To accomplish an excellent temperature-controlled concrete, it is essential that the main active ingredients of concrete, the coarse aggregate is pre-cooled prior to mixing with other ingredients. Two totally insulated silos of 3.9 m size and 12 m height were used as secondary storage just before mixing to control the temperature variation. The aggregates were fed into these silos, using a secondary belt conveyor. Therefore, reducing the temperature, chilled water was pumped to the top of the silos using rubber hose pipes. However, the water, after cooling the aggregates, drains through the cone attached at the bottom silo. Meanwhile, after the cooling, the chilled water was recirculated back into the silo. Thus, by this process, the aggregate temperature level was maintained around 20°C to 23°C.