Compressive strength and microstructure evolution of lime-treated silty soil subjected to kneading action

Long-term improvement in behaviour of soil subjected to lime treatment depends on the mechanism its implementation. In-situ lime-treated fine-grained is often ‘kneading action’ developed by Pad-foot roller. The underlying effect kneading remains less investigated. Unconfined Compressive Strength (UCS) and microstructural modification compaction are evaluated. Kneading action undergoes better lime-dispersion during compaction. This feature accompanied with available water favours long-term pozzolanic-reactions hence enhanced UCS evolution, particularly kneaded compacted at Wet Moisture Content (WMC). Lime-treated WMC, which slightly higher than Optimum (OMC) beneficial for evolution specimens longer accelerated curing. laboratory accelerated-cured a similar level as average measured in-situ 7 years atmospherically cured soil.