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Rheokinetics and fluidity modification of alkali activated ultrafine metakaolin based geopolymers
Highlights The viscosity growth of geopolymer fits well with power law equations. The viscosity curve can describe the early reaction process and fluidity variation. Low-viscosity activator has the best fluidity modification effect. The effect of SPs on GS relates to its molecular weight and molecular structure.
Abstract The rheokinetics of geopolymer slurry and its fluidity modification methods, as well as modification mechanism were investigated by performing viscosity time dependence experiments and a cement comparative experiment. The results show that the viscosity curve of geopolymer slurry fits well with power law equations. The viscosity time dependence can be employed to characterize the geopolymerization process, and to describe the variations of fluidity with time. K+ activated geopolymer has lower initial viscosity and better fluidity retention than Na+ does. Among superplasticizers, naphthalene-based superplasticizer performs best, but superplasticizers simultaneously promote the deformation of viscosity. Viscosity curve of cement changed unevenly.
Rheokinetics and fluidity modification of alkali activated ultrafine metakaolin based geopolymers
Highlights The viscosity growth of geopolymer fits well with power law equations. The viscosity curve can describe the early reaction process and fluidity variation. Low-viscosity activator has the best fluidity modification effect. The effect of SPs on GS relates to its molecular weight and molecular structure.
Abstract The rheokinetics of geopolymer slurry and its fluidity modification methods, as well as modification mechanism were investigated by performing viscosity time dependence experiments and a cement comparative experiment. The results show that the viscosity curve of geopolymer slurry fits well with power law equations. The viscosity time dependence can be employed to characterize the geopolymerization process, and to describe the variations of fluidity with time. K+ activated geopolymer has lower initial viscosity and better fluidity retention than Na+ does. Among superplasticizers, naphthalene-based superplasticizer performs best, but superplasticizers simultaneously promote the deformation of viscosity. Viscosity curve of cement changed unevenly.
Rheokinetics and fluidity modification of alkali activated ultrafine metakaolin based geopolymers
Ouyang, Gaoshang (author) / Wang, Jingsong (author) / Wang, Rui (author) / Chen, Leping (author) / Bu, Bo (author)
2020-10-06
Article (Journal)
Electronic Resource
English
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