CRACK WIDTH CONTROL – VERIFICATION OF THE DEFORMATION COMPATIBILITY VS. COVERING THE CRACKING FORCE

Author(s): Dirk Schlicke, Nguyen Viet Tue
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-171-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 563-572
Total Pages: 10
Language : English

Abstract: According to the current design code the crack width control is provided by a minimum
reinforcement covering any restraints as well as crack width verifications for the decisive load
combinations, whereas the interaction of both is generally not pursued further. Almost all
guidelines advise to control the crack width due to restraint by a minimum reinforcement
taking up the cracking force respectively the cracking moment, e.g. [1] and [2]. However,
such procedure neglects the deformation compatibility along the member length and the
interaction of restraints and external loads is not pursued any further. Altogether, this can
either lead to structural damage - mainly recognizable in form of leaking cracks in watertight
constructions - or to inefficient constructions. A mechanical consistent crack width control
under consideration of the real member behaviour can solely be achieved by the verification
of the deformation compatibility since deformation compatibility is also the reason for
restraints in the first place. Such procedure is shown for instance in [3] for the particular case
of early age effects.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00