Abstract
Pozzolanic reactivity of silica fume(SF) in silica fume-cement (SFC)pastes was studied by 29Si MAS NMR combined with deconvoluton technique, respectively. The experimental results indicate that SF possess an high pozzolanic reactivity. About 41% of SF at 3d and about 96% at 120d have reacted in a paste with SF of 10% in mass. In the highly alkaline environment of the cement paste, monomers formed after the covalent bonds of Si-O-Si in SF were broken, which can connect C-S-H dimers to form highly polymerized C-S-H, and increase the ACL of C-S-H.
Sign-in/Register to access full text options 
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.
