Self-re-adhering alkali-activated cement composite and its ability to mitigate corrosion of carbon steel in 300 °C hydrothermal environment
Abstract
Cement-steel interface is a weak point of cement sheath integrity under the environments of high-temperature geothermal wells. This paper presents carbon steel (CS) adherence behaviors of 300 °C-autoclaved alkali-activated Calcium-Aluminate-Cement (CAC)/fly ash F (FAF) (Thermal Shock Resistant Cement, TSRC), granulated blast furnace slag (GBFS)/SiO2, and Ordinary Portland Cement (OPC)/SiO2 blends. The composites’ ability to preserve the bond under the conditions of thermal shock (TS) and strong acid attack (pH 0.6 H2SO4/brine at 90 °C) as well as their ability to recover the damaged bond and provide steel corrosion protection after additional short-time 5-day curing at 300 °C were evaluated. GBFS/SiO2 sheath underwent catastrophic failure in the first TS cycle; OPC/SiO2 lost 78 % and TSRC 51 % of the bond strength in 6 cycles. Only TSRC-CS bond survived 30 days of strong acid exposure; OPC/SiO2 bond failed after 18 days and GBFS/SiO2 after 20 days. Addition of micro-glass fibers (MGF) to TSRC further improved its bond strength and CS corrosion protection. Samples of TSRC-CS cured for 30 days at 300 °C before the bond damage recovered 49 % of the damaged bond strength after additional short-time curing. The CS protected by the re-adhered TSRC showed low corrosion rate of 0.13more »
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Geothermal Technologies Office; National Science Foundation (NSF)
- OSTI Identifier:
- 1767429
- Report Number(s):
- BNL-221097-2021-JAAM
Journal ID: ISSN 0375-6505
- Grant/Contract Number:
- SC0012704; AC02-98CH10886; OCE-1336724
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Geothermics
- Additional Journal Information:
- Journal Volume: 96; Journal ID: ISSN 0375-6505
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 15 GEOTHERMAL ENERGY; alkali-activated cement; cement-carbon steel bond; acid resistance; thermal shock resistance; slag
Citation Formats
Sugama, Toshifumi, and Pyatina, Tatiana. Self-re-adhering alkali-activated cement composite and its ability to mitigate corrosion of carbon steel in 300 °C hydrothermal environment. United States: N. p., 2021.
Web. doi:10.1016/j.geothermics.2021.102068.
Sugama, Toshifumi, & Pyatina, Tatiana. Self-re-adhering alkali-activated cement composite and its ability to mitigate corrosion of carbon steel in 300 °C hydrothermal environment. United States. https://doi.org/10.1016/j.geothermics.2021.102068
Sugama, Toshifumi, and Pyatina, Tatiana. Thu .
"Self-re-adhering alkali-activated cement composite and its ability to mitigate corrosion of carbon steel in 300 °C hydrothermal environment". United States. https://doi.org/10.1016/j.geothermics.2021.102068. https://www.osti.gov/servlets/purl/1767429.
@article{osti_1767429,
title = {Self-re-adhering alkali-activated cement composite and its ability to mitigate corrosion of carbon steel in 300 °C hydrothermal environment},
author = {Sugama, Toshifumi and Pyatina, Tatiana},
abstractNote = {Cement-steel interface is a weak point of cement sheath integrity under the environments of high-temperature geothermal wells. This paper presents carbon steel (CS) adherence behaviors of 300 °C-autoclaved alkali-activated Calcium-Aluminate-Cement (CAC)/fly ash F (FAF) (Thermal Shock Resistant Cement, TSRC), granulated blast furnace slag (GBFS)/SiO2, and Ordinary Portland Cement (OPC)/SiO2 blends. The composites’ ability to preserve the bond under the conditions of thermal shock (TS) and strong acid attack (pH 0.6 H2SO4/brine at 90 °C) as well as their ability to recover the damaged bond and provide steel corrosion protection after additional short-time 5-day curing at 300 °C were evaluated. GBFS/SiO2 sheath underwent catastrophic failure in the first TS cycle; OPC/SiO2 lost 78 % and TSRC 51 % of the bond strength in 6 cycles. Only TSRC-CS bond survived 30 days of strong acid exposure; OPC/SiO2 bond failed after 18 days and GBFS/SiO2 after 20 days. Addition of micro-glass fibers (MGF) to TSRC further improved its bond strength and CS corrosion protection. Samples of TSRC-CS cured for 30 days at 300 °C before the bond damage recovered 49 % of the damaged bond strength after additional short-time curing. The CS protected by the re-adhered TSRC showed low corrosion rate of 0.13 mm/year (TSRC-MGF), 0.2 mm/year (TSRC) vs. 0.64 mm/year for OPC/SiO2 protected CS.},
doi = {10.1016/j.geothermics.2021.102068},
journal = {Geothermics},
number = ,
volume = 96,
place = {United States},
year = {Thu Aug 12 00:00:00 EDT 2021},
month = {Thu Aug 12 00:00:00 EDT 2021}
}
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