Fiber Concrete Properties Control by Fibers Motion Investigation in Fresh Concrete during Casting

Proceedings of the 8th International DAAAM Baltic Conference "Industrial Engineering" 2012
Andrejs Krasņikovs, Vitālijs Zaharevskis, Olga Kononova, Vitālijs Lūsis, Angelīna Vagele, Jevgeņijs Zaļeskis

Short steel fiber concrete (SF) tensile strength is dependent on fibers distributions and orientations inside the material. In the present investigation numerically are simulating (using FEM) all fibers motions in fresh concrete during the process of filling the mold by SF. Flow modeling was executed for Newton’s and viscous Bingham’s liquids. Potential weakest internal zone (is the place with undesirable fibers orientations and spatial distributions –the place of future macro-crack), from the point of view future load bearing capacity under four point bending conditions was recognized. Structural SF fracture model was created; material fracture process was modeled, based on single fiber pull-out laws, which were determined experimentally (for straight fibers, fibers with end hooks, and corrugated fibers).

Atslēgas vārdi
fibers, orientation, high strength concrete, flow
Hipersaite
http://innomet.ttu.ee/daaam/proceedings/pdf/krasnikovs.pdf

Krasņikovs, A., Zaharevskis, V., Kononova, O., Lūsis, V., Vagele, A., Zaļeskis, J. Fiber Concrete Properties Control by Fibers Motion Investigation in Fresh Concrete during Casting. No: Proceedings of the 8th International DAAAM Baltic Conference "Industrial Engineering", Igaunija, Tallinn, 19.-21. aprīlis, 2012. Tallinn: Tallinn University of Technology, 2012, 657.-662.lpp. ISBN 978-9949-23-265-9.

Publikācijas valoda
English (en)