Comparison of mechanical properties of cement treated soils produced by deep mixing and jet grouting methods at same site

Typical techniques used to make soil-cement columns for quay wall structures include the DM (mechanical mixing) and jet grouting methods. In this study, borehole samples were taken from sites where both the DM method and jet grouting method were applied, and mechanical tests such as unconfined compression tests and flexural tests were conducted to investigate the differences in strength development between the two methods on the same soil type. The results showed that both methods achieved sufficient improvement effects; however, when comparing the two, the DM method tended to exhibit less variability in strength.