The effect of NiTi shape memory alloy, polypropylene and steel fibres on the fresh and mechanical properties of self-compacting concrete

Research output: Contribution to journalArticle

Abstract

Self-compacting concrete (SCC) is the main cementitious material employed in modern constructions, because of its outstanding deformability and high resistance to segregation. In this study, a new nickel-titanium (NiTi) shape memory alloy (SMA) fibre was manufactured to investigate its effects on the fresh and mechanical properties of SMA fibre-reinforced SCC and comparing it with polypropylene (PP) fibre and steel fibre reinforced SCC. Fresh properties tests, including slump flow and J-ring, and mechanical properties tests, including compressive strength, splitting tensile strength, flexural strength and impact, were carried out. The SMA fibre-reinforced SCC displays outstanding fresh properties and ductile performance compared to the PP and steel fibre-reinforced SCC. This is because SMA fibres present outstanding ultimate tensile strength and superelastic characteristics. The combination of the advantages delays initial crack development and narrows the crack gap width, resulting in energy dissipation phenomena which enhance both ductile performance in mechanical experiments and dynamic resistance in impact loading.

Original languageEnglish
Pages (from-to)644-659
Number of pages16
JournalConstruction and Building Materials
Volume215
DOIs
Publication statusPublished - 10 Aug 2019

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Self compacting concrete
Steel fibers
Polypropylenes
Shape memory effect
Titanium
Nickel
Reinforced concrete
Mechanical properties
Fibers
Tensile strength
Cracks
Formability
Bending strength
Compressive strength
Energy dissipation
nitinol
Experiments

Cite this

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title = "The effect of NiTi shape memory alloy, polypropylene and steel fibres on the fresh and mechanical properties of self-compacting concrete",
abstract = "Self-compacting concrete (SCC) is the main cementitious material employed in modern constructions, because of its outstanding deformability and high resistance to segregation. In this study, a new nickel-titanium (NiTi) shape memory alloy (SMA) fibre was manufactured to investigate its effects on the fresh and mechanical properties of SMA fibre-reinforced SCC and comparing it with polypropylene (PP) fibre and steel fibre reinforced SCC. Fresh properties tests, including slump flow and J-ring, and mechanical properties tests, including compressive strength, splitting tensile strength, flexural strength and impact, were carried out. The SMA fibre-reinforced SCC displays outstanding fresh properties and ductile performance compared to the PP and steel fibre-reinforced SCC. This is because SMA fibres present outstanding ultimate tensile strength and superelastic characteristics. The combination of the advantages delays initial crack development and narrows the crack gap width, resulting in energy dissipation phenomena which enhance both ductile performance in mechanical experiments and dynamic resistance in impact loading.",
keywords = "Fibre-reinforced concrete, Fresh properties, Impact test, Mechanical properties, Polypropylene fibres, Self-compacting concrete, Shape memory alloy fibres, Steel fibres",
author = "Farhad Aslani and Yinong Liu and Yu Wang",
year = "2019",
month = "8",
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doi = "10.1016/j.conbuildmat.2019.04.207",
language = "English",
volume = "215",
pages = "644--659",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier",

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T1 - The effect of NiTi shape memory alloy, polypropylene and steel fibres on the fresh and mechanical properties of self-compacting concrete

AU - Aslani, Farhad

AU - Liu, Yinong

AU - Wang, Yu

PY - 2019/8/10

Y1 - 2019/8/10

N2 - Self-compacting concrete (SCC) is the main cementitious material employed in modern constructions, because of its outstanding deformability and high resistance to segregation. In this study, a new nickel-titanium (NiTi) shape memory alloy (SMA) fibre was manufactured to investigate its effects on the fresh and mechanical properties of SMA fibre-reinforced SCC and comparing it with polypropylene (PP) fibre and steel fibre reinforced SCC. Fresh properties tests, including slump flow and J-ring, and mechanical properties tests, including compressive strength, splitting tensile strength, flexural strength and impact, were carried out. The SMA fibre-reinforced SCC displays outstanding fresh properties and ductile performance compared to the PP and steel fibre-reinforced SCC. This is because SMA fibres present outstanding ultimate tensile strength and superelastic characteristics. The combination of the advantages delays initial crack development and narrows the crack gap width, resulting in energy dissipation phenomena which enhance both ductile performance in mechanical experiments and dynamic resistance in impact loading.

AB - Self-compacting concrete (SCC) is the main cementitious material employed in modern constructions, because of its outstanding deformability and high resistance to segregation. In this study, a new nickel-titanium (NiTi) shape memory alloy (SMA) fibre was manufactured to investigate its effects on the fresh and mechanical properties of SMA fibre-reinforced SCC and comparing it with polypropylene (PP) fibre and steel fibre reinforced SCC. Fresh properties tests, including slump flow and J-ring, and mechanical properties tests, including compressive strength, splitting tensile strength, flexural strength and impact, were carried out. The SMA fibre-reinforced SCC displays outstanding fresh properties and ductile performance compared to the PP and steel fibre-reinforced SCC. This is because SMA fibres present outstanding ultimate tensile strength and superelastic characteristics. The combination of the advantages delays initial crack development and narrows the crack gap width, resulting in energy dissipation phenomena which enhance both ductile performance in mechanical experiments and dynamic resistance in impact loading.

KW - Fibre-reinforced concrete

KW - Fresh properties

KW - Impact test

KW - Mechanical properties

KW - Polypropylene fibres

KW - Self-compacting concrete

KW - Shape memory alloy fibres

KW - Steel fibres

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U2 - 10.1016/j.conbuildmat.2019.04.207

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VL - 215

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EP - 659

JO - Construction and Building Materials

JF - Construction and Building Materials

SN - 0950-0618

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