In general, polymer cement mortars that is made from organic polymer dispersion and cement have good workability compared with ordinary cement due to ball-bearing acting of polymer particles in cement mortar. The purpose of this study is to evaluate the workability of cement mortar according to adding of admixtures such as polymer dispersions, blast-furnace slag and fly ash. From the test results, the flow of polymer-modified mortars is increased with increasing polymer-cement ratio, and also is a little improved according to adding of fly ash compared to blast-furnace slag.

• 조영국(청운대학교 건축공학과 교수, 공학박사) | Jo, Young Kug
• 여윤정(청운대학교 건축공학과 학부과정) | Yeo, Yun Jeong