NAMIBIA: Rossing Reservoirs

PROJECT DESCRIPTION: 6 reservoirs to upgrade extra water process facility

CEMENT USED: +-5000cub concrete. Ohorongo CEM IR with 30% Fly Ash blend was used

PROJECT ETA: 8 months

AMOUNT OF CEMENT USED:  Estimated 1400 tons of cement with a total of over 5000 cubes of concrete placed. Ohorongo CEM I 42.5R cement was used with a 30% Fly-Ash extension. Fly-ash was added to the concrete to increase the density and reduce permeability as well as cracking of concrete.

RECOMMENDED CONCRETE STRENGTH: 10MPa Blinding & 40MPa Concrete

CONCRETE PLACEMENT: Due to confined space,  distance to cast element and high, all concrete was placed using a mobile pump.

RESERVOIR CAPACITY: Is the complete reservoir made from concrete? What other materials were used? Only the base, main structure was derived from epoxy coated steel.

PROJECT CHALLENGES: Large continuous pours. Pours had to be done over night as to reduce influence of thermal temp changes. Logistics of material was also something that needed continuous planning.

Project details and photos supplied by: Coastal Precast & Paving / Suremix
Project Contractor: K Neumayer Civil Contractors