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The influence of silica fume on the compressive strength of cement paste and mortar
The compressive strengths of silica fume cement paste and mortar were evaluated at various water-cementitious ratios. Five different water-cementitious ratios were used including, 0.22, 0.25, 0.28, 0.31 and 0.34 and two contents of silica fume, 16 % and 25 % by weight of cement. Superplasticizer content was adjusted for each mix to ensure that no segregation would occur. The results show that the increase in compressive strength of mortar containing silica fume, as a partial replacement for cement, greatly contributes to strengthening the bond between the cement paste and aggregate. Partial replacement of cement by silica fume and the addition of superplasticizer increases the strength of mortar but has no influence on the strength of cement paste. Results were verified by statistical analysis using hypothesis testing at a 95 % confidence level. It was also demonstrated that superplasticizer in combination with silica fume plays a more effective role in mortar mixes than in paste mixes. This can be attributed to a more efficient utilization of superplasticizer in the mortar mixes due to the better dispersion of the silica fume particles. The paper also reviews some of the available literature on the influence of silica fume on cementitious composites and unsettled questions associated with this topic.
The influence of silica fume on the compressive strength of cement paste and mortar
The compressive strengths of silica fume cement paste and mortar were evaluated at various water-cementitious ratios. Five different water-cementitious ratios were used including, 0.22, 0.25, 0.28, 0.31 and 0.34 and two contents of silica fume, 16 % and 25 % by weight of cement. Superplasticizer content was adjusted for each mix to ensure that no segregation would occur. The results show that the increase in compressive strength of mortar containing silica fume, as a partial replacement for cement, greatly contributes to strengthening the bond between the cement paste and aggregate. Partial replacement of cement by silica fume and the addition of superplasticizer increases the strength of mortar but has no influence on the strength of cement paste. Results were verified by statistical analysis using hypothesis testing at a 95 % confidence level. It was also demonstrated that superplasticizer in combination with silica fume plays a more effective role in mortar mixes than in paste mixes. This can be attributed to a more efficient utilization of superplasticizer in the mortar mixes due to the better dispersion of the silica fume particles. The paper also reviews some of the available literature on the influence of silica fume on cementitious composites and unsettled questions associated with this topic.
The influence of silica fume on the compressive strength of cement paste and mortar
Silicaraucheinfluß auf Druckfestigkeiten von Mörtel und Zementpaste
Touranji, H.A. (author) / El-Korchi, T. (author)
Cement and Concrete Research ; 25 ; 1591-1602
1995
12 Seiten, 4 Bilder, 2 Tabellen, 29 Quellen
Article (Journal)
English
Zement , Mörtel , Siliciumoxid , Gehalt (Zusammensetzung) , Entmischung , Wechselwirkung , Druckfestigkeit , Korngröße , Dichte (Masse) , Messung , Standardabweichung , Statistik , Berechnung , Siliciumdioxid , Korrelation , Dichte , Berechnungsmethode , Weichmacher , Verminderung , Probenpräparation , Wasser-Zement-Wert , Streuung (Messwert) , Theorie-Experiment-Vergleich
The Influence of Silica Fume on the Compressive Strength of Cement Paste and Mortar
| British Library Online Contents | 1995
The Influence of Silica Fume on the Compressive Strength of Cement Paste and Mortar
| Online Contents | 1995
89-M42 Role of Silica Fume in Compressive Strength of Cement Paste, Mortar, and Concrete
| British Library Online Contents | 1993
89-M42 Role of Silica Fume in Compressive Strength of Cement Paste, Mortar, and Concrete
| Online Contents | 1993
89-M42 Role of Silica Fume in Compressive Strength of Cement Paste, Mortar, and Concrete
| Online Contents | 1993