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Frischbetondruck bei Verwendung von Selbstverdichtendem Beton
Authors:Carl‐Alexander Graubner  Tilo Proske
Abstract:Formwork Pressure Asserted by Self‐Compacting‐Concrete On the basis of tests on the friction and deformation behaviour of Self‐Compacting Concrete (SCC) in the fresh state, analytical models to calculate the formwork pressure on vertical formwork were developed. One model, which is based on silo theory and takes into account time dependent material parameters of fresh concrete, as well as a simplified model makes it possible to estimate the fresh concrete pressure during setting. A proposal for the design of formwork, based on semi‐probabilistic safety concept was developed. It was noted that even for SCC, in the design of formwork and scaffolding the load is often less than hydrostatic concrete pressure. The pressure can be best controlled on site by limiting the casting rate.
Keywords:Selbstverdichtender Beton  Reibungsmessungen  rheologische Eigenschaften  Seitendruckversuche  Bauausfü  hrung  Baustoffe  Berechnungs‐ und Bemessungsverfahren
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