Systematic Investigations with Restraining Frames for Reinforced Concrete

Author(s): Katrin Turner, Dirk Schlicke, Nguyen Viet Tue
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 2
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-200-8
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 579-584
Total Pages: 6
Language : English

Abstract: The Institute of Structural Concrete at Graz University of Technology developed restraining frames for the experimental simulation of the holistic restraint stress history and crack development in reinforced concrete members. The continuous investigation starts with a hardening-induced temperature and stress history. The temperature history is solely induced by the material behavior under a defined thermal condition. With respect to the developing mechanical properties the corresponding stress history purely results from the externally restrained deformations. After temperature equalization additional deformations which are typical for service life are superimposed. A special feature of the experiments is that they can be conducted beyond cracking.
The paper presents experimental findings from several runs of comparative long-term studies regarding the effectiveness of thermal insulation on lessening early restraint stresses as well as crack width development in service life.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00