Alternative Binder for Ground Improvement to Reduce Co2 Footprint-Video

Video Transcription

Video Summary

Osman Besla presents a ground-improvement trial on Norway’s SMS2A InterCity railway project, where dry soil mixing was planned for challenging clay, including quick clay. The test field evaluated alternative binders and reduced binder quantities to cut costs and CO₂ emissions. The proposed Multisem blend combines Portland cement with cement kiln dust (CKD). Results showed strong early column strength, with limited additional benefit from increasing binder from 60 to 90 kg/m³. Using a 50% Multisem blend and reducing binder from 90 to 40 kg/m³ lowered estimated emissions from 15,000 to 4,000 tonnes. The trial also highlighted limitations in conventional strength-testing methods.

Keywords

dry soil mixing

quick clay

Multisem binder

ground improvement

CO2 emissions