Viscosity and Strength Properties of Cemented Tailings Backfill with Fly Ash and Its Strength Predicted

It is of great significance to study the effect solid contents (SC), binder-to-tailings (b/t) ratio, types and dosage fly ash (FA) on viscosity (V) uniaxial compressive strength (UCS) backfill. can improve filling efficiency reduce costs understand relationship between SC, b/t FA viscosity, UCS Consequently, this paper carried out compression tests rheological five different backfill specimens. Experimental results indicate that, with increase all samples increases as a power function. With decrease decreases an exponential The coupling SC ratio has influence samples. quadratic polynomial order slurry is: pure tailings < mixed Ordinary Portland Cement (OPC) FA1 FA2. higher dosage, greater viscosity. OPC > smaller UCS. increased curing time (CT). relations present positively linear functions. feasible use predict backfill, error predicted value test mostly controlled within 10%. Ultimately, findings experimental work will provide scientific reference for mine design