 170 cm. The Russian classification of loess bases has been adopted in Bulgaria. This distinguishes two types according to the magnitude of the collapse under conditions of moistening and overburden pressure. Mechanisms and remedial measures for both types are discussed. -from Author