AUTHOR=Sun Lijun , Pang Xueyu , Yan Haibing 

TITLE=Hydration kinetics of oil well cement in the temperature range between 5 and 30°C

JOURNAL=Frontiers in Materials

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2022.985332

DOI=10.3389/fmats.2022.985332

ISSN=2296-8016

ABSTRACT=<p>Modeling the hydration kinetics of oil well cement as a function of temperature is critical for offshore cementing projects related to natural gas hydrates. During this study, the heat release of oil well cement hydration in the temperature range between 5 and 30°C was monitored by isothermal calorimetry. The influence of the source of cement, water-to-cement (w/c) ratio, and CaCl<sub>2</sub> on hydration kinetics was evaluated in great detail. Results indicated the temperature effect on cement hydration kinetics can be modeled by a scale factor derived from the apparent activation energy (<italic>E</italic><sub><italic>a</italic></sub>) of the cement reaction. <italic>E</italic><sub><italic>a</italic></sub> showed moderate dependence on the cement source and relatively little dependence on the w/c ratio and CaCl<sub>2</sub> addition. By combining with previous experimental data, a function correlating <italic>E</italic><sub><italic>a</italic></sub> and temperature in a wide temperature range (5–87°C) was obtained.</p>