Magazine of the Korea Concrete Institute (콘크리트학회지)
- Volume 9 Issue 2
- /
- Pages.137-144
- /
- 1997
- /
- 1018-1415(pISSN)
DOI QR Code
Effect of the Variation of Speccfic Gravity and the Addition of Water Repellent Agent on the Physical Properties of Autoclaved Lightweight Concrete
비중의 변화와 발수제 첨가가 경량기포콘크리트의 물성에 미치는 영향
Abstract
The effcct of specific g~avity cont~olled In the .range fiom O.4 to 0.7 by particle size and added amount of A1 powder in the presence or absence of water repellent agent on the physical properties of ALC was examined to evaluate frost resistance and durability. The compressive sttcngth and the tensile strength are increased and independency with water repellent agent when the specific gravity is increased in the range from 0.4 to 0.7. According as the added amount of water repellent agent was increased. frost resistance was improved and absorption ratio was decreased. ALC produced from fine Al powder has a low volume reduction by scaling and a sound apperance after freezing/thawing test and top surface freezing test.
발수제의 유무와 알루미늄분말의 분말도 및 첨가량을 조절하여 비중을 0.4에서 0.7로 변화시켜 비중과 ALC의 기초물성, 내동해성 및 내구성과의 관계를 조사하였다. 압축 및 인장강도는 비중이 0.4에서 0.7로 증가함에 따라 발수제의 첨가량에 관계없이 증가하였고 발수제의 첨가량이 증가하면 내동해성은 개선되었으며 흡수율은 감소하였다. 입경이 작은 AI분말을 이용항 제조한 ALC의 박리에 의한 체적감소율은 낮게 나타났으며 일면동결지속시험 및 기중동결수중융해시험에서도 내동해성이 우수한 것으로 나타났다.