Abstract The addition of polymer fibers to cemented paste backfill (CPB) has shown promise in enhancing mechanical properties. although it also introduces changes in rheological characteristics. This study aimed to investigate the influence of different types of polymer fibers. namely virgin commercial polypropylene fiber (CPPF). https://www.bekindtopets.com/special-pick-Grandpa-s-Best-Prairie-Hay-quick-pick/