TY - JOUR
T1 - Effect of curing temperature and water-to-cement ratio on corrosion of steel in calcium aluminate cement concrete
AU - Ahmed, Ahmed A.
AU - Shakouri, Mahmoud
AU - Trejo, David
AU - Pavan Vaddey, Naga
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/10/3
Y1 - 2022/10/3
N2 - This study evaluated the corrosion resistance of pure calcium aluminate cement (CAC) concrete specimens made with water-to-cement (w/c) ratios of 0.4, 0.5, and 0.6 and cured at 4, 21, and 90 °C following the ASTM G109 standard. Thermogravimetric analysis results showed increased CAC conversion with increased curing temperature. Compressive strength and bulk electrical resistivity measurements showed that the CAC specimens had lower strength and higher bulk electrical resistivity than ordinary portland cement (OPC) concrete. Macrocell corrosion currents measured after cyclic exposure to chloride solutions showed that the CAC specimens were highly permeable and less resistant to chloride-induced corrosion than OPC concrete. Among the different CAC specimens tested in this study, the specimens made with a w/c of 0.4 and cured at 90 °C showed the highest corrosion resistance.
AB - This study evaluated the corrosion resistance of pure calcium aluminate cement (CAC) concrete specimens made with water-to-cement (w/c) ratios of 0.4, 0.5, and 0.6 and cured at 4, 21, and 90 °C following the ASTM G109 standard. Thermogravimetric analysis results showed increased CAC conversion with increased curing temperature. Compressive strength and bulk electrical resistivity measurements showed that the CAC specimens had lower strength and higher bulk electrical resistivity than ordinary portland cement (OPC) concrete. Macrocell corrosion currents measured after cyclic exposure to chloride solutions showed that the CAC specimens were highly permeable and less resistant to chloride-induced corrosion than OPC concrete. Among the different CAC specimens tested in this study, the specimens made with a w/c of 0.4 and cured at 90 °C showed the highest corrosion resistance.
KW - Calcium aluminate cement
KW - Chlorides
KW - Conversion
KW - Corrosion
KW - Ordinary portland cement
UR - https://www.scopus.com/pages/publications/85136522374
U2 - 10.1016/j.conbuildmat.2022.128875
DO - 10.1016/j.conbuildmat.2022.128875
M3 - Article
AN - SCOPUS:85136522374
SN - 0950-0618
VL - 350
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 128875
ER -