Evaluation of the dispersion of metakaolin–graphene oxide hybrid in water and cement pore solution: can metakaolin really improve the dispersion of graphene oxide in the calcium-rich environment of hydrating cement matrix?
Kasra Amini, Siavash Soleimani Amiri, Ali Ghasemi, Sajjad Mirvalad, Asghar Habibnejad Korayem
Abstract
The aggregation mechanism of an MK–GO hybrid in the pH range of 10–11 due to the surface complexation between Al(OH)<sub>4</sub><sup>−</sup> formed by MK dissolution and the graphene layer of GO through Lewis acid–base interaction.
Topics & Concepts
MetakaolinCementMaterials sciencePozzolanDispersion (optics)GrapheneChemical engineeringZeta potentialComposite materialOxideNanoparticleNanotechnologyMetallurgyPortland cementEngineeringOpticsPhysicsGraphene and Nanomaterials ApplicationsGraphene research and applicationsConcrete and Cement Materials Research