Ageing effects on the stiffness behaviour of a microbiologically treated and compacted soil

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Title:	Ageing effects on the stiffness behaviour of a microbiologically treated and compacted soil
Author:	Morales, Laura; Romero Morales, Enrique Edgar; Pineda Jiménez, Jubert Andrés; Garzon, E.; Giménez, Antonio
Other authors:	Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
Abstract:	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).
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls -Clay soils -- Stability -Sòls argilosos -- Estabilitat
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Document type:	Article - Published version Conference Object
Published by:	Springer
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