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Erschienen in: Journal of Material Cycles and Waste Management 3/2022

22.02.2022 | ORIGINAL ARTICLE

Influence of acetic acid soaking and mechanical grinding treatment on the properties of treated recycled aggregate concrete

verfasst von: Abhishek Verma, V. S. Babu, S. Arunachalam

Erschienen in: Journal of Material Cycles and Waste Management | Ausgabe 3/2022

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Abstract

The utilization of recycled aggregate (RA) extracted from construction and demolition (C&D) waste contributes to reducing the usage of natural aggregate (NA) to produce new concrete. The authors used immersion of RA in mild acetic acid (3%concentration), with subsequent rotation in Los Angeles (LA) abrasion machine (mechanical grinding) treatment to produce high-quality RA in the current work. To study the influence of treated recycled aggregates (TRAs), various types of TRAs [viz: TRA (0 min), TRA (3 min), TRA (5 min), TRA (7 min), TRA (10 min), TRA (12 min)] were replaced with NA in a control mix of M40 grade concrete. In this work, different replacement levels (viz: 0%, 25%, 50%, 75%, and 100%) were used to substitute NA in each different type of TRAs. The properties viz: slump, compressive, tensile strength, flexural strength, density, modulus of elasticity, ultrasonic pulse velocity, drying shrinkage, and Scanning electron microscope of RA were reported. Based on the test results, 72 h of soaking in mild acetic acid (3% concentration) followed by 7 min of mechanical grinding in the LA abrasion machine was observed as the optimal treatment duration to generate high-quality RA. The compressive and split tensile strength were reduced by 17.11%, 14.33%, respectively, in concrete with RA compared to natural aggregate concrete (NAC).

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Metadaten
Titel
Influence of acetic acid soaking and mechanical grinding treatment on the properties of treated recycled aggregate concrete
verfasst von
Abhishek Verma
V. S. Babu
S. Arunachalam
Publikationsdatum
22.02.2022
Verlag
Springer Japan
Erschienen in
Journal of Material Cycles and Waste Management / Ausgabe 3/2022
Print ISSN: 1438-4957
Elektronische ISSN: 1611-8227
DOI
https://doi.org/10.1007/s10163-022-01360-6

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