TY - JOUR
T1 - Enhancement of fabric–mortar interfacial adhesion by particle decoration
T2 - insights from pull-off measurements
AU - Birenboim, Matan
AU - Alatawna, Amr
AU - Sripada, Raghu
AU - Nahum, Lior
AU - Cullari, Lucas Luciano
AU - Peled, Alva
AU - Regev, Oren
N1 - Funding Information:
This work was supported by the Israel Science Foundation (ISF) [Grant 1106/17] and the ReSHEALience project (Rethinking coastal defence and Green-energy Service infrastructures through enHancEd-durAbiLity high-performance cement-based materials), which received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 760824. The information and views set out in this publication do not necessarily reflect the official opinion of the European Commission.
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/12/1
Y1 - 2021/12/1
N2 - Polymer-impregnated carbon fabric is used as an alternative to metallic reinforcement bars in cementitious materials, which is then termed textile-reinforced concrete (TRC). In this study, the bond strength between the cement-based matrix and the fabric was enhanced by decorating the polymer (an epoxy) coating the carbon fabric with hydrophilic micron-size particles (cement or silica) or nanocarbons (functionalized carbon nanotubes or graphene oxide). Cement powder decoration led to a 25% increase in the bond strength (measured by a pull-off test) and a 30% improvement in the mechanical properties of the composite. At the micron scale, the decoration resulted in the formation of a 100-μm thick interlayer between the decorated fabric and the cement-based matrix. Unexpectedly, exposure of the cement-decorated samples to a NaCl environment (as in off-shore constructions) resulted in enhanced bond strength due to the growth of salt crystals at the fabric–matrix interface.
AB - Polymer-impregnated carbon fabric is used as an alternative to metallic reinforcement bars in cementitious materials, which is then termed textile-reinforced concrete (TRC). In this study, the bond strength between the cement-based matrix and the fabric was enhanced by decorating the polymer (an epoxy) coating the carbon fabric with hydrophilic micron-size particles (cement or silica) or nanocarbons (functionalized carbon nanotubes or graphene oxide). Cement powder decoration led to a 25% increase in the bond strength (measured by a pull-off test) and a 30% improvement in the mechanical properties of the composite. At the micron scale, the decoration resulted in the formation of a 100-μm thick interlayer between the decorated fabric and the cement-based matrix. Unexpectedly, exposure of the cement-decorated samples to a NaCl environment (as in off-shore constructions) resulted in enhanced bond strength due to the growth of salt crystals at the fabric–matrix interface.
KW - Adhesion
KW - Carbon fiber
KW - Surface treatments
KW - Textile-reinforce-concrete
UR - http://www.scopus.com/inward/record.url?scp=85117570267&partnerID=8YFLogxK
U2 - 10.1617/s11527-021-01789-5
DO - 10.1617/s11527-021-01789-5
M3 - Article
AN - SCOPUS:85117570267
SN - 1359-5997
VL - 54
JO - Materials and Structures/Materiaux et Constructions
JF - Materials and Structures/Materiaux et Constructions
IS - 6
M1 - 200
ER -