TY - JOUR
T1 - Shear strengthening of RC beams with thin panels of mortar reinforced with recycled steel fibres
AU - Lourenço, Lúcio
AU - Zamanzadeh, Ziaaddin
AU - Barros, Joaquim A.O.
AU - Rezazadeh, Mohammadali
PY - 2018/9/1
Y1 - 2018/9/1
N2 - The use of thin cement based panels reinforced with relatively high content of Recycled Steel Fibres (RSF) for the shear strengthening of Reinforced Concrete (RC) beams is investigated in the present work. The mechanical properties of this Recycled Steel Fibre Reinforced Mortar (RSFRM) are characterised. The panels are produced by using a mixing technique similar to the one used in the slurry infiltrated fibre concrete technology. Then, their potentialities as a shear strengthening solution for RC beams deficiently reinforced in shear are investigated by performing three-point bending tests with RC beams of “I” shape cross section. The RSFRM panels are applied in the lateral faces of the beams by using the two following strategies: (1) bonded to the concrete substrate by applying exclusively epoxy adhesive; and (2) besides epoxy adhesive, mechanical fasteners are applied. The applicability of an analytical approach for estimating the contribution of RSFRM panels for the shear resistance of RC beams is assessed, and a design example is presented.
AB - The use of thin cement based panels reinforced with relatively high content of Recycled Steel Fibres (RSF) for the shear strengthening of Reinforced Concrete (RC) beams is investigated in the present work. The mechanical properties of this Recycled Steel Fibre Reinforced Mortar (RSFRM) are characterised. The panels are produced by using a mixing technique similar to the one used in the slurry infiltrated fibre concrete technology. Then, their potentialities as a shear strengthening solution for RC beams deficiently reinforced in shear are investigated by performing three-point bending tests with RC beams of “I” shape cross section. The RSFRM panels are applied in the lateral faces of the beams by using the two following strategies: (1) bonded to the concrete substrate by applying exclusively epoxy adhesive; and (2) besides epoxy adhesive, mechanical fasteners are applied. The applicability of an analytical approach for estimating the contribution of RSFRM panels for the shear resistance of RC beams is assessed, and a design example is presented.
KW - Analytical approach
KW - Cement based mortar
KW - FEM analysis
KW - Numerical simulation
KW - Recycled steel fibre
KW - Shear strengthening
U2 - 10.1016/j.jclepro.2018.05.096
DO - 10.1016/j.jclepro.2018.05.096
M3 - Article
AN - SCOPUS:85051394186
VL - 194
SP - 112
EP - 126
JO - Journal of Cleaner Production
JF - Journal of Cleaner Production
SN - 0959-6526
ER -
