Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Effect of delaying addition of some concrete admixtures on the rheological properties of cement pastes
The effect of delayed addition of two concrete admixtures, namely melamine formaldehyde sulfonate (MFS) and naphthalene formaldehyde sulfonate (NFS), on the rheological and adsorption properties of ordinary Portland cement (OPC), sulfate-resisting cement (SRC) and silica fume-ordinary Portland cement (SF-OPC) pastes was investigated. The admixture addition was delayed by 1, 3, 6, 10 and 13 min after the addition of mixing water. The shear stress, as well as the apparent viscosity of these cement pastes, was determined at different shear rates. Total organic carbon (TOC), Ca2+ concentration and conductivity of the filtrate and the combined water content of the precipitated cement pastes were determined. The results show that delaying the admixtures addition increases the cement pastes workability than that of simultaneous addition.
Effect of delaying addition of some concrete admixtures on the rheological properties of cement pastes
The effect of delayed addition of two concrete admixtures, namely melamine formaldehyde sulfonate (MFS) and naphthalene formaldehyde sulfonate (NFS), on the rheological and adsorption properties of ordinary Portland cement (OPC), sulfate-resisting cement (SRC) and silica fume-ordinary Portland cement (SF-OPC) pastes was investigated. The admixture addition was delayed by 1, 3, 6, 10 and 13 min after the addition of mixing water. The shear stress, as well as the apparent viscosity of these cement pastes, was determined at different shear rates. Total organic carbon (TOC), Ca2+ concentration and conductivity of the filtrate and the combined water content of the precipitated cement pastes were determined. The results show that delaying the admixtures addition increases the cement pastes workability than that of simultaneous addition.
Effect of delaying addition of some concrete admixtures on the rheological properties of cement pastes
El-Aleem, S.A. (Autor:in) / Aiad, I. (Autor:in) / El-Didamony, H. (Autor:in)
Cement and Concrete Research ; 32 ; 1839-1843
2002
5 Seiten, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2002
Influence of some organic admixtures on the rheological and mechanical properties of cement pastes
| Online Contents | 2006
| British Library Online Contents | 2016
| British Library Online Contents | 2016