Acoustic Emission of Biocemented Calcareous Sand Base

A meter-scale model test with microbially induced calcite precipitation (MICP) is an efficient method to validate this sustainable soil reinforcement technique. Mechanical and physical testing methods for evaluating the biocementation efficiency of tests are still being explored. In study, a calcareous sand base was treated MICP. The mechanical characteristics base, such as strength, shear-wave velocity (SWV), acoustic emission (AE) signals, were measured via cone penetration (CPTs), bender element tests, unconfined compression (UCTs), AE tests. CPTs showed that strength increases biotreatment level, maximum could be reached at eight-cycle treatment. heterogeneity within which can reflected by differences in dry density, SWV, segmented specimens. signals from both UCTs avalanche analysis damage involves fracture friction.