| 摘要 |
PURPOSE: A construction brick material is provided to obtain resources substitution effect by using waste powdered limestone obtained from a process braking ore, to improve the strength of the brick material and to save cost needed to disposal of waste powdered limestone. CONSTITUTION: A powdered limestone brick using a powdered limestone which has compression strength of 4.78 to 50.90 N/mm¬2, is produced by mixing a powdered limestone, lime, water and sand, settling the mixture for determined time, forming the mixture under pressure and then curing the formed mixture at temperature of 95 to 250°C for 2 to 6 hours. |
