Characterizing dynamic segregation behavior in cemented paste during pipeline transport through electrical resistance tomography

• Dynamic segregation of cemented paste backfill (CPB) in pipelines was quantified using electrical resistance tomography (ERT), enabling real-time non-invasive monitoring. • CPB conductivity increases with transport time but decreases with higher solid mass content, with solid content exerting a greater influence on segregation. • At low solid content, solid particles migrate to the pipe bottom; this migratory behavior diminishes as solid content increases. • Higher solid mass content amplifies the effect of conveying time on segregation, highlighting the need to balance these factors in pipeline design to minimize wear and blockage risks.