Ageing effects on the stiffness behaviour of a microbiologically treated and compacted soil
Document typeConference report
Rights accessRestricted access - publisher's policy
The paper describes an experimental study aimed at evaluating the evolution of some mechanical properties, specifically small-strain stiffness and unconfined compressive strength, induced by ageing after a microbiological treatment on a compacted soil. Bacillaceae microorganisms were used to induce microbial calcium carbonate precipitation and improve the mechanical properties of a compacted clayey silt. After compaction, samples were left to age and soil stiffness tracked every 24 hours using shear wave velocity measurements (bender elements). Parallel tests were run to determine the unconfined compressive strength at different elapsed times (just after compaction, 2, 4 and 7 days).
CitationMorales, L. [et al.]. Ageing effects on the stiffness behaviour of a microbiologically treated and compacted soil. A: European Conference on Unsaturated Soils. "Unsaturated Soils: Research and Aplications". Napoles: Springer, 2012, p. 371-376.