| abstract |
The present invention relates to a cement composition including a rapidly cured expansion agent including artificial marble waste powder, gypsum, and limestone, Portland cement, gypsum, and quicklime. The rapidly cured expansion agent includes 20-60 wt% of artificial marble waste powder, 10-30 wt% of gypsum, and limestone, is sintered at 1,200-1,500 deg.C, and is pulverized into 10-90 micrometers. |