Effect of rubberized concrete integrating uncoated and coated crumb rubber on the flexural behavior of the RC beams reinforced with steel and GFRP bars

Ahmed, Sayed; Sharaky, I.A.; El Sayed, Sara; Hassan, Hilal; Abdo, Ayman

doi:10.1016/j.conbuildmat.2024.136192

Cited by 4 publications

(2 citation statements)

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“…Hence, replacing these natural aggregates has become essential. Different industrial waste products, including bottom ash, copper slag, crushed glass aggregate, crushed hardened concrete waste, crushed spent fired clay bricks, waste tire-crumb rubber, and waste foundry sand, have been studied as potential replacements for fine aggregates in concrete [14,20,[28][29][30]. Research on the use of waste from foundry sand (WFS) as a fine aggregate that was used to replace natural sand for concrete production was carried out by Bilal et al [20].…”

Section: Introductionmentioning

confidence: 99%

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Durability Assessment of Eco-Friendly Bricks Containing Lime Kiln Dust and Tire Rubber Waste Using Mercury Intrusion Porosimetry

Oke,

Abuel-Naga

2024

Applied Sciences

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The global challenge faced due to the impact of the construction industry on climate change, along with the issues surrounding sustainable waste disposal, has necessitated various research on using waste products as eco-friendly alternatives in construction. In this study, the avoidance of waste disposal through landfills in Australia was encouraged by incorporating lime kiln dust (LKD) and tire rubber waste (TRW) into masonry mixes to manufacture green bricks. Furthermore, the investigations in this article highlight the use of mercury intrusion porosimetry (MIP) to determine the durability of the LKD-TRW bricks when exposed to freeze–thaw (F-T) cycles by examining the pore size distribution within the bricks. The LKD waste was blended with ground granulated blast furnace slag (GGBFS) at a 70:30 blending ratio and combined with the TRW in stepped increments of 5% from 0 to 20% to produce these eco-friendly bricks. The compressive strength (CS), flexural strength (FS), frost resistance (FR), pore size distribution according to mercury intrusion porosimetry (MIP), and the water absorption (WA) properties of the bricks were assessed. The CS and FS values at 28 days of curing were recorded as 6.17, 5.25, and 3.09 MPa and 2.52, 2, and 1.55 MPa for 0, 5, and 10% TRW contents, respectively. Durability assessments using the F-T test showed that the bricks produced with 0% TRW passed as frost-resistant bricks. Furthermore, the results from the MIP test showed a total pore volume of 0.033 mL/g at 3 µm pore size for the 0% TRW content, further confirming its durability. Hence, the 0% LKD-TRW bricks can be utilized in cold regions where temperatures can be as low as −43 °C without deteriorating. Lastly, WA values of 7.25, 11.76, and 14.96% were recorded for the bricks with 0, 5, and 10% TRW, respectively, after the 28-day curing period. From all of the results obtained from the laboratory investigations, the LKD-TRW bricks produced with up to 10% TRW were within the satisfactory engineering requirements for masonry units.

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Section: Introductionmentioning

confidence: 99%

“…In another study by Ahmed et al [30], the effects of coated and uncoated rubber on the flexural behavior of reinforced concrete (RC) beams were investigated. This research was carried out to conserve the naturally occurring fine sand and divert the waste rubber from ending up in landfills.…”

Section: Introductionmentioning

confidence: 99%