Abstract
In this study, the effect of moisture migration and water vapor pressure build-up within high-strength concrete (HSC) on its spalling property is empirically investigated at various heating rates and compressive strengths with different water-binder ratios (W/B). An experiment is conducted on concrete specimens with various W/Bs by applying two different heating rates: fast and slow heating. It is confirmed that the moisture migration and water vapor pressure within the concrete differ, depending upon the W/B and heating rate. For HSC with W/B less than 0.33, surface spalling occurs due to the formation of moisture clogs on the surfaces of the concrete specimens, under the fast heating condition. For HSC with dense microstructures, although moisture clogs are not formed at specific positions within the concrete specimens, explosive spalling occurs due to boiling liquid expanding vapor explosion (BLEVE) in the concrete pores, under the slow heating condition.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
