A step towards durable, ductile and sustainable concrete: Simultaneous incorporation of recycled aggregates, glass fiber and fly ash

Ali, Babar; Qureshi, Liaqat Ali; Shah, Syed Haroon Ali; Rehman, Safi Ur; Hussain, Iqrar; Iqbal, M.J.

doi:10.1016/j.conbuildmat.2020.118980

Cited by 114 publications

(68 citation statements)

References 48 publications

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“…For samples containing 600, 1200, and 1800 g/m 3 of glass fibers, an increase by 13.2%, 25.1%, and 29.9% in bending strength was obtained, see Table 7 . The same trend was already reported by Ali et al [ 66 ] and Sanjeev and Sai Nitesh [ 42 ], see green and pink line in Figure 9 . Sanjeev and Sai Nitesh [ 42 ] demonstrated that samples with the highest glass fiber content showed the highest flexure strength, with all the modifications having higher results than for base samples.…”

Section: Resultssupporting

confidence: 89%

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

et al. 2021

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The progressive increase in the amount of glass waste produced each year in the world made it necessary to start the search for new recycling methods. This work summarizes the experimental results of the study on mortar samples containing dispersed reinforcement in the form of glass fibers, fully made from melted glass waste (bottles). Mortar mixes were prepared according to a new, laboratory-calculated recipe containing glass fibers, granite as aggregate, polycarboxylate-based deflocculant and Portland cement (52.5 MPa). This experimental work involved three different contents (600, 1200, and 1800 g/m3) of recycled glass fibers. After 28 days, the mechanical properties such as compressive, flexural, and split tensile strength were characterized. Furthermore, the modulus of elasticity and Poisson coefficient were determined. The initial and final setting times, porosity, and pH of the blends were measured. Images of optical microscopy (OM) were taken. The addition of glass fibers improves the properties of mortar. The highest values of mechanical properties were obtained for concrete with the addition of 1800 g/m3 of glass fibers (31.5% increase in compressive strength, 29.9% increase in flexural strength, and 97.6% increase in split tensile strength compared to base sample).

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Section: Resultssupporting

confidence: 89%

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

et al. 2021

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“…RC owing to high CH content offers more potential for STS development with silica fume than NC. This is well established in literature that RC is befitted more than NC due to addition of pozzolanic materials than NC [11,62,72]. Owing to developments in microstructure, RC with 10% silica fume performed better than reference NC.…”

Section: Splitting Tensile Strength (Sts)mentioning

confidence: 57%

“…On the other hand, fiber-reinforced NC and RC showed 3-6% lesser CIPR than their corresponding plain mixes. Reduction in CIPR due to fiber addition can also be linked to the increased connectivity of pores along fiber filaments [72].…”

Section: Chloride Ion Penetration (Cip)mentioning

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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“…It can be ascribed to poor dispersion of fibers at a highvolume fraction. Like the normal [36] and high strength concretes [34,37] splitting tensile strength of RPC is the most positively affected mechanical property due to the addition of fiber.…”

Section: At Normal Temperaturementioning

confidence: 99%

Residual mechanical strength of glass fiber reinforced reactive powder concrete exposed to elevated temperatures

2020

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Reactive powder concrete (RPC) has a denser microstructure which makes it vulnerable to spalling when exposed to high temperatures. Extraordinary applications of RPC in structures requiring high strength and durability have drawn the attention to explore the behavior of RPC at high temperatures. This research work aims to study the effect of different dosages of glass fibers (GF) on the mechanical performance of RPC after exposure to high temperatures i.e. 200, 400, 600, and 800 °C. Three main mechanical properties were evaluated such as compressive strength, split tensile strength, and flexural strength. Experiments showed that spalling was significantly controlled using the studied dosages of GF i.e. 2-4%. Effect of dosage on residual mechanical properties varied with the changing temperature. Up to 400 °C, RPC with 3%GF showed maximum residual strength properties, whereas, at 600 and 800 °C, RPC with 4% showed maximum residual mechanical strength. The role of fibers in compressive strength was more useful above 400 °C, whereas, flexural strength and split tensile strength were benefited from GF addition at both normal and elevated temperatures.

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A step towards durable, ductile and sustainable concrete: Simultaneous incorporation of recycled aggregates, glass fiber and fly ash

Cited by 114 publications

References 48 publications

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

Mechanical and Material Properties of Mortar Reinforced with Glass Fiber: An Experimental Study

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

Residual mechanical strength of glass fiber reinforced reactive powder concrete exposed to elevated temperatures

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