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

Research Article

Flexural Behaviour of Recycled Demolition Waste Reinforced Concrete Beams

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  • @INPROCEEDINGS{10.4108/eai.7-9-2021.2314922,
        author={Husham Mohammed Rashid and Hasan Jasim Mohammed},
        title={Flexural Behaviour  of Recycled Demolition Waste Reinforced Concrete Beams},
        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={recycled demolition waste reinforced concrete flexural beams coarse aggregate},
        doi={10.4108/eai.7-9-2021.2314922}
    }
    
  • Husham Mohammed Rashid
    Hasan Jasim Mohammed
    Year: 2022
    Flexural Behaviour of Recycled Demolition Waste Reinforced Concrete Beams
    IMDC-IST
    EAI
    DOI: 10.4108/eai.7-9-2021.2314922
Husham Mohammed Rashid1,*, Hasan Jasim Mohammed1
  • 1: Department of Civil Engineering, Faculty of Engineering, Tikrit University, P.O. Box (42) Tikrit, Iraq
*Contact email: hushammoh99@st.tu.edu.iq

Abstract

The experimental study investigates the effect of using recycled demolition aggregate (RDA) on the flexural behaviour of reinforced concrete beams. The beams were 1400 mm long, 150 mm wide and 200 mm deep, with the same longitudinal and shear reinforcement. The replacement ratios of recycled demolition aggregate are 0 %, 25 %, 50 %, 75 %, and 100 % of the coarse aggregate weight. The results presented that the deflections of the beams were reduced by up to 15 % and 43 % of 75 % RDA and 100% RDA, respectively when compared to the control beam. Furthermore, at 100% RDA, ductility, stiffness, and toughness were reduced by approximately 24 %, 10 %, and 34 %, respectively. At the same stage of loading, RDA beams cracked faster than normal aggregate beams.