Effects of hybrid fibers on the development of high volume fly ash cement composite

Afroz, Mahzabin; Venkatesan, Srikanth; Patnaikuni, Indubhushan

doi:10.1016/j.conbuildmat.2019.04.083

Cited by 47 publications

(22 citation statements)

References 32 publications

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“…The conjunctive use of waste mineral admixtures with fibers has been widely studied on the properties of NC [31][32][33][34][35][36][37][38][39][40][41][42]. Coupling benefits of fibers and fly ash helps in lessening WA capacity of fibrous concretes, improvement in workability, etc.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume

Ali

Ahmed

Qureshi³

et al. 2020

Materials

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Portland cement concrete is fragile in tension and it has numerous negative impacts on the environment. To deal with these issues, both fiber reinforcement and recycled materials can be utilized to manufacture sustainable and ductile concrete. In this study, the synergistic effects of high-performance mineral admixture silica fume and glass fiber reinforcement were investigated on the hardened properties of RC. For this purpose, two concrete mix families, namely, NC and RC were prepared. To understand the benefits of synergistic utilization of glass fiber and silica fume, in both NC and RC, 0.5% glass fiber was incorporated with three different levels of silica fume. i.e., 0%, 5%, and 10%. Both strength and permeability-related durability properties were investigated. Results revealed that combined incorporation of 0.5% fiber and 10% silica fume can help in the production of RC having better mechanical and durability performance compared to reference “NC”. Simultaneous incorporation of silica fume and glass fiber produces a combined effect greater than their individual effects on both mechanical and permeability properties of concrete. Silica fume plays a very dominant and positive role in the development of CS, WA, and CIPR of RC, whereas glass fiber plays a vital role in upgrading STS and FS of RC and whereas, with the addition of 0.5% glass fiber, RC can yield 8–9 times higher flexural toughness than that of the plain NC.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume

Ali

Ahmed

Qureshi³

et al. 2020

Materials

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“…Waste glass powder(WGP), steel slag(SG) and Silica fume(SF) are non-biodegradable materials and available as waste materials [17][18][19]. Utilization these materials with cement can improve mortar or/and concrete workability, early and long term strength and long term durability [20][21][22]. Phys-ical properties and chemical composition of these materials have a significant roleon the properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

“…Several researchers [22,27] have focused on the use of SG with cement to improve the density ,durability and strength of concrete at later ages. Many researchers [28][29][30][31][32] have studied the properties of mortar or/and concrete prepared from blended cement with supplementary cementitious materials (SCMs).…”

Section: Introductionmentioning

confidence: 99%

“…The incorporation of the fibers in cementitious matrix mainly improves tensile, flexural, impact strength and flexural toughness [40][41][42]. Industrial and natural fibers have been studied by many researchers [43][44][45]. Utilization of natural ,renewable and low cost fibers instead of industrial and high cost fibers has resulted in many advantages such as reducing Carbon footprint of construction industry, reducing of raw materials consumption and economy [46].…”

Section: Introductionmentioning

confidence: 99%

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Behavior of non-reinforced and reinforced green mortar with fibers

Dawood

Abdullah

2020

Open Engineering

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The behavior of non-reinforced green mortar with fibers has been observed. Different green mortar mixes have been prepared using different percentages of waste glass powder (WGP), steel slag (SG) and silica fume (SF).The properties of flow, density, ultrasonic pulse velocity (UPV), compressive and flexural strengths have been tested for such green mortar in the first phase of the experimental work. The selected green mortar mix that gives good properties with the acceptable ranges of cement replacement by such cementitious materials has been utilized to achieve the second phase of the experimental work. Thus, the uses of human hair fibers, sisal fibers and stainless steel nails fibers in the form of individual and hybrid fibers system and testing for the same properties mentioned above have been performed. The third phase includes the cost estimation for the said mortar. Whereas, the last phase deals with analysis of the results using the integrated AHP and TOPSIS method for selection the best performance of the green mortar. The results of mono sisal fiber, human hair fiber and stainless nails fiber by 0.75, 0.75 and 2% of volume fraction respectively, exhibited the highest increase in compressive strength, flexural strength, UPV and density compared with other percentages.

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“…The influence of additions is pertinent, as it changes the interfacial transition zone (ITZ), contributing to fibre bonding in the matrix [16,17]. The use of hybrid fibres has been promising because it combines different fibre properties, generating an optimized synergistic effect [18,19,20]. The distribution and orientation of fibres in the matrix has been shown to be an influential factor in composite behaviour, so it has been the focus of recent studies [21,22].…”

Section: Introductionmentioning

confidence: 99%

Thin Slabs Made of High-Performance Steel Fibre-Reinforced Cementitious Composite: Mechanical Behaviour, Statistical Analysis and Microstructural Investigation

et al. 2019

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The present study evaluated the mechanical behaviour of thin high-performance cementitious composite slabs reinforced with short steel fibres. For this purpose, slabs with 1%, 3% and 5% vol. of steel fibres were moulded using the slurry infiltration method. Fibres concentrated in the region subjected to traction during bending stresses. After curing for 28 days, all slabs underwent flexural testing. The slabs with 5% fibre showed significantly higher flexural strength, deflection and toughness compared to those of the control group without reinforcement. The dense fibre distribution, resulting from the production process, led to profiles with multiple random cracks in the region of failure of the slabs as the fibre content increased. The results of the statistical analysis showed the intensity of the correlation between the variables and revealed that the increase of the fibre content significantly influenced the parameters of mechanical behaviour (load, flexural strength, deflection, toughness and toughness factor). Images obtained by optical microscopy aided in understanding the fibre–matrix interface, showing the bonding surface between the constituents of the composite.

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Effects of hybrid fibers on the development of high volume fly ash cement composite

Cited by 47 publications

References 32 publications

Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume

Enhancing the Hardened Properties of Recycled Concrete (RC) through Synergistic Incorporation of Fiber Reinforcement and Silica Fume

Behavior of non-reinforced and reinforced green mortar with fibers

Thin Slabs Made of High-Performance Steel Fibre-Reinforced Cementitious Composite: Mechanical Behaviour, Statistical Analysis and Microstructural Investigation

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