Crack width control: verification of the deformation compatibility vs. covering the cracking force

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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.
Originalspracheenglisch
TitelProceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering 2016
UntertitelService Life of Cement-Based Materials and Structures
ErscheinungsortLyngby
Seiten563-572
Seitenumfang10
Band1&2
ISBN (elektronisch)978-2-35158-173-5
PublikationsstatusVeröffentlicht - 22 Aug 2016
VeranstaltungInternational RILEM Conference on Materials, Systems and Structures in Civil Engineering - DTU , Lyngby, Dänemark
Dauer: 22 Aug 201624 Aug 2016

Konferenz

KonferenzInternational RILEM Conference on Materials, Systems and Structures in Civil Engineering
LandDänemark
OrtLyngby
Zeitraum22/08/1624/08/16

Fields of Expertise

  • Sustainable Systems

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