Erol Yilmaz, Mostafa Benzazoua
The mechanical performance of cemented paste backfill (CPB) placed in underground openings often differs from laboratory-predicted performance, influenced by specific self-weight consolidation and varying drainage conditions. To address this, the CUAPS (Curing Under Applied Pressure System) was developed at the Université du Québec en Abitibi-Témiscamingue to evaluate the hydro-mechanical performance of in situ CPB samples at a laboratory scale. This apparatus facilitates effective curing of CPB samples under various vertical pressures that simulate in situ conditions. The study investigated the compressive strength of samples from Garpenberg poly-metallic mine (Sweden) using CUAPS and conventional models to analyze mechanical stresses and geotechnical parameters of CPB samples. Results indicated that the compressive strength of consolidated CPB samples significantly exceeded that of unconsolidated ones, likely due to the removal of excess pore water during the curing process, promoting better consolidation. The findings highlight the effectiveness of CUAPS over traditional molds for preliminary and fixed CPB system designs, and account for discrepancies in strength between laboratory and in situ samples.
@article{ec24ffe5-21c3-4c1c-8b4b-ebb7bd041e43,
title={Effect of curing under pressure on compr},
author={Erol Yilmaz and Mostafa Benzazoua},
year={2026},
language={en}
}TY - JOUR TI - Effect of curing under pressure on compr AU - Erol Yilmaz AU - Mostafa Benzazoua PY - 2026 LA - en ER -
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