TY - CONF SN - 18777058 N2 - This research was conducted to compare class C and class F fly ash as cementitious materials. The fly ash was supplied by local power plants in Malaysia. The chemical composition analysis showed that class F fly ash has more Si and Al content compared to class C fly ash which affects the amount of the produced gel during the pozzolanic reactivity or/and geopolymerization. The chemical bonding analysis showed that class F fly ash has more bond structure (C-S-H, C-A-H, -Si-O-Al-, and -Si-O-Si-) than class C fly ash. Finally, the microstructure images indicated the similarity of the fly ash particles shape on both classes. Furthermore, the microstructure images showed a correlation between the chemical composition and the bond structure in terms of the high element content (Si and Al) forming the gel and the bond structure in the cementitious process during pozzolanic reaction or/and geopolymerization. © 2016 The Authors. Published by Elsevier Ltd. Y1 - 2016/// KW - Aluminum; Characterization; Chemical analysis; Chemical bonds; Fluorine; Fly ash; Inorganic polymers; Microstructure; Powders; Process engineering; Silicon KW - Ash characterization; Cementitious materials; Chemical bondings; Chemical composition analysis; Chemical compositions; Paste; Pozzolanic reaction; Pozzolanic reactivity KW - C (programming language) TI - Study of Fly Ash Characterization as a Cementitious Material A1 - Fauzi, A. A1 - Nuruddin, M.F. A1 - Malkawi, A.B. A1 - Abdullah, M.M.A.B. UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85013992189&doi=10.1016%2fj.proeng.2016.06.535&partnerID=40&md5=117d3f2ed01d6d39fa0e65ae44b1fc13 N1 - cited By 78; Conference of 4th International Conference on Process Engineering and Advanced Materials, ICPEAM 2016 ; Conference Date: 15 August 2016 Through 17 August 2016; Conference Code:131138 ID - scholars7427 EP - 493 SP - 487 PB - Elsevier Ltd AV - none VL - 148 ER -