Drissa Ouattara

• Université du Québec en Abitibi-Témiscamingue

Lithium is a critical element for energy transition, especially in battery manufacturing. Canada is hosting large reserves of lithium as brines and pegmatite hard rocks and has a great potential to be a major lithium producer. The hard nature of the pegmatite ore body, as compared to lithium extracted from brines, is an important reason for the lim...

The addition of superplasticizers or high-range water reducers (HRWRs) to high density cemented paste backfills (CPBs) can improve their rheological behavior and facilitate pumping operations. This study aimed to assess the influence of various mixture parameters, including HRWR type and dosage, binder type and content, as well as tailings characte...

This paper assesses the effects of different types of high-range water reducer (HRWR) on the consistency (slump) and unconfined compressive strength (UCS) of cemented paste backfills (CPB) prepared mainly with tailings T1 at 80% solids mass content (a few tests were also conducted with tailings T2). A blended binder made of 80% ground granulated bl...

The rheological properties of cemented paste backfill (CPB) affect the flow characteristics during transport for underground open stope filling. An experimental study was conducted to investigate the effects of two different types of polycarboxylate (PC)-based high-range water reducer (HRWR) admixtures, or superplasticizers (SP), called PC1 and PC2...