Engineering properties of steel fibre reinforced geopolymer concrete

Ganesan, N.; Indira, P. V.; Santhakumar, Anjana

doi:10.12989/acc2013.1.4.305

Cited by 66 publications

(31 citation statements)

References 12 publications

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“…When fiber is induced, the elastic modulus can be affected mainly based on the fiber stiffness and porosity of the composite. For example, when a small quantity of steel fiber was used, up to 1 vol.%, the elastic modulus was slightly increased, which is correlated to the considerably high stiffness of steel and its strong fiber-binder interaction [114,167]. However, using up to 2 vol.% spiral steel and PP fibers, it was shown that the elastic modulus of steel fiber reinforced geopolymer concrete can be reduced or increased by a range of -18% to +16% of the plain sample.…”

Section: Elastic Modulus and Poisson's Ratiomentioning

confidence: 99%

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Fiber-reinforced geopolymer composites: A review

Ranjbar¹,

Zhang

2020

Cement and Concrete Composites

439

220

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There is a burgeoning interest in the development of geopolymers as sustainable construction materials and incombustible inorganic polymers. However, geopolymers show high quasi-brittle behavior. To overcome such weakness, hundreds of research have been focused on development, characterization, and implementation of fiber reinforced geopolymers for a wide range of applications. This paper discusses the rapidly developing state-of-the-art of fiber-reinforced geopolymer composites, focusing on material and geometrical properties of construction fibers, and underlying mechanisms on fiber-binder interaction at fresh and hardened states, mechanical properties, toughening mechanisms, thermal characteristics, and environmental durability. It is intended to build a strong conceptual and technical background for what is currently understood on fiber reinforced geopolymers by tying the subject together with knowns for other similar cementitious composites rather than a historical report of literature.

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Section: Elastic Modulus and Poisson's Ratiomentioning

confidence: 99%

“…9. a) Elastic modulus and b) Poisson's ratio to the compressive strength of geopolymer composites. Adapted from Refs [74,114,130,136,138,167,197,[205][206][207][208][209]…”

mentioning

confidence: 99%

Fiber-reinforced geopolymer composites: A review

Ranjbar¹,

Zhang

2020

Cement and Concrete Composites

439

220

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“…The measured value of Poisson ratio ranged between 0.200 and 0.189. Plain concrete had a Poisson ratio of 0.1995, for normal strength concrete, a value of 0.2 is usually adopted [42]. While SFRC shows a slight decrease in Poisson ratio as the fiber content increased.…”

Section: Fig (9) Poisson Ratio Of Sfrcmentioning

confidence: 99%

The Effect of Specimen Shape on the Mechanical Properties of Sisal Fiber-Reinforced Concrete

Okeola¹,

Abuodha²,

Mwero³

2018

TOCIEJ

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Introduction: Fiber reinforced concrete is becoming popular in improving the quasi-brittle failure of concrete. Natural fibers such as sisal holds great promise in this regard. It has amazing tensile strength and is renewable. This paper presents the result of an investigation carried out on the effect of sisal fiber on the compressive strength, Split tensile strength, failure mode and Poisson ratio of Sisal Fiber-Reinforced Concrete (SFRC). Methods: A mix proportion of 1:1.92:3.68 and w/c ratio of 0.47 for a target compressive strength of 35 MPa was used. Sisal fiber was added at percentages of 0.5%, 1.0%, 1.5%, and 2.0% by weight of cement. The effect of specimen shape on the compressive strength of sisal fiber-reinforced concrete (SFRC) was reported. The compressive strength of cube (150mm X 150mm) and cylinder (150mm diameter and 300mm height) specimen was determined at 7 and 28 days, while Split tensile strength and Poisson ratio were obtained using cylindrical specimen (150mm diameter and 300mm height). Results and Conclusion: The result shows that the addition of sisal fiber slightly reduces the compressive strength of concrete, increases its split tensile strength up to 47.167% of the control specimen, arrests crack propagation and reduces its Poisson ratio. The correlation between the compressive strength of cylindrical and cube specimen was established with a ratio ranging between 0.82 - 0.73. The difference in the compressive strength was found to increase with rise in the percentages of sisal fiber. Based on the ratio and mechanical properties, 1.0% sisal fiber content was recommended as the optimum for reinforcing concrete.

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“…In a hybrid fibre combination, the microfibres bridge the microcracks, whereas the macrofibres are more efficient in controlling the development of macrocracks in the concrete [14][15][16][17]. Geopolymer behaves comparably to conventional cement binders; hence the hybrid fibres can also be incorporated in geopolymer concrete to improve the mechanical properties [18][19][20][21][22][23]. Many researchers carried out many investigations on the properties of fibre reinforced unary and binary blend geopolymer concrete in the past [24,25].…”

Section: Introductionmentioning

confidence: 99%

Engineering Properties of Hybrid Fibre Reinforced Ternary Blend Geopolymer Concrete

2021

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The primary aim of this research is to find an alternative for Portland cement using inorganic geopolymers. This study investigated the effect of steel and polypropylene fibres hybridisation on ternary blend geopolymer concrete (TGPC) engineering properties using fly ash, ground granulated blast furnace slag (GGBS) and metakaolin as the source materials. The properties like compressive strength, splitting tensile strength, flexural strength and modulus of elasticity of ternary blend geopolymer concrete. The standard tests were conducted on TGPC with steel fibres, polypropylene fibres and a combination of steel and polypropylene fibres in hybrid form. A total number of 45 specimens were tested and compared to determine each property. The grade of concrete considered was M55. The variables studied were the volume fraction of fibres, viz. steel fibres (0%, 0.5% and 1%) and polypropylene fibres (0%, 0.1%, 0.15%, 0.2% and 0.25%). The experimental results reveal that the addition of fibres in a hybrid form enhances the mechanical properties of TGPC. The increase in the compressive strength was nominal, and a significant improvement was observed in splitting tensile strength, flexural strength, and modulus of elasticity. Also, an attempt to obtain the relation between the different engineering properties was made with different volume fractions of fibre.

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Engineering properties of steel fibre reinforced geopolymer concrete

Cited by 66 publications

References 12 publications

Fiber-reinforced geopolymer composites: A review

Fiber-reinforced geopolymer composites: A review

The Effect of Specimen Shape on the Mechanical Properties of Sisal Fiber-Reinforced Concrete

Engineering Properties of Hybrid Fibre Reinforced Ternary Blend Geopolymer Concrete

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