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Reducing the Waiting-On-Cement Time of Geopolymer Well Cement using Calcium Chloride (CaCl2) as the Accelerator: Analysis of the Compressive Strength and Acoustic Impedance for Well Logging

1
PETRONAS Research Sdn. Bhd., Bandar Baru Bangi, Selangor 43000, Malaysia
2
Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, Perak 32610, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editor: José Ignacio Alvarez
Sustainability 2021, 13(11), 6128; https://doi.org/10.3390/su13116128
Received: 28 April 2021 / Revised: 25 May 2021 / Accepted: 25 May 2021 / Published: 28 May 2021
(This article belongs to the Section Sustainable Materials)
Geopolymer cement (GPC) is an aluminosilicate-based binder that is cost-effective and eco-friendly, with high compressive strength and resistance to acid attack. It can prevent degradation when exposed to carbon dioxide by virtue of the low calcium content of the aluminosilicate source. The effect of the concentration of calcium chloride (CaCl2) as the accelerator on the compressive strength and acoustic impedance of GPC for well cement, while exposed to high pressure and high temperatures, is presented. Fly ash from the Tanjung Bin power plant, which is categorized as Class F fly ash according to ASTM C618-19, was selected as the aluminosilicate source for the GPC samples. Sodium hydroxide and sodium silicate were employed to activate the geopolymerization reaction of the aluminosilicate. Five samples with a density of 15 ppg were prepared with concentrations of CaCl2 that varied from 1% to 4% by weight of cement. Findings revealed that the addition of 1% CaCl2 is the optimum concentration for the curing conditions of 100 °C and 3000 psi for 48 h, which resulted in the highest compressive strength of the product. Results also indicate that GPC samples that contain CaCl2 have a smaller range of acoustic impedance compared to that of ordinary Portland cement. View Full-Text
Keywords: accelerator; acoustic impedance; acoustic velocity; additive; calcium chloride; compressive strength; geopolymer cement; ordinary Portland cement; transit time; well cement accelerator; acoustic impedance; acoustic velocity; additive; calcium chloride; compressive strength; geopolymer cement; ordinary Portland cement; transit time; well cement
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MDPI and ACS Style

Zulkarnain, N.N.; Farhan, S.A.; Sazali, Y.A.; Shafiq, N.; Abd Rahman, S.H.; Abd Hamid, A.I.; Habarudin, M.F. Reducing the Waiting-On-Cement Time of Geopolymer Well Cement using Calcium Chloride (CaCl2) as the Accelerator: Analysis of the Compressive Strength and Acoustic Impedance for Well Logging. Sustainability 2021, 13, 6128. https://doi.org/10.3390/su13116128

AMA Style

Zulkarnain NN, Farhan SA, Sazali YA, Shafiq N, Abd Rahman SH, Abd Hamid AI, Habarudin MF. Reducing the Waiting-On-Cement Time of Geopolymer Well Cement using Calcium Chloride (CaCl2) as the Accelerator: Analysis of the Compressive Strength and Acoustic Impedance for Well Logging. Sustainability. 2021; 13(11):6128. https://doi.org/10.3390/su13116128

Chicago/Turabian Style

Zulkarnain, Nurul N., Syed A. Farhan, Yon A. Sazali, Nasir Shafiq, Siti H. Abd Rahman, Afif I. Abd Hamid, and Mohd F. Habarudin 2021. "Reducing the Waiting-On-Cement Time of Geopolymer Well Cement using Calcium Chloride (CaCl2) as the Accelerator: Analysis of the Compressive Strength and Acoustic Impedance for Well Logging" Sustainability 13, no. 11: 6128. https://doi.org/10.3390/su13116128

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