Earticle

초록

영어

This study deals with the non-portland cement mortar made with ground granulated blast-furnace slag, fly ash produced in combined heat power plant and paper sludge ash as binder. As a activator, gypsum (-CaSO4․1/2H2O) which is not strong alkali activator was used. As a result, mortar flow decreased as contents of paper sludge ash increased due to the water adsorption and the arching of paper sludge ash. The porosity of mortar was measured to evaluate the properties of crack and micro structure and the results showed that the porosity increased as water-mortar ratio and contents of paper sludge ash increased. Compressive strength of mortar used paper sludge ash was higher than that of others in early 3days but compressive strength was lower than that of others over 3 days. It was because CaO of paper sludge ash had the same hydration as type O expansion admixture and actual water-mortar ratio decreased due to the water adsorption of paper sludge ash. Also, the formation of Ca(OH)2, C-S-H (Ⅰ,Ⅱ ,Ⅲ), monosulphates and a large amount of ettringite as hydrates was observed.

목차

Abstract
 1. 서론
 2. PSA의 발생 및 활용
  2.1 PSA의 발생
  2.2 물리ㆍ화학적 특성
  2.3 PSA의 활용
 3. 실험계획 및 방법
  3.1 실험계획
  3.2 사용재료
  3.3 실험방법
 4. 실험결과 및 분석
  4.1 유동특성
  4.2 겉 기공률
  4.3 압축강도
  4.4 수화반응 특성
 5. 결론
 참고문헌

저자

• 김노동 [ Kim, No-Dong | 수원과학대학교 건축과 교수 ]
• 박상준 [ Park, Sang-Jun | ㈜대우건설 기술연구원 건축연구팀 책임연구원 ]
• 임남기 [ Lim, Nam-Gi | 동명대학교 건축공학과 교수 ] 교신저자

참고문헌