Curing Tank : The tank has been designed to accommodate 150 mm/70.6 mm cube moulds upto 36/72 cube moulds and fully insulated, complete with a hinged lid, heater, thermostat and re-circulated pump. Provision of two removable racks allowing free circulation of water around each mould. The pump, drain valves and electrical equipment are housed in a compartment located at one end of the tank. The tank is heated by a immersion heater under normal conditions and refrigeration system for grey cement, the temperature is controlled at 35°C or