eprintid: 20197 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/02/01/97 datestamp: 2024-06-04 14:19:56 lastmod: 2024-06-04 14:19:56 status_changed: 2024-06-04 14:16:49 type: article metadata_visibility: show creators_name: Zulkarnain, N.N. creators_name: Sazali, Y.A. creators_name: Hamid, A.I.A. creators_name: Kamizan, N. creators_name: Rahman, S.H.A. creators_name: Razak, A.A.A. creators_name: Habarudin, M.F. title: Characterization of Fly Ash: Effect on Compressive Strength and Thickening Time of Alkaline-Activated Fly Ash Cement at Downhole Condition ispublished: pub keywords: Alumina; Aluminum oxide; Cements; Compressive strength; Construction industry; Geopolymers; Inorganic polymers; Iron oxides; Lime; Silica, Activated fly ash; Alkalines; Ash composition; Ash effects; Downhole conditions; Fly ash composition; Geopolymer; Geopolymer cement; Geopolymer well cement; Thickening time, Fly ash note: cited By 0; Conference of 1st International Conference on Emerging Smart Cities, ICESC 2022 ; Conference Date: 1 December 2022 Through 2 December 2022; Conference Code:306839 abstract: The construction industry is currently switching to geopolymer cement, a greener product from power plant waste. While the utilization of geopolymer cement in the construction industry is well-known, its application as well cement is still being researched. Current study analyzes fly ash composition from two power plants, Tanjung Bin and Manjung Power Plant, on compressive strength and thickening time under downhole conditions per API RP 10B-2. Findings on compressive strength reveal that silica to alumina ratios of 2.0 to 2.5 resulted in higher compressive strength than ratios of less than 2.0. In addition, compressive strength increases as iron oxide and calcium oxide concentrations increase from 7.79 to 15.9 and 6.73 to 22.2, respectively. Fly ash composition had almost no effect on geopolymer cement thickening time at 60 °C and 2000psi. The thickening time is more likely to be influenced by extrinsic factors, including temperature, pressure, and the presence of a retarder or accelerator. © 2024, Institute of Technology PETRONAS Sdn Bhd. date: 2024 publisher: Springer Science and Business Media Deutschland GmbH official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85184281849&doi=10.1007%2f978-981-99-1111-0_10&partnerID=40&md5=3dae7106e446e5bdb00f3e24e896286d id_number: 10.1007/978-981-99-1111-0₁₀ full_text_status: none publication: Lecture Notes in Civil Engineering volume: 324 pagerange: 107-118 refereed: TRUE isbn: 9789819911103 issn: 23662557 citation: Zulkarnain, N.N. and Sazali, Y.A. and Hamid, A.I.A. and Kamizan, N. and Rahman, S.H.A. and Razak, A.A.A. and Habarudin, M.F. (2024) Characterization of Fly Ash: Effect on Compressive Strength and Thickening Time of Alkaline-Activated Fly Ash Cement at Downhole Condition. Lecture Notes in Civil Engineering, 324. pp. 107-118. ISSN 23662557