Decorative concrete block

摘要

PROBLEM TO BE SOLVED: To provide a method for improving color-developing properties and surface fineness in a color concrete block for decoration using a pigment.SOLUTION: This invention relates to a method for mixing 70 wt.% or more of a blast furnace slag fine aggregate based on the total amount of aggregate, in a concrete block for decoration comprising cement, fine aggregate, and a color pigment. Preferably, 80-90 wt.% of the blast furnace slag fine aggregate and 10-20 wt.% of pumice are mixed based on the total amount of aggregate. In the method, when the blast furnace slag fine aggregate is used, color-developing properties as the color concrete block are improved, a surface of the concrete block is made finer, and an improving effect on aesthetic view as the concrete block for decoration can be obtained.SELECTED DRAWING: Figure 1