Examining Mechanical Properties of Recycled Aggregate Concrete

Ali Alsalman; Jamal Khudair; Rahman Kareem; Lateef Assi; Canh Dang; José R. Martí-Vargas

Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey

Research Article

Examining Mechanical Properties of Recycled Aggregate Concrete

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@INPROCEEDINGS{10.4108/eai.7-9-2021.2314894,
    author={Ali Alsalman and Jamal Khudair and Rahman S. Kareem and Lateef Assi and Canh N Dang and Jos\^{e} R. Mart\^{\i}-Vargas},
    title={Examining Mechanical Properties of Recycled Aggregate Concrete},
    proceedings={Proceedings of 2nd International Multi-Disciplinary Conference Theme: Integrated Sciences and Technologies, IMDC-IST 2021, 7-9 September 2021, Sakarya, Turkey},
    publisher={EAI},
    proceedings_a={IMDC-IST},
    year={2022},
    month={1},
    keywords={sustainable construction; recycled concrete aggregate; recycled aggregate concrete; compressive strength; modulus of elasticity; shrinkage; co2 emission},
    doi={10.4108/eai.7-9-2021.2314894}
}

Ali Alsalman
Jamal Khudair
Rahman S. Kareem
Lateef Assi
Canh N Dang
José R. Martí-Vargas
Year: 2022
Examining Mechanical Properties of Recycled Aggregate Concrete
IMDC-IST
EAI
DOI: 10.4108/eai.7-9-2021.2314894

Ali Alsalman¹^,*, Jamal Khudair², Rahman S. Kareem³, Lateef Assi⁴, Canh N Dang⁵, José R. Martí-Vargas⁶

1: Tatum-Smith-Welcher Engineers, Inc., 3100 S Market St., Rogers, AR 72758, USA & College of Engineering, Civil Engineering Department, Al Maaqal University, Basra, Iraq
2: College of Engineering, Civil Engineering Department, University of Basra, Basra, Iraq
3: University of Arkansas, Department of Civil Engineering, 4190 Bell Engineering Center Fayetteville, AR 72701, USA
4: Department of Civil and Environmental Engineering, University of South Carolina, Columbia, USA
5: Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Vietnam
6: Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam5 Institute of Concrete Science and Technology (ICITECH), Universitat Politecnica de Valencia, Valencia, Spain

*Contact email: alialsalman609@gmail.com

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.

Keywords: sustainable construction; recycled concrete aggregate; recycled aggregate concrete; compressive strength; modulus of elasticity; shrinkage; co2 emission

Published: 2022-01-26
Publisher: EAI

: http://dx.doi.org/10.4108/eai.7-9-2021.2314894

Examining Mechanical Properties of Recycled Aggregate Concrete

Abstract

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