Coupled thermo-hydro-mechanical-chemical behaviour of cemented paste backfill in column experiments. Part I: Physical, hydraulic and thermal processes and characteristics

► Paste backfill is subjected to coupled thermo-hydro-mechanical-chemical processes. ► High column experiments have been carried out to understand these THMC processes. ► Physical, hydraulic and thermal processes significantly influence CPB behaviour. ► The findings can contribute to a better understanding of CPB behaviour and design.