Abstract
Use of hybrid fibre composites that exploit the synergistic effect of nano- and micro-additives can potentially lead to significant improvements in the toughness and mechanical properties of fibre reinforced cementitious materials. In this study, the mechanical properties of two types of novel cementitious composite (Carbon Nano-Fibre (CNF) Composites, and Hybrid-Fibre Composites) at various curing ages have been evaluated, along with their microstructure. Experimental results show a positive impact of nano-fibres on the mechanical performance of the cementitious composites: improvements of 40% in flexural strength, 45% in tensile strength, and 85% in toughness were observed when a low mass % (0.025%) of CNFs was combined with steel fibres. SEM observations revealed that reinforcement at the nanoscale prevented nano-crack development within the composites, with a greater amount of energy required to initiate and propagate cracks and cause material failure.
| Original language | English |
|---|---|
| Pages (from-to) | 145-156 |
| Number of pages | 12 |
| Journal | Composite Structures |
| Volume | 178 |
| DOIs | |
| Publication status | Published - Oct 15 2017 |
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Keywords
- Carbon fibres
- Hybrid composites
- Nanocomposites
- Reinforced concretes
ASJC Scopus subject areas
- Ceramics and Composites
- Civil and Structural Engineering
Cite this
Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres. / Alrekabi, S.; Cundy, A. B.; Lampropoulos, A.; Whitby, R. L.D.; Savina, I.
In: Composite Structures, Vol. 178, 15.10.2017, p. 145-156.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mechanical performance of novel cement-based composites prepared with nano-fibres, and hybrid nano- and micro-fibres
AU - Alrekabi, S.
AU - Cundy, A. B.
AU - Lampropoulos, A.
AU - Whitby, R. L.D.
AU - Savina, I.
PY - 2017/10/15
Y1 - 2017/10/15
N2 - Use of hybrid fibre composites that exploit the synergistic effect of nano- and micro-additives can potentially lead to significant improvements in the toughness and mechanical properties of fibre reinforced cementitious materials. In this study, the mechanical properties of two types of novel cementitious composite (Carbon Nano-Fibre (CNF) Composites, and Hybrid-Fibre Composites) at various curing ages have been evaluated, along with their microstructure. Experimental results show a positive impact of nano-fibres on the mechanical performance of the cementitious composites: improvements of 40% in flexural strength, 45% in tensile strength, and 85% in toughness were observed when a low mass % (0.025%) of CNFs was combined with steel fibres. SEM observations revealed that reinforcement at the nanoscale prevented nano-crack development within the composites, with a greater amount of energy required to initiate and propagate cracks and cause material failure.
AB - Use of hybrid fibre composites that exploit the synergistic effect of nano- and micro-additives can potentially lead to significant improvements in the toughness and mechanical properties of fibre reinforced cementitious materials. In this study, the mechanical properties of two types of novel cementitious composite (Carbon Nano-Fibre (CNF) Composites, and Hybrid-Fibre Composites) at various curing ages have been evaluated, along with their microstructure. Experimental results show a positive impact of nano-fibres on the mechanical performance of the cementitious composites: improvements of 40% in flexural strength, 45% in tensile strength, and 85% in toughness were observed when a low mass % (0.025%) of CNFs was combined with steel fibres. SEM observations revealed that reinforcement at the nanoscale prevented nano-crack development within the composites, with a greater amount of energy required to initiate and propagate cracks and cause material failure.
KW - Carbon fibres
KW - Hybrid composites
KW - Nanocomposites
KW - Reinforced concretes
UR - http://www.scopus.com/inward/record.url?scp=85023608465&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85023608465&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2017.06.045
DO - 10.1016/j.compstruct.2017.06.045
M3 - Article
AN - SCOPUS:85023608465
VL - 178
SP - 145
EP - 156
JO - Composite Structures
JF - Composite Structures
SN - 0263-8223
ER -