Examining Mechanical Properties of Recycled Aggregate Concrete

Alsalman, Ali and Khudair, Jamal and Kareem, Rahman and Assi, Lateef and Dang, Canh and Martí-Vargas, José R. (2022) Examining Mechanical Properties of Recycled Aggregate Concrete. In: IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey.

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Abstract

This study develops several mid-strengths recycled aggregate concrete (RAC) mixtures. The experimental part examines three groups. The first group, natural aggregate concrete (NAC) mixtures, used 100% natural gravel aggregate. The second group (RAC-I) used a combination of natural gravel aggregate and recycled concrete aggregate (30% per total weight of coarse aggregates). The parent concrete had a compressive strength of 20-30 MPa. The third group (RAC-II) had a similar and higher percentage of recycled concrete aggregate replacement of 30%, 50%, and 100%. The reference concrete had a compressive strength of 30-40 MPa. The results revealed that the 30% substitution of recycled concrete aggregate had minimal effect on the concrete workability and mechanical properties. The shrinkage of RAC-I mixtures at an age of 112 days, is 40% higher than that of NAC mixtures. The analysis of emission indicates that RCA can be a suitable option to reduce CO2 emission.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: sustainable construction; recycled concrete aggregate; recycled aggregate concrete; compressive strength; modulus of elasticity; shrinkage; co2 emission
Subjects: T Technology > T Technology (General)
Depositing User: EAI Editor IV
Date Deposited: 29 Apr 2022 13:07
Last Modified: 29 Apr 2022 13:07
URI: https://eprints.eudl.eu/id/eprint/10931

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