Development of cement-free concrete using finely grained slag for Portland cement
- Title
- Development of cement-free concrete using finely grained slag for Portland cement
- Author
- 안기용
- Keywords
- Adiabatic temperature; GGBS; Ionic penetrability; Pore structure
- Issue Date
- 2013-04
- Publisher
- Scitec Publications Ltd.
- Citation
- Applied Mechanics and Materials, v. 316-317, Page. 1063-1070
- Abstract
- The present study concerns a development of cement-free concrete using finely grained ground granulated blast furnace slag (GGBS) rather than ordinary Portland cement (OPC) as a binder in concrete mix. The GGBS was very finely ground to the level of 10,000 cm2/g, prior to casting concrete, compared to OPC of which the Blaine value accounts for about 3,200 cm2/g. In concrete casting, the NaOH activator was added to mixing water to enhance the hydration rate for cement-free concrete. To ensure the compatibility of GGBS in concrete, a development of concrete strength, ionic penetrability and pore structure were examined. As a result, it was found that cement-free concrete using the GGBS has a higher concrete strength at all ages from 7 to 56 days. In turn, the ionic penetrability, in terms of chloride diffusivity, was slightly lower in cement-free concrete than OPC concrete, presumably due to the dense pore structure, which was confirmed by the mercury intrusion porosimetry. Simultaneously, the adiabatic temperature for cement-free concrete initially rose more rapidly, leading to an accelerated hydration process. This suggests that the cement-free concrete containing GGBS can be used for structural concrete structures, imposing an economical benefit and structural stability. © (2013) Trans Tech Publications, Switzerland.
- URI
- https://www.scientific.net/AMM.316-317.1063https://repository.hanyang.ac.kr/handle/20.500.11754/176037
- ISSN
- 1660-9336
- DOI
- 10.4028/www.scientific.net/AMM.316-317.1063
- Appears in Collections:
- COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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