Role of diatom microfossils on geotechnical behaviour of cohesive soil at various normal pressures

摘要

Influences of diatom microfossils on geotechnical behaviour of cohesive soils subjected to various crushing normal pressures have been investigated. The study shows that application of crushing normal pressure causes a significant decrease in compressibility and also a decrease in friction angle of diatomaceous soils. Gradual breakage of microfossil skeletons is responsible for the change in the geotechnical behaviour of such soils when subjected to large normal pressure.