Abstract
The increase in activated carbon content accelerated the corrosion of rebar (steel) in ordinary Portland cement (OPC) mortar containing fly ash and different percentages of carbon. The alkalinity of the cement was greatly affected with increased carbon contents, and when the quantity of carbon was increased, cement lost its characteristic colour. For the exposure period of one year, more than 60% of the surface area was rusted when the carbon content was increased beyond 8%. Corrosion rates comparable to OPC were obtained for up to 6% carbon level. Therefore it was concluded that the upper limit of replacement for various admixed carbon systems, under aggressive alternate wetting and drying conditions with 3% NaCl, was 6–8%.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.