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High reactive beta-dicalcium silicate for ultra high performance concrete
Belite rich cement has been widely recognized to be suitable for high flowing and ultra high performance concrete as well as for low heat concrete. The major problem with belite cement is that it reacts very slowly and gives very little strength during early hours of hydration. Therefore attempts have been made to prepare belite cement in such a way that it becomes highly reactive. Highly reactive beta-dicalcium silicate has been prepared at low temperature by using hydrothermal method. The material was characterized by different experimental techniques. The hydration studies were made by determining the non-evaporable water contents, free lime and specific surface area of the hydrated samples. X-ray diffraction and SEM studies on the hydrated samples were also made. The results showed that beta-dicalcium silicate prepared is highly reactive. Possible causes of high reactivity have been discussed. Fluidity measurements of the mortar made from highly reactive beta-dicalcium silicate in the presence of fly ash and polycarboxylate type superplasticizer have also been made.
High reactive beta-dicalcium silicate for ultra high performance concrete
Belite rich cement has been widely recognized to be suitable for high flowing and ultra high performance concrete as well as for low heat concrete. The major problem with belite cement is that it reacts very slowly and gives very little strength during early hours of hydration. Therefore attempts have been made to prepare belite cement in such a way that it becomes highly reactive. Highly reactive beta-dicalcium silicate has been prepared at low temperature by using hydrothermal method. The material was characterized by different experimental techniques. The hydration studies were made by determining the non-evaporable water contents, free lime and specific surface area of the hydrated samples. X-ray diffraction and SEM studies on the hydrated samples were also made. The results showed that beta-dicalcium silicate prepared is highly reactive. Possible causes of high reactivity have been discussed. Fluidity measurements of the mortar made from highly reactive beta-dicalcium silicate in the presence of fly ash and polycarboxylate type superplasticizer have also been made.
High reactive beta-dicalcium silicate for ultra high performance concrete
Singh, N.B. (Autor:in)
2004
12 Seiten, 7 Bilder, 2 Tabellen, 9 Quellen
Aufsatz (Konferenz)
Englisch
Highly reactive beta-Dicalcium silicate for ultra high performance concrete
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