An experimental study on the mechanical and durability properties assessment of E-waste concrete

Ullah, Zeeshan; Qureshi, Muhammad Irshad; Ahmad, Afnan; Khan, Shafqat Ullah; Javaid, Muhammad Farrukh

doi:10.1016/j.jobe.2021.102177

Cited by 55 publications

(29 citation statements)

References 26 publications

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“…Generally, any regression model that possesses an R 2 value equal to or close to 1 is considered a more effective predictive model than one near zero. Several studies have adopted the statistical correlation method to identify the effect of one parameter on others [ 60 , 61 , 62 ].…”

Section: Resultsmentioning

confidence: 99%

The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

et al. 2021

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Peat is a well-known problematic soil associated with poor engineering properties. Its replacement with an expensive competent foundation material is practiced for road embankment construction which is costly and causes greenhouse gas emissions. Therefore, this paper investigated the effectiveness of a byproduct from a metal industry (silica fume) to stabilize peat along with ordinary Portland cement (OPC) through a series of experimental tests. After peat-indexed characterization, a number of standard compaction and mechanical tests were performed on the stabilized and parent peat. For this purpose, nine designated mixes were prepared possessing various combinations of silica fume (SF) and 10–20% OPC. Unconfined compressive strength (UCS) and California Bearing Ratio (CBR) tests were carried out after 7, 14, and 28 days of curing to assess strength enhancement and binder effectiveness, and the microstructural evolution induced by the binders was examined with scanning electron microscopy (SEM). The analysis revealed a substantial improvement in mechanical properties with the incorporation of SF and OPC, ultimately meeting the minimum strength requirement for highway construction (i.e., 345 kPa). A peak UCS of 1063.94 kPa was recorded at 20% SF, and an unsoaked CBR value of 42.95 was observed using 15% SF and 15% OPC after 28 days of curing. Furthermore, the increasing percentage of hydraulic binders exhibited brittle, collapsible failure, while the microstructural study revealed the formation of a dense matrix with a refined pore structure in the treated peat. Finally, a significant statistical analysis was carried out by correlating the test parameters. In this way, rather than stockpiling and dumping, an industrial byproduct was implemented in peat stabilization in an eco-friendly manner.

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Section: Resultsmentioning

confidence: 99%

The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

et al. 2021

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“…They reported that for a construction purpose greater than 15%, the substitution of E-waste is not satisfactory. Zeeshan et al [ 32 ] performed a comprehensive experimental analysis by using plastic aggregate as a partial substitution of coarse aggregate. The replacement ratios of plastic waste ranged from 0 to 20% of coarse aggregate.…”

Section: Introductionmentioning

confidence: 99%

“…The abrasion resistance of plastic aggregates was rarely investigated and reported as greater than natural aggregates because of their improved toughness [ 38 ]. Zeeshan et al [ 32 ] found that the ultrasonic pulse velocity (UPV) value declines with increasing proportions of plastic aggregate in concrete. It was observed that the UPV value decreased by 1.2%, 1.9%, and 3.3% at 10%, 15% and 20% partial substitution of NCA with PCA, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The literature review suggests that a comprehensive study associated with the behavior of recycled plastic aggregate concrete (RPAC) containing manufactured plastic coarse aggregate (PCA) is missing. This study focused on utilizing the manufactured PCA through the proper heating procedure [ 32 ] of shape and size comparable to NCA. To introduce plastic concrete as a practical alternative, it is crucial to investigate the several important characteristics of this new concrete type.…”

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of Plastic Concrete Modified with E-Waste Plastic as a Partial Replacement of Coarse Aggregate

et al. 2021

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Plastic electronic waste (E-waste) is constantly growing around the world owing to the rapid increase in industrialization, urbanization, and population. The current annual production rate of E-waste is 3–4% in the world and is expected to increase to 55 million tons per year by 2025. To reduce the detrimental impact on the environment and save natural resources, one of the best solutions is to incorporate waste plastic in the construction industry to produce green concrete. This study examines the use of manufactured plastic coarse aggregate (PCA) obtained from E-waste as a partial replacement of natural coarse aggregate (NCA) in concrete. Six types of concrete mix with 10%, 20%, 30%, 40%, and 50% substitution of NCA (by volume) with PCA are prepared and tested. This study investigates the effect of manufactured PCA on the fresh and hardened characteristics of concrete. The properties of recycled plastic aggregate concrete (RPAC) studied include workability, fresh density, dry density, compressive strength (CS), splitting tensile strength (STS), flexural strength (FS), sorptivity coefficient, abrasion resistance, ultrasonic pulse velocity (UPV), and alternate wetting and drying (W–D). The results indicate that the CS, STS, and FS of RPAC declined in the range of 9.9–52.7%, 7.8–47.5%, and 11–39.4%, respectively, for substitution ratios of 10–50%. However, the results also indicate that the incorporation of PCA (10–50%) improved the workability and durability characteristics of concrete. A significant decrement in the sorptivity coefficient, abrasion loss, and UPV value was observed with an increasing amount of PCA. Furthermore, RPAC containing different percentages of PCA revealed better results against alternate W–D cycles with respect to ordinary concrete.

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“…Various researchers worked on the usage of waste materials in the production of concrete including E-waste (Ali et al, 2021; De la Colina Martínez et al, 2019; Hamsavathi et al, 2020; Nasier, 2021; Ullah et al, 2021). The use of electronic waste minimizes the self-weight of concrete, minimizes the cost of cement, and amplifies the ductility of concrete.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of electronic waste concrete columns reinforced with structural fibers and glass fiber reinforced polymer bars: Experimental and analytical investigation

Khan

Ouni

Raza

et al. 2021

Advances in Structural Engineering

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Nowadays, the improper disposal of electronic waste (E-waste) is creating environmental pollution and health problems in developing countries. Moreover, the corrosion of steel bars reduces the serviceability of reinforced concrete columns. Although many researchers studied the behavior of glass fiber reinforced polymer (GFRP) bars in concrete columns, none of the studies investigated the structural performance of structural fiber-reinforced E-waste concrete (SFEC) columns having GFRP reinforcement. The present study aims to examine the structural performance of GFRP reinforced concrete circular columns consisting of polypropylene structural fibers (GSFEC columns) under concentric and eccentric loading. Identical steel bars reinforced concrete columns (SSFEC columns) were also manufactured and tested to failure under the same loading conditions. The experimental program consisted of 18 circular columns (1200 mm × 300 mm) to measure the axial capacity (AC), axial deflections, failure modes, and cracking patterns under different eccentric loadings. The AC of SSFEC columns was larger while the ductility was lower than GSFEC columns. Both GSFEC and SSFEC columns illustrated similar damaging behavior. The eccentric loading led to similar decreases in AC for both GSFEC and SSFEC columns.

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An experimental study on the mechanical and durability properties assessment of E-waste concrete

Cited by 55 publications

References 26 publications

The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

The Implementation of Industrial Byproduct in Malaysian Peat Improvement: A Sustainable Soil Stabilization Approach

Performance Evaluation of Plastic Concrete Modified with E-Waste Plastic as a Partial Replacement of Coarse Aggregate

Mechanical behavior of electronic waste concrete columns reinforced with structural fibers and glass fiber reinforced polymer bars: Experimental and analytical investigation

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