Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Interaction of restraint and autogenous shrinkage in HPC
Present monitoring results were controlled with a simplified numerical model. Two bridges built of HPC in Saxony have been monitored. The first bridge project from 1999 has been monitored especially under the aspects of durability of HPC bridge decks without sealing. This aspect is important to improve the high durability of HPC. The monitoring at the second bridge started 2001 and has been installed not only to observe the long term deformation of HPC, but also to control the deformations of the bridge deck right from the beginning of concreting. This HPC bridge was the first five field full section girder of Germany. A numerical model was developed to get more information about the restraint at the coupling joint. In focus was the interaction of physical behaviour of concrete in young age and the temperature induced restraint. Prevention from concrete cracking is necessary to guarantee high durability. Special attention is drawn on the autogenous shrinkage behaviour of HPC: This paper will open up new perspectives for a better structural design without cracking. Parameter studies with the numerical model are conducted.
Interaction of restraint and autogenous shrinkage in HPC
Present monitoring results were controlled with a simplified numerical model. Two bridges built of HPC in Saxony have been monitored. The first bridge project from 1999 has been monitored especially under the aspects of durability of HPC bridge decks without sealing. This aspect is important to improve the high durability of HPC. The monitoring at the second bridge started 2001 and has been installed not only to observe the long term deformation of HPC, but also to control the deformations of the bridge deck right from the beginning of concreting. This HPC bridge was the first five field full section girder of Germany. A numerical model was developed to get more information about the restraint at the coupling joint. In focus was the interaction of physical behaviour of concrete in young age and the temperature induced restraint. Prevention from concrete cracking is necessary to guarantee high durability. Special attention is drawn on the autogenous shrinkage behaviour of HPC: This paper will open up new perspectives for a better structural design without cracking. Parameter studies with the numerical model are conducted.
Interaction of restraint and autogenous shrinkage in HPC
Dietz, Jörg (Autor:in) / Tue, Nguyen Viet (Autor:in)
2004
13 Seiten, 15 Bilder, 9 Quellen
Aufsatz (Konferenz)
Englisch
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