Abstract
sGraphene nanoplates (GNPs) own the growth-potential application in high performance composites materials, and its homogeneously dispersion shows a significant impact on properties of composites. In this paper, GNPs were highly dispersed in aqueous solution with dispersants and treated by ultra-sonication and then incorporated in cement composites. The dispersion effect of different dispersants with ultrasonic treatment on GNPs was represented by UV-absorbance. The effect of dispersion GNPs on rheological properties of GNPs/cement pastes were studied by viscometer. And the early hydration process analysis of GNPs/cement composites was monitored by isothermal calorimetry (TAM Air) and 29Si NMR analysis. In addition, the microstructure and morphology of GNPs and cement composites were shown by SEM, which was the strong support of mechanism of GNPs dispersion in aqueous solution, and effect of dispersed GNPs on hydration and enhancement in cement composites. As a conclusion, GNPs can be dispersed uniformly in aqueous solution with the CO890 concentration of 0.7 g l−1, and viscosity of GNPs/cement pastes decreased because of high specific surface area of GNPs. And early hydration process had been accelerated owning to the free ions exchange resulting from the high adsorption capacity of GNPs for calcium ions and more supererogatory reaction area of GNPs.
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.
