Fresh and hardened properties of recycled plastic fiber reinforced self-compacting concrete made with recycled concrete aggregate and fly ash, slag, silica fume

Dong, Chunru; Zhang, Qingyang; Chen, Chuan; Jiang, Tianxun; Guo, Zhanggen; Liu, Yi; Lin, Shanli

doi:10.1016/j.jobe.2022.105384

Cited by 21 publications

(11 citation statements)

References 55 publications

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“…Consequently, RFCA displays a higher capacity for water absorption. As a result, a considerable amount of internal water accumulates, forming a porous Ca(OH)2rich layer between the RFCA and cement pastes at the ITZ, increasing the presence of micropores and cracks within the ITZ and reducing its strength [19]. Furthermore, the hardening shrinkage of the cement paste causes internal tension within the ITZ, resulting in the separation of aggregates and cement paste.…”

Section: Microstructure Analysismentioning

confidence: 99%

“…The figure clearly illustrates PET fibres embedded in the cement mix and surrounded by hydration products. This not only prevents the separation of PETF-RFCA-SCC mixes and the formation of settlement fractures but also plays a synergistic role in bridging cracks, thereby enhancing the strength and toughness of RFCA-SCC mixes [19].…”

Section: Microstructure Analysismentioning

confidence: 99%

“…App Hajmohammadian et al [18] investigated the workability and mechanical characteristics of RAC reinforced with PP fibres, and the findings showed that introducing PP fibres reduced the workability of the concrete while simultaneously increasing both compressive and tensile strength. Dong et al [19] conducted a study on recycled plastic fibre-reinforced recycled selfcompacting concrete (RSCC) to examine its fresh and hardened properties. Toghroli et al [20] studied the effect of recycled concrete aggregate (RCA) and pozzolanic materials on the mechanical and permeability properties of fibre-reinforced concrete.…”

Section: Introductionmentioning

confidence: 99%

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Engineering properties of self-compacting concrete incorporating PET fibres and recycled fine concrete aggregates

Bayah,

Debieb,

Kadri

et al. 2024

Bud-Arch

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Concrete is currently the most frequently used material in the building sector due to its favourable properties. However, the proliferation of waste poses a significant environmental problem. Over the past three decades, researchers have explored the use of construction and demolition waste (CDW) as well as plastic waste as aggregates, binders, and fibres in construction materials. This approach has emerged as a notable solution to address environmental and economic challenges. The objective of this research is to assess the impact of polyethylene terephthalate fibres (PETF) on the behaviour of self-compacting concrete (SCC) with recycled fine concrete aggregates (RFCA). Natural fine aggregates (NFA) were used as a substitute for RFCA at different mass fractions (0–100%). Additionally, four volumetric fractions (Vf) of PETF (ranging from 0.3% to 1.2%) were added, and the findings revealed an improvement in the flexural strength and modulus of elasticity of the composite material obtained. However, as the Vf content of PET fibres and RFCA increased, the compressive strength decreased, negatively affecting water absorption by immersion and capillary water absorption. Using 100% RFCA and 1.2% PETF enhanced the modulus of elasticity and flexural strength of recycled self-compacting concrete (RSCC) by up to 25% and 9%, respectively.

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Section: Microstructure Analysismentioning

confidence: 99%

Section: Microstructure Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Engineering properties of self-compacting concrete incorporating PET fibres and recycled fine concrete aggregates

Bayah,

Debieb,

Kadri

et al. 2024

Bud-Arch

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“…Compared with adding GBFS alone, adding desulfurization gypsum (DG) and GBFS composite cementitious materials to cement can improve the chloride ion penetration resistance of cement-based materials [24,25]. Meanwhile, compared with single or double addition, adding FA, GBFS, and SF composite cementitious materials to cement has been reported to increase the compressive strength of cement-based materials [26]. Therefore, the addition of three or fewer ACMs has been investigated to improve the strength and durability of cement-based materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Performance Study of High-Strength and Corrosion-Resistant Cement-Based Materials Applied in Coastal Acid Rain Areas

