Modification of recycled aggregate and conservation and application of recycled aggregate concrete: A review

Wu, Lei; Sun, Zhe; Cao, Yan

doi:10.1016/j.conbuildmat.2024.136567

Construction and Building Materials

2024

DOI: 10.1016/j.conbuildmat.2024.136567

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Modification of recycled aggregate and conservation and application of recycled aggregate concrete: A review

Lei Wu,

Zhe Sun,

Yan Cao

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2024

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Cited by 19 publications

References 168 publications

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Incorporating Construction and Demolition Waste (CDW) in Art and Small-Scale Architectural Elements: A Sustainable Disposal Alternative

Cañola,

Pérez,

Sandoval

et al. 2024

Circ.Econ.Sust.

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Incorporating Construction and Demolition Waste (CDW) in Art and Small-Scale Architectural Elements: A Sustainable Disposal Alternative

Cañola,

Pérez,

Sandoval

et al. 2024

Circ.Econ.Sust.

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Optimizing sustainable concrete mixes with recycled aggregate and Portland slag cement for reducing environmental impact

Ismail,

Abdel Razik,

Ateya

et al. 2024

Discov Mater

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Concrete is the world's most extensively manufactured material, with the integration of recycled materials becoming crucial for sustainable construction. This study investigates the mechanical properties of concrete mixes containing Recycled Aggregates (RA) and Portland Slag Cement (PSC) to understand their suitability for sustainable construction applications. Utilizing normal-strength concrete with a compressive strength of 35 MPa and a 0.45 water-to-cement ratio, fifteen mix designs were tested, varying RA and PSC replacement levels from 0 to 100% and 0% to 50%, respectively. Comprehensive mechanical testing, including compressive and tensile strength assessments at 7 and 28 days, alongside modulus of elasticity and stress-strain curve evaluations, was conducted. The results reveal that full replacement of Natural Aggregate (NA) with RA decreased compressive strength by 10% and modulus of elasticity by 20%. However, a partial replacement of 25% of Ordinary Portland Cement (OPC) with PSC, in the presence of RA, moderated the reduction of compressive strength to 0.92% and increased the modulus of elasticity by 3.7%. The optimum mix, consisting of 75% OPC, 25% PSC, and 50% RA, significantly enhances concrete's mechanical properties, recommending it for reinforced concrete applications due to its potential environmental and structural benefits. KeywordsRecycled aggregate concrete (RAC) • Portland slag cement (PSC) • Natural aggregate (NA) replacement • Sustainability * Lamiaa Ismail, Lamiaa.

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Multi-faceted assessment of microbial-reinforced recycled brick aggregate concrete

Li,

Wang,

et al. 2024

Chemical Engineering Journal

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Modification of recycled aggregate and conservation and application of recycled aggregate concrete: A review

Cited by 19 publications

References 168 publications

Incorporating Construction and Demolition Waste (CDW) in Art and Small-Scale Architectural Elements: A Sustainable Disposal Alternative

Incorporating Construction and Demolition Waste (CDW) in Art and Small-Scale Architectural Elements: A Sustainable Disposal Alternative

Optimizing sustainable concrete mixes with recycled aggregate and Portland slag cement for reducing environmental impact

Multi-faceted assessment of microbial-reinforced recycled brick aggregate concrete

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