Abstract
Cement paste specimens made from Type G oil well cement (OWC) and Type II ordinary Portland cement (OPC) are prepared using 0.45 water to cement ratio (w/c). The specimens were then hydrated under two curing conditions; room condition (20 °C with 0.1 MPa pressure) and an elevated condition (80 °C with 10 MPa pressure) for 28 days. The compressive strength of the hydrated cement pastes was measured using ϕ 30 mm diameter ×60 mm height cylinders. The calcium silicate hydrates (C-S-H) polymerization of the hydrated cement pastes was investigated using 29Si MAS nuclear magnetic resonance (NMR) measurements. The correlation between the compressive strength of the cement paste and C-S-H polymerization was confirmed and discussed in light of basic C-S-H unit polymerization and the gel-space ratio.
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Acknowledgements
This work was supported by “The development of CO2 geological storage technologies through 1,000 t CO2-EOR pilot test” of the Korean Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Trade, Industry and Energy (MOTIE) (No. 2012 T100201728). The first author would like to acknowledge Foundation (NRF) Grant funded by the Korean government (MOE) (no. 2013R1A1A2062784).
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Kim, J.J., Youm, KS., Chae, KS., Taha, M.R. (2015). Correlating Mechanical Properties and C-S-H Polymerization of Hardened Cement Paste Cured Under High Temperature and Pressure. In: Sobolev, K., Shah, S. (eds) Nanotechnology in Construction. Springer, Cham. https://doi.org/10.1007/978-3-319-17088-6_13
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DOI: https://doi.org/10.1007/978-3-319-17088-6_13
Publisher Name: Springer, Cham
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