COATING APPARATUS AND METHOD OF PREVENTING WATER ABSORPTION INTO LIGHT WEIGHT AGGREGATE

摘要

PURPOSE: A coating apparatus for blocking lightweight aggregate absorption and a method thereof are provided to prevent water absorption inside pores of the lightweight aggregate by heating and spraying a mixture of resin monomer and initiator using pressure absorption inhibitor in order to coat and dry a surface of the lightweight aggregate. CONSTITUTION: A coating apparatus for blocking lightweight aggregate absorption(1) comprises a drum mixer(20) which is rotatable in order to mix the lightweight aggregate evenly, a heat exchanger(40) which heats and supplies a pressurized absorption inhibitor from one end of the drum mixer to the light weight aggregate, and a hot air generator(50) which supplies hot-air from other end part of the drum mixer to inside the drum mixer. The pressurized absorption inhibitor is a mixture of resin monomers and reactive initiators. The heat exchanger comprises a plurality of paths for supplying resin monomers and reactive initiators respectively and a spray nozzle(43) which sprays the mixture of resin monomers and reactive initiators inside the drum mixer.