Magazine of the Korea Concrete Institute (콘크리트학회지)
- Volume 7 Issue 5
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- Pages.155-163
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- 1995
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- 1018-1415(pISSN)
DOI QR Code
A Study on the Properties & Application for High-Calcium Fly Ash
고칼슘 플라이애쉬의 특성 및 활용방안에 관한 연구
Abstract
The primary purpose of this study is to hvestigate reusal techniques of high calclun-i fly ash in the construct.ion field, which may contribute to the savings of construction materials and consenratlng environment. Furt.hcrrnore, it can setup material properties or characteristics requiremi for development of new materials. Firstly, chemical and physical cahraci.eristics of liigh~calciurn fly ash is arialyseti. And then, the usability of the concrete is tcsted by investigating the flowablility and strength development through parameters of various replace ment r,itios with respect to different nuxing conditions. Finally, the durability and mechanical properties(e1astic nlodulus of the concrete is tested. As the result of the study, the following conclusions are derived : (1) the quaritii y of the CaO The primary purpose of this study is to hvestigate reusal techniques of high calclun-i fly ash in the co:lstruct.ion field, which may contribute to the savings of construction materials and consenratlng environment. Furt.hcrrnore, it can setup material properties or characteristics requiremi for development of new materials. Firstly, chemical and physical cahraci.eristics of liigh~calciurn fly ash is arialyseti. And then, the usability of the concrete is tcsted by investigating the flowablility and strength development through parameters of various replace ment r,itios with respect to different nuxing conditions. Finally, the durability and mechanical properties(e1astic nlodulus of the concrete is tested. As the result of the study, the following conclusions are derived : (1) the quaritii y of the CaO
본 연구의 목적은 고칼슘 플라이애쉬를 건설산업에 재활용하는 방안을 확보하는 것이며 이를 통해 자원 재활용은 물론 환경보존, 경제성, 신재료 등의 개발측면에 보다 많은 자료를 실험을 통해 정립하고자 한다. 이러한 연구를 위해 고칼슘 플라이애쉬의 화학적.물리적 특성을 분석하였으며, 콘크리트에 사용 가능성을 검토하기 위하여 배합조건별 치환율을 선정하여 각각의 변수에 대한 유동성 및 강도발현 성상을 비교.분석하였다. 또한 콘크리트의 내구성 및 탄성계수와 같은 역학적 특성도 알아보았다. 본 연구결과, (1) 화학적 분석결과, 유리석회(CaO)의 함량이 높다. (2) 모르타르의 단위수량비는 증가, 압축강도비는 규준을 만족하였다. (3) FA 30%, W/B 40%범위에서
Keywords
- high-calcium fly ash;
- replacement ratio;
- mixing conditions;
- elaspsed time;
- elastic modulus;
- strength development;
- durability