Steady viscous flow of some commercial Andean volcanic Portland cement pastes
Source abstract
Abstract
Three commercial Ecuadorian cements, obtained from crushing a mix of clinker and a mixture of pumice powder and volcanic ash, were selected to perform studies on steady viscous flow behaviour. Steady flow curves were obtained during the dormant period. All pastes showed non-linear viscoplastic behaviour. A modified Bingham model was fitted to the experimental data. The yield stress was found to increase and plastic viscosity decreased with clinker substitution. These results were justified by using a model that considers fresh volcanic cement paste as a suspension of particles (cement and volcanic powder) dispersed in a liquid phase, formed by water, and a gel part, formed from the cement–water chemical reaction.
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Research context
OpenAlex topics: Innovations in Concrete and Construction Materials · Concrete and Cement Materials Research · Grouting, Rheology, and Soil Mechanics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
DECEM, Universidad de las Fuerzas Armadas, Sangolquí, Ecuador
Departamento de Física Aplicada II, Universidad de Málaga, Málaga, Spain (corresponding author: )
Departamento de Ingeniería Mecánica, Térmica y de Fluidos, Universidad de Málaga, Málaga, Spain
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