Mechanical and microstructural characterization of cement mortars prepared by waste foundry sand (WFS)

Çevik, Sinem; Mutuk, Tuğba; Oktay, Başak Mesci; Demirbaş, Arife Kübra

doi:10.1007/s41779-017-0096-9

Cited by 19 publications

(9 citation statements)

References 14 publications

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“…The FS value of M-1 and M-5 is very similar. This finding is in line with some other research findings such as those of [4,5,8,9,10,11,12].…”

Section: Resultssupporting

confidence: 93%

“…The change in STS with the content of WFS was similar to that observed for CS. The results of the present study are in good agreement with the findings of [4,5,8,9,10,11,12]. In this current investigation, the connection among CS and STS was observed in accordance with that of conventional concrete, i.e., the proportion of STS to CS for all the mixes was noted to be lying within the range of 8–15% [58].…”

Section: Resultssupporting

confidence: 91%

“…Metal casting foundries in the U.S. dispose of about nine million tons of spent sand in landfills per year [7]. According to the industry estimates, almost 100 × 10 6 tons of foundry sand is used in production in a year; out of this amount, about four to seven million tons are wasted per annum and offered for recycled use [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Performance of Foundry Sand Concrete under Ambient and Elevated Temperatures

et al. 2019

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Waste foundry sand (WFS) is the by-product of the foundry industry. Utilizing it in the construction industry will protect the environment and its natural resources, and enable sustainable construction. WFS was employed in this research as a fractional substitution of natural sand by 0%, 10%, 20%, 30%, and 40% in concrete. Several tests, including workability, compressive strength (CS), splitting tensile strength (STS), and flexural strength (FS), ultrasonic pulse velocity (USPV), Schmidt rebound hammer number (RHN), and residual compressive strengths (RCS) tests were performed to understand the behavior of concrete before and after exposure to elevated temperatures. Test findings showed that the strength characteristics were increased by including WFS at all the phases. For a substitute rate of 30%, the maximum compressive, splitting tensile, and flexural strength were observed. Replacement with WFS enhanced the 28-day compressive, splitting tensile, and flexural strength by 7.82%, 9.87%, and 10.35%, respectively at a 30% replacement level, and showed continuous improvement until the age of 91 days. The RCS of foundry sand concrete after one month of air cooling at ambient temperature after exposing to 300 °C, 400 °C, 500 °C, 600 °C, 700 °C, and 800 °C was found to be in the range of 67.50% to 71.00%, 57.50% to 61.50%, 49.00% to 51.50%, 38% to 41%, 31% to 35% and 26% to 31.5% of unheated compressive strength values for 0% to 40% replacement of WFS, respectively. The RCS decreases with increasing temperature; however, with increasing WFS, the RCS was enhanced in comparison to the control samples. In addition, the replacement of 30% yielded excellent outcomes. Hence, this study provides a sustainable construction material that will preserve the Earth’s natural resources and provide a best use of WFS.

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“…The FS value of M-1 and M-5 is very similar. This finding is in line with some other research findings such as those of [4,5,8,9,10,11,12].…”

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 91%

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Performance of Foundry Sand Concrete under Ambient and Elevated Temperatures

et al. 2019

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“…Fracture behavior will initiate at the outer periphery of PLA, as a pristine sample PLA will not break that easily, allow it for transgranular failure pattern. The data depicts that mechanical tests such as compressive strength, flexural strength, split tension test, and impact test reveal that 10% inclusion of PLA was far more superior in strength than 30% inclusion [11]. From Figure 36e-h, it can be concluded that the debonding region got enhanced.…”

Section: With 30%pla Replacement For Fine Aggregatementioning

confidence: 89%

“…Pull-outs were also visible in all directions [20,21]. tension test, and impact test reveal that 10% inclusion of PLA was far more superior in strength than 30% inclusion [11]. From Figure 36e-h, it can be concluded that the debonding region got enhanced.…”

Section: With 30%pla Replacement For Fine Aggregatementioning

confidence: 91%

Multi-Scale Study on Mechanical Property and Strength of New Green Sand (Poly Lactic Acid) as Replacement of Fine Aggregate in Concrete Mix

et al. 2020

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Polylactic acid (PLA) has made inroads in the commercial market segment with many unique characteristics. To list a few, such as tenacity, low flame rate, moisture regain percentage, loss of ignition percentage, combustion heat, UV resistance, elastic recovery, and higher melting point, make PLA a predominant material in the commercial market. This study is an attempt to test the feasibility of PLA’s mechanical property and strength aspects with cement mix. An article published on biodegradability aspects backed up by the essential preliminary strength and physical test results is discussed in detail in this manuscript. The work focuses on the multi-scale study along with mechanical properties and strengths to evaluate the elemental characteristics. Thermo gravimetric analysis revealed that PLA would hold inclusion into construction applications either in granular form or filament. Differential Scanning Calorimetry (DSC) found that PLA in filament form is the best inclusion material for construction applications. However, fiber’s tenacity has to be checked, as currently available filaments in the market do not have high tenacity value. From EDX(Energy-dispersive X-ray Spectroscopy) reports, 30% inclusion of PLA as a replacement for fine aggregate has constituent members as Calcium carbonate(CaCO3), Silica(SiO2), and Wollastonite (CaK) resulted in the best composition among the rest. FESEM images revealed that proper gradation in size, PLA granular form’s rough surface, or filament form would enhance the mechanical/physical behavior or even PLA’s chemical behavior.

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Mechanical and durability characteristics of sustainable concrete modified with partial substitution of waste foundry sand

Ahmad

Aslam

Zaid

et al. 2021

Structural Concrete

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Industrial waste has rapidly increased day by day due to the fast‐growing population and usage of products, which dumps unscrupulously, resulting in environmental pollutions. Waste foundry sand (WFS) is one of the industrial solid wastes. River sand is generally used in concrete as a fine aggregate, which is limited (scant), and river excavation for sand leads to environmental deterioration. To resolve these problems, a study was performed on WFS as a partial substitution instead of natural sand in concrete. The effects of WFS on concrete performance were assessed through durability and mechanical performance. The results from experimental tests show that, compared to concrete blends with WFS up to 30% substitution, the control mix strength was only 7.6% (28 days) higher, and this improvement is not too high. In the same manner, concrete mixtures that contain WFS up to 30%, and their durability properties were somewhat same to blank max (control). Test results showed that WFS with a substitutions ratio up to 30% can be successfully used in concrete without disturbing its durability and strength properties.

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Mechanical and microstructural characterization of cement mortars prepared by waste foundry sand (WFS)

Cited by 19 publications

References 14 publications

Performance of Foundry Sand Concrete under Ambient and Elevated Temperatures

Performance of Foundry Sand Concrete under Ambient and Elevated Temperatures

Multi-Scale Study on Mechanical Property and Strength of New Green Sand (Poly Lactic Acid) as Replacement of Fine Aggregate in Concrete Mix

Mechanical and durability characteristics of sustainable concrete modified with partial substitution of waste foundry sand

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