4 research outputs found
Appraisal of MC2010 shear resistance approaches coupled with a residual flexural strength prediction model
In the present work the predictive performance of the two approaches proposed by
Model Code 2010 for the evaluation of the shear capacity of fiber reinforced concrete (FRC)
elements flexurally reinforced with conventional steel bars is assessed considering a database
(DBs) constituted by 80 FRC beams do not including conventional transverse reinforcements.
The accuracy of these shear models is evaluated by statistical analysis of the prediction ratio
between the experimental and estimated shear capacity of the beams of the DBs, and applying
the Demerit Points Classification approach for further information about the reliability of the
two approaches in design context. Due to the absence of the post-cracking experimental
characterization of the FRC used in several beams considered in the DBs, an approach was
developed for estimating the residual flexural strength parameters from the most relevant known
variables of steel fiber reinforcement mechanisms for concrete, namely the fiber volume and
aspect ratio, and the concrete compressive and tensile strength. The residual flexural strength
prediction model is assessed and its influence on the performance of the shear resistance models
is evaluatedSFRH/BDE/96381/2013 co-funded by CiviTest -
Pesquisa de Novos Materiais para a Engenharia Civil, Lda. and by FCT - Portuguese Foundation for
Science and Technology. The authors also acknowledge the support provided by the FCT project PTDC/ECM-EST/2635/201
Punching shear strength of steel fiber reinforced concrete slabs
Journal of Materials in Civil Engineering62240-253JMCE
Creep and shrinkage deflections of RC beams with steel fibers
Journal of Materials in Civil Engineering64474-494JMCE
Impact resistant behaviour of RC slab strengthened with FRP sheet
Materials and Structures/Materiaux et Constructions44101855-1864MAST