Wang,

Zhang,

et al. 2024

Materials

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Investigations regarding the preparation and durability of cement-based materials applied in specific coastal acid rain environments are scarce, particularly those involving the addition of four auxiliary cementitious materials (ACMs) to cement for modification. To improve the durability of concrete structures in coastal acid rain areas, a systematic study was conducted regarding the preparation of high-strength and corrosion-resistant cement-based materials using ACM systems composed of fly ash (FA), granulated blast furnace slag (GBFS), silica fume (SF), and desulfurization gypsum (DG) instead of partial cement. Through an orthogonal experimental design, the effect of the water–binder ratio, cementitious ratio, and replacement cement ratio on the compressive strength, corrosion resistance coefficient, and chloride ion permeability coefficient of the materials were analyzed and the mix proportions of the materials were evaluated and optimized using the comprehensive scoring method. The results show that implementing a FA:GBFS:SF:DG ratio of 2:6:1:1 to replace 60% of cement allows the consumption of calcium hydroxide crystals generated through cement hydration, promotes the formation of ettringite, optimizes the pore structures of cementitious materials, and improves the compressive strength, acid corrosion resistance, and chloride ion permeability of the materials. This study provides a reference for selecting concrete materials for buildings in coastal acid rain environments.

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“…Several types of industrial and waste fibers have been used in previous studies [25]. Among these fibers are waste plastic fibers [26]. These fibers are considered a promising solution for developing the properties of concrete (depending on their type and proportion) on the one hand and for improving sustainability on the other hand, as they are solid wastes that affect the environment negatively.…”

Section: Introductionmentioning

confidence: 99%

Properties of a Low-Carbon Binder-Based Mortar Made with Waste LCD Glass and Waste Rope (Nylon) Fibers

Nasr

Shubbar

Hashim³

et al. 2023

Processes

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Carbon dioxide emissions are one of the problems that arouses the interest of scientists because of their harmful effects on the environment and climate. The construction sector, particularly the cement industry, is a significant source of CO2. On the other hand, solid waste constitutes a major problem facing governments due to the difficulty of decomposing it and the fact that it requires large areas for landfill. Among these wastes are LCD waste glass (WG) and used rope waste. Therefore, reusing these wastes, for example, in concrete technology, is a promising solution to reduce their environmental impact. Limited studies have dealt with the simultaneous utilization of glass waste as a substitute for cement and rope waste (nylon) fiber (WRF). Therefore, this study aimed to partially replace cement with WG with the addition of rope waste as fibers. Thirteen mixtures were poured: a reference mixture (without replacement or addition) and three other groups containing WG and WRF in proportions of 5, 15 and 25% by cement weight and 0.25, 0.5 and 0.75% by mortar weight, respectively. Flow rate, compression strength, flexural strength, dry density, water absorption, dynamic modulus of elasticity, ultrasonic pulse velocity and electrical resistivity were tested. The results indicate that the best ratio for replacing cement with WG without fibers was 5% of the weight of cement. However, using WRF increased the amount of glass replacement to 25%, with an improvement in strength and durability characteristics.

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Fresh and hardened properties of recycled plastic fiber reinforced self-compacting concrete made with recycled concrete aggregate and fly ash, slag, silica fume

Cited by 21 publications

References 55 publications

Engineering properties of self-compacting concrete incorporating PET fibres and recycled fine concrete aggregates

Engineering properties of self-compacting concrete incorporating PET fibres and recycled fine concrete aggregates

Preparation and Performance Study of High-Strength and Corrosion-Resistant Cement-Based Materials Applied in Coastal Acid Rain Areas

Properties of a Low-Carbon Binder-Based Mortar Made with Waste LCD Glass and Waste Rope (Nylon) Fibers

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