A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of superplasticizers in blended cement systems
In this study, two of the widely used type of superplasticizers, one based on SNF (sulphonated naphthalene formaldehyde condensate) and another based on PC (polycarboxylate polymers), were tested with ten blended cement mixtures containing 20 %, 30 %, 50 %, or 80% portland cement replacement with one or more of supplementary cementitious materials like natural pozzolans, fly ashes, and slags. The action of superplasticizer on cement pastes was monitored by making zeta potential, pH, and temperature measurements as well as by using DTA-TG method for determining the hydration and hardening process. Porosity and strength development were also measured at different ages. The aim of the research work was to find which type of superplasticizer was more suitable for each type of binder system. The highest reduction of water demand was achieved with polycarboxylate polymer superplasticizer. Results show that compared to the plain portland cement system, the decrease of water/binder ratio with superplasticizer addition was lower in blended cements.
Performance of superplasticizers in blended cement systems
In this study, two of the widely used type of superplasticizers, one based on SNF (sulphonated naphthalene formaldehyde condensate) and another based on PC (polycarboxylate polymers), were tested with ten blended cement mixtures containing 20 %, 30 %, 50 %, or 80% portland cement replacement with one or more of supplementary cementitious materials like natural pozzolans, fly ashes, and slags. The action of superplasticizer on cement pastes was monitored by making zeta potential, pH, and temperature measurements as well as by using DTA-TG method for determining the hydration and hardening process. Porosity and strength development were also measured at different ages. The aim of the research work was to find which type of superplasticizer was more suitable for each type of binder system. The highest reduction of water demand was achieved with polycarboxylate polymer superplasticizer. Results show that compared to the plain portland cement system, the decrease of water/binder ratio with superplasticizer addition was lower in blended cements.
Performance of superplasticizers in blended cement systems
Einsatzverhalten von Superplastifizierern in Zementmischungssystemen
Papayianni, I. (author) / Karkantelidou, F. (author)
2009
18 Seiten, 42 Bilder, 5 Tabellen, 7 Quellen
Conference paper
English
SP-262-2 Performance of Superplasticizers in Blended Cement Systems
| British Library Conference Proceedings | 2009
Effect of some superplasticizers on the properties of silica fume blended cement pastes
| Tema Archive | 2000