Doubled strength
Waterborne epoxy resin significantly enhances the mechanical strength of cemented paste backfill by retarding crack propagation, maintaining high bearing capacity even after main crack penetration.
Ouyang, Shenyang · Huang, Yanli · Zhou, Nan · Ming, Li · Li, Xiaotong · Li, Junmeng · Fei, Ke · Yahui, Liu
International Journal of Minerals, Metallurgy and Materials 2023
At mass ratio of polymer to powder material of 0.30, strength of PCPB samples with curing age of 28 d increased by 102.6%
Under uniaxial load, main crack runs through the sample with abundant small cracks around it
AE events are mainly concentrated in plastic deformation stage, with tensile failure dominant