Composition for manufacturing cement block and manufacturing method of cement block using the same

摘要

PURPOSE: A composition for cement block manufacturing and a manufacturing method of cement block using the same are provided to enhance strength and durability b using lignin generated as by-products of pulp industry. CONSTITUTION: A composition for cement block manufacturing contains cement, kaolin and lignin. The composition additionally contains loess. A manufacturing method of the cement block comprises the following steps: forming a composition by mixing 4-12 parts by weight of kaolin and 0.05-1.0 part by weight of lignin based on 100.0 parts by weight of the cement 100.0; molding the composition by kneading with water; and curing the molded product. The manufacturing method of the cement block additionally includes the following step: After the curing step, a coating agent containing a reflector is spread and forms a reflective layer.