Journal
CONSTRUCTION AND BUILDING MATERIALS
Volume 161, Issue -, Pages 365-373Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2017.11.152
Keywords
Recycled aggregate; High calcium fly ash; Metakaolin; Geopolymer concrete
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Funding
- Faculty of Engineering, Khon Kaen University
- Thailand Research Fund (TRF) under the Royal Golden Jubilee Ph.D. Program [PHD/0195/2557]
- Khon Kaen University under the Royal Golden Jubilee Ph.D. Program [PHD/0195/2557]
- TRF [RTA5780004, BRG6080010]
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This study aims to investigate the effects of metakaolin (MK) on the properties of a fly ash-based geopolymer concrete containing 100% recycled coarse aggregate from crushed specimens of laboratory. The MK was used as a partial replacement for high calcium fly ash (HCF) in geopolymer binders. The results showed that geopolymer concrete with MK has better strength, porosity, water absorption, and acid resistance. Increasing the use of MK leads to higher strengths in both natural and recycled aggregate geopolymer concrete. Furthermore, the high calcium fly ash blended with MK geopolymer concrete containing recycled aggregate is suitable for environment friendly construction and is comparable in terms of mechanical performance to a normal geopolymer concrete made with natural aggregate. (C) 2017 Elsevier Ltd. All rights reserved.
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