COOLING METHOD FOR CONCRETE MATERIAL

摘要

PURPOSE:To maintain stabilized water feeding ratio by cooling water for kneading through a refrigerant carrier gas heat exchange type water cooling device and cooling aggregates by refrigerant carrier gas when cement and aggregates are kneaded with the water for kneading. CONSTITUTION:A water cooling device 10 is constituted of a coil-shaped gas pipe 12 installed inside a storage tank 11 storing water 8 for kneading, and the water 8 for kneading in the storage tank 11 is cooled by absorbing vaporation heat from the water 8 for kneading in the storage tank 11 when liquefied refrigerant gas 15 is flowed through a gas pipe 12. The refrigerant gas 15a having absorbing vaporation heat passes through a refrigerant gas duct 17 and enters from a gas inlet formed at the bottom of an aggregate container 4 into the aggregate container 4 to cool the aggregates 5. Thus, a given quantity of cooled aggregates 5 and a given volume of water 8 for kneading and cement of given quantity are put into a concrete mixer 20 and kneaded.