Article: Performance of RC deep beams containing eco-friendly waste PET aggregate: experimental investigation Journal: International Journal of Masonry Research and Innovation (IJMRI) 2025 Vol.10 No.3/4/5 pp.399 - 416 Abstract: This study aims to investigate the rheological properties, mechanical strength, and structural behaviour of self-compacting concrete (SCC) deep beams incorporating waste polyethylene terephthalate (PET) as partial replacement of fine and coarse aggregate. The replacement ratios were set at 10% and 20%. The engineering properties of SCC were examined such as slump flow test, slump flow time (T<SUB align="right"><SMALL>50cm</SMALL></SUB>), J-ring test, V-funnel and L-box test, compressive strength, splitting tensile strength, flexural strength. Additionally, the structural behaviour of the beams was assessed based on load-deflection curves, load-strain relationships, and cracking patterns. The results indicate that a replacement ratio of up to 10% has a minimal impact on the reduction of load-bearing capacity of deep beam. Furthermore, visual examinations were performed to determine the mode of failure. It was found that a certain amount of waste plastic can be used in structural applications without compromising the flexural characteristics of reinforced concrete beams. Inderscience Publishers - linking academia, business and industry through research

Title: Performance of RC deep beams containing eco-friendly waste PET aggregate: experimental investigation

Authors: James H. Haido; Shireen T. Saadullah; Sundis M.S. Taher; Qahar Mustafa Abdullah; Bashar A. Mahmood

Addresses: Civil Engineering Department, College of Engineering, University of Duhok (UoD), Zakho Street 38, 1006 AJ, Duhok 42001, Kurdistan Region, Iraq ' Civil Engineering Department, College of Engineering, University of Duhok (UoD), Zakho Street 38, 1006 AJ, Duhok 42001, Kurdistan Region, Iraq ' Mechanical Engineering Department, College of Engineering, University of Duhok (UoD), Zakho Street 38, 1006 AJ, Duhok 42001, Kurdistan Region, Iraq ' College of Engineering, University of Zakho (UoZ), Zakho, Kurdistan Region, Iraq ' Ministry of Labour and Social Affairs, General Directorate for Survivors Affairs, Iraq

Abstract: This study aims to investigate the rheological properties, mechanical strength, and structural behaviour of self-compacting concrete (SCC) deep beams incorporating waste polyethylene terephthalate (PET) as partial replacement of fine and coarse aggregate. The replacement ratios were set at 10% and 20%. The engineering properties of SCC were examined such as slump flow test, slump flow time (T_50cm), J-ring test, V-funnel and L-box test, compressive strength, splitting tensile strength, flexural strength. Additionally, the structural