PURPOSE: To make it possible to obtain a body colored uniformly over the entire part by forming waste materials, such as fragments and chips, to a powdery form, adding white cement, water and binder to the powder, kneading the mixture, packing the mixture into a prescribed mold and curing the molding at normal temp. and under normal atm. pressure.

CONSTITUTION: The waste materials C of the fragments generated at the time of cutting ALC concrete A of fixed shapes are gathered and are made into powder form. The ALC concrete powder of the waste crops is used as a raw material. The powder of the waste materials C is then compounded at 4 by the weight of the entire part, the white cement D as the solidifying agent at 1 and the water E at 5 of the same weight as these materials and Metolose F of 1/1000 of the entire part is added as the binder to the mixture. The mixture is then rested at and under ordinary temp. and atm. pressure. As a result, the coloration of the body itself in a production process is made possible and the unequalness in the fixing of the dyestuff even in the case of coloration after the completion of carving is made possible.