Abstract
Zinc oxide nanoparticles (nano-ZnO) were dispersed uniformly into cement paste by using ultrasonic treatment, and the effects of nano-ZnO on the setting time, strengths, hydration, and microstructure of the cement paste were investigated. The addition of nano-ZnO to cement paste showed a remarkable influence on the early hydration process of the cement paste, whose setting time increased drastically when the content of nano-ZnO was only 0.2 wt% (by weight of cement). The isothermal calorimetry and electrical resistance tests showed that the addition of nanoparticles can prolong the induction period of cement hydration and influence the hydration rate during the acceleration period. The mechanical test results indicated that long-age strengths of cement paste were improved with the increase of nano-ZnO concentrations. Furthermore, nano-ZnO refined the pore diameter distribution and formed a compact microstructure of the cement paste at 28 days.
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.
