Effect of various plasticisers on viscous flow properties of natural pozzolanic cement pastes

Autor:	J. F. Velázquez-Navarro, N.M. Páez-Flor, Francisco Jose Rubio-Hernandez
Rok vydání:	2020
Předmět:	Cement Portland cement Materials science law Viscous flow Plasticizer General Materials Science Lignosulfonates Building and Construction Pozzolan Composite material law.invention
Zdroj:	Advances in Cement Research. 32:20-29
ISSN:	1751-7605 0951-7197
DOI:	10.1680/jadcr.18.00058
Popis:	The effect of various plasticisers (lignosulfonates and copolymers) on volcanic cement was assessed in this study. The volcanic cement was designed by substituting Portland cement with a natural volcanic pozzolan resulting from Andean volcanic activity. The best results (i.e. the volcanic cement pastes that showed shear-thickening viscous flow behaviour) were obtained when the zero-shear viscosity, minimum viscosity and shear rate for the onset of shear-thickening behaviour showed dependency on the paste concentration, Portland cement substitution and plasticiser concentration. The results were verified by the distorting effect of solid particles on the flow field.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9ba8d27db73115c7c01598b55c7f1565 https://doi.org/10.1680/jadcr.18.00058 Zobrazit plný text záznamu