Abstract
AbstractCompaction grouting is widely used for ground improvement, including foundation retrofitting, earthquake disaster mitigation, and settlement compensation. However, until now, it has been developed and used based on an empirical approach and on judgment, rather than on theoretical and analytical methodologies. Estimating the expansion of soils caused by compaction grouting under different depths, soil conditions, and injection pressures is critical to determining the design parameters and construction procedure, as well as to assessing the effectiveness of the ground-improvement measure. Different mechanisms and models are reviewed and evaluated. Graf’s model is among the most appropriate and readily understandable in the view of practitioners; the elastoplastic Mohr-Coulomb constitutive model was deemed appropriate for the finite-element analysis that was conducted in this study. Charts based on the finite-element simulation results of radial expansion and heave in noncohesive soils under differen...
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