JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Strength Development and Drying Shrinkage in Recycled Coal-Ash Building Material
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Strength Development and Drying Shrinkage in Recycled Coal-Ash Building Material
Jo, Byung-Wan; Kim, Young-Jin; Park, Jong-Bin;
  PDF(new window)
 Abstract
Recently, since industrial waste and life waste leaped into a pollution source, the building material used now a days is striking the limit. The purpose of this paper is to investigate an application of recycled coal ash using non-sintering method in the construction field. Accordingly, compressive strength, elastic modulus and drying shrinkage were experimentally studied for hardened coal ash using the non-sintering method. Also, Lineweaver and Burk method were applied to the regression analysis of drying shrinkage for the proposal equation. Elastic modulus, compressive strength of material become the basis properties of structural design. And these properties by age for hardened coal ash are important because of change by pozzolan reaction. This hardened coal ash is weak for tensile stress like that of concrete. And drying shrinkage is very important factor to make huge tensile force in early age. In the results, although some differences were shown when comparing coal ash with mortar or concrete, the application as a building material turned out to be possible if further researches were carried out. And the shrinkage characteristic of hardened coal-ash reveals to be similar to that of moderate heat cement.
 Keywords
Coal-ash;compressive strength;elastic modulus;drying shrinkage;
 Language
Korean
 Cited by
 References
1.
환경부, '2000년 환경백서', 2001, pp.510-537

2.
산업자원부, 에너지 관리공단, '석탄회를 이용한 환경친화 건설자재의 개발', 2002, pp.1-27

3.
ASTM, '1996 Annual Book of ASTM Standards' Vol. 4 No. 2, Concrete and aggregates. 1996

4.
문제길, 변동균, 신현묵, '철근 콘크리트', 동명사,1999, pp.6~32

5.
한국콘크리트학회, '콘크리트공학', 기문당, 1994, pp.29-61

6.
Wittmann F. H., 'Creep and Shrinkage Mecha-nisms,' Creep and Shrinkage in ConcreteStructures, editor by Bazant Z. R., Wittmann F. H.,John Wiley & Sons Ltd, 1982., pp.129~161

7.
Hansen T. C. and Mattock A. H., 'Influence ofSize and Shape of Member on the Shrinkage andCreep of Concrete,' Journal of ACI, Vol. 63, 1966

8.
Bazant, Z. R., Wittmann F. H., 'Creep and Shrinkage in Concrete Structures' John Wiley and Sons, 1982. 447pp

9.
장일영, 박훈규, 윤영수, '국내의 실험자료를 이용한 고강도 및 초고강도 콘크리트의 탄성계수식 제안', 콘크리트학회지, 제 8권 6호, 1996, pp.213~222

10.
Xiaoming, S. H., Al-Omaishi, N., Tadros, M. K.,'Creep, Shrinkage, and Modulus of Elasticity ofHigh Performance Concrete,' ACI Materials Journal, Vol. 98, No.6, 2001, pp.440~449

11.
김진근, 양은익, 권극헌., '콘크리트 건조수축에 대한실험과 통계적 예측', 대한건축학회 4권 2호, 1988,pp.131~140