Flexural behavior of glass fiber-reinforced recycled aggregate concrete and its impact on the cost and carbon footprint of concrete pavement

Ali, Babar; Qureshi, Liaqat Ali; Khan, Shafqat Ullah

doi:10.1016/j.conbuildmat.2020.120820

Cited by 63 publications

(20 citation statements)

References 60 publications

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“…A maximum increase in splitting tensile strength of 31.2% was observed at the age of 28 days as compared to the control sample with the addition of 4% of GF in the concrete mix. This is because of the utilization of the maximum tensile strength capacity and bridging effect of GF under the splitting tensile load [57,90]. Similar trend and behavior of splitting tensile strength was also reported by previous research studies by using glass ber, steel ber and carbon ber etc.…”

Section: Split Tensile Strength Energy Absorption and Toughness Indicessupporting

confidence: 83%

“…Similar trend and behavior of exural strength was also reported by previous research studies by using glass ber, steel ber and carbon ber etc. [57,90,91]. increased by 7% 14%, 19%, and 22% respectively, in comparison with the CS.…”

Section: Flexural Strength Energy Absorption and Toughness Indicesmentioning

confidence: 90%

“…Similar trend and behavior of splitting tensile strength was also reported by previous research studies by using glass ber, steel ber and carbon ber etc. [90,91,92]. The splitting tensile strength (STS) for 28 days was calculated from the maximum load taken by the specimen during the splitting tensile strength test [78].…”

Section: Split Tensile Strength Energy Absorption and Toughness Indicesmentioning

confidence: 99%

“…Similar fashion of increasing trend and behavior of splitting tensile strength, toughness indices and energy absorption were reported by previous research studies by using glass ber, steel ber and carbon ber etc. [57,90,93].…”

Section: Split Tensile Strength Energy Absorption and Toughness Indicesmentioning

confidence: 99%

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Effect of Glass Fibers on The Mechanical Behavior As Well As Energy Absorption Capacity and Toughness Indices of Concrete Bridge Decks.

Jan

Zhang

Khan

et al. 2021

Preprint

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In this study, the incorporation of glass fibers in concrete bridge decks has been studied for improving its mechanical properties as well as energy absorption capacity and toughness indices. The mix proportion of 1:3:2 (cement:sand:aggregate) was selected having water-cement ratio of 0.71. For the manufacturing of glass fiber reinforced concrete (GFRC), the glass fibers (2-inch) were incorporated at a percentage level of 1%, 2%, 3% and 4% by weight of cement in concrete mixes. The findings reveal that the split-tensile and flexural strength of GFRC increases at all the percentage levels, however, the compressive strength of the blended mixes get reduced by increasing the dosage of glass fibers in the concrete. Besides, the energy absorption and toughness indices are also studied for different types of loadings (i.e. compressive, splitting-tensile and flexural loadings) up to a percentage level of 4%. The findings reveal that the split-tensile and flexural energy absorption was increased with the increase in the dosage of glass fibers in comparison with the conventional concrete mixes, however, the compressive energy absorption of the blended mixes get reduced by increasing the dosage of glass fibers in the concrete. Whereas, the toughness indices for compressive, spilt-tensile and flexure was increased while increasing the percentage of glass fibers as compared to the conventional concrete. Among the different percentages of glass fibers, its 4% addition gives better results as compared to 1%, 2% and 3%. Hence, the 4% of GF can be suggested to be the optimum percentage of the fibers for the selected mix-design in controlling the resistance of concrete in the bridge decks. Although, the energy absorption of GFRC is lesser in comparison with the toughness indices, GFRC are appropriate for enhancing ductility and resistance against loadings in concrete bridge decks.

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Section: Split Tensile Strength Energy Absorption and Toughness Indicessupporting

confidence: 83%

Section: Flexural Strength Energy Absorption and Toughness Indicesmentioning

confidence: 90%

Section: Split Tensile Strength Energy Absorption and Toughness Indicesmentioning

confidence: 99%

Section: Split Tensile Strength Energy Absorption and Toughness Indicesmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Glass Fibers on The Mechanical Behavior As Well As Energy Absorption Capacity and Toughness Indices of Concrete Bridge Decks.

Jan

Zhang

Khan

et al. 2021

Preprint

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show abstract

“…PCC has low energy absorption capacity (or toughness) under both tensile and compressive loadings [ 5 , 6 ]. It undergoes a sudden failure after carrying the load beyond its peak capacity and it has very low residual strength (almost negligible compared to fiber-reinforced concrete) [ 7 ]. Mechanical performance of PCC undergoes significant degradation with time when subjected to environmental stresses (freeze-thaw) [ 8 ] and weathering actions of water and acid attack [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Varying Steel Fiber Content on Strength and Permeability Characteristics of High Strength Concrete with Micro Silica

et al. 2020

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For the efficient and durable design of concrete, the role of fiber-reinforcements with mineral admixtures needs to be properly investigated considering various factors such as contents of fibers and potential supplementary cementitious material. Interactive effects of fibers and mineral admixtures are also needed to be appropriately studied. In this paper, properties of concrete were investigated with individual and combined incorporation of steel fiber (SF) and micro-silica (MS). SF was used at six different levels i.e., low fiber volume (0.05% and 0.1%), medium fiber volume (0.25% and 0.5%) and high fiber volume (1% and 2%). Each volume fraction of SF was investigated with 0%, 5% and 10% MS as by volume of binder. All concrete mixtures were assessed based on the results of important mechanical and permeability tests. The results revealed that varying fiber dosage showed mixed effects on the compressive (compressive strength and elastic modulus) and permeability (water absorption and chloride ion penetration) properties of concrete. Generally, low to medium volume fractions of fibers were useful in advancing the compressive strength and elastic modulus of concrete, whereas high fiber fractions showed detrimental effects on compressive strength and permeability resistance. The addition of MS with SF is not only beneficial to boost the strength properties, but it also improves the interaction between fibers and binder matrix. MS minimizes the negative effects of high fiber doses on the properties of concrete.

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Mechanical performance and environmental impact of normal strength concrete incorporating various levels of coconut fiber and recycled aggregates

Shah¹,

Amir

Ali

et al. 2022

Environ Sci Pollut Res

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Flexural behavior of glass fiber-reinforced recycled aggregate concrete and its impact on the cost and carbon footprint of concrete pavement

Cited by 63 publications

References 60 publications

Effect of Glass Fibers on The Mechanical Behavior As Well As Energy Absorption Capacity and Toughness Indices of Concrete Bridge Decks.

Effect of Glass Fibers on The Mechanical Behavior As Well As Energy Absorption Capacity and Toughness Indices of Concrete Bridge Decks.

Effect of Varying Steel Fiber Content on Strength and Permeability Characteristics of High Strength Concrete with Micro Silica

Mechanical performance and environmental impact of normal strength concrete incorporating various levels of coconut fiber and recycled aggregates

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