Durability of rubberized concrete with recycled steel fibers from tyre recycling in aggresive enviroments

Medina, Darío Flores; Martínez, M. Carolina Hernández; Medina, Nelson Flores; Olivares, Francisco Hernández

doi:10.1016/j.conbuildmat.2023.132619

Cited by 3 publications

(1 citation statement)

References 52 publications

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“…Flores Medina et al studied rubberized concrete durability, finding that larger rubber particles improved freeze–thaw and acid resistance. UPV effectively assessed degradation, while fibers improved cohesion 16 . Gorde reviewed using treated crumb rubber as a fine aggregate in concrete, finding rubber requires treatment to improve concrete properties and bond with the cement matrix 17 .…”

Section: Introductionmentioning

confidence: 98%

Enhancing high-performance concrete sustainability: integration of waste tire rubber for innovation

Singaravel,

Veerapandian,

Rajendran

et al. 2024

Sci Rep

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This study extensively explored the impact of integrating waste tire rubber into high-performance concrete (HPC) by substituting natural sand. Different fractions of rubber particles—5%, 10%, and 15% replacements of the fine aggregate—were rigorously investigated. Properties from fresh to hardened concrete were assessed, including compressive and tensile strength, modulus of elasticity, workability, and damping coefficient. Replacing up to 10% of sand with 0.6 mm rubber particles showed minimal strength compromise compared to standard HPC. However, at a 15% replacement rate, a noticeable decline in strength became evident, highlighting an optimal threshold for inclusion. Additionally, rubber incorporation notably enhanced concrete ductility and damping, marking a substantial improvement in dynamic properties. Efforts to offset strength reduction through increased fines content and mineral admixture could not counteract the decline at the 15% replacement level, suggesting limitations in compensatory measures. Methodological refinements enhanced data accuracy, including capping and surface treatments during compression testing. The study underlined the viability of controlled rubber substitution for bolstering HPC's dynamic attributes. Despite strength reductions at higher replacement rates, controlled waste tire rubber integration proves promising for enhancing HPC's dynamics without compromising structural integrity, advocating its suitability across diverse construction applications.

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Section: Introductionmentioning

confidence: 98%

Enhancing high-performance concrete sustainability: integration of waste tire rubber for innovation

Singaravel,

Veerapandian,

Rajendran

et al. 2024

Sci Rep

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Enhancing of damping capacity in crumb rubber concrete at various damage levels: Effects of fly ash and ground granulated blast furnace slag

Mo,

Ren,

Feng

et al. 2024

Journal of Building Engineering

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Study on the Influence of Magnesite Tailings on the Expansion and Mechanical Properties of Mortar

Jiang,

Zhou,

Mao

et al. 2023

Materials

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To reduce the mining of high-grade magnesite and solve the environmental pollution caused by magnesite tailings, magnesite tailings were used to produce MgO expansion agent (MEA), and a detailed study of its performance was carried out in this study. Firstly, the effects of different calcination times on the calcination products, the specific surface area, and the activity of MEA were analyzed. Then, the MEA produced by calcinating at 950 °C for 1 h was taken as the research object, and the effects of its content on the expansion performance, compressive strength, and flexural strength of the mortar were studied. The results showed that the decomposition of magnesite tailings after high-temperature calcination produced MEA, and the longer the calcination time, the lower the activity. The calcined tailings could compensate for the shrinkage of the mortar, and the expansion increased with the increase in curing temperature. What is more, when the content was less than 8%, the hydration of MEA filled the pores and improved the compactness, so the strength of the mortar increased with the increase in the expansion agent content. When the dosage was greater than 8%, excessive expansion increased the porosity, causing harmful expansion of the mortar and damaging its integrity, leading to a decrease in strength. Fly ash reduced the expansion of mortar, and after adding 30% fly ash, the expansion decreased by 20.0–36.1%, and the ability to suppress expansion decreased with the increase in curing temperature.

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Durability of rubberized concrete with recycled steel fibers from tyre recycling in aggresive enviroments

Cited by 3 publications

References 52 publications

Enhancing high-performance concrete sustainability: integration of waste tire rubber for innovation

Enhancing high-performance concrete sustainability: integration of waste tire rubber for innovation

Enhancing of damping capacity in crumb rubber concrete at various damage levels: Effects of fly ash and ground granulated blast furnace slag

Study on the Influence of Magnesite Tailings on the Expansion and Mechanical Properties of Mortar

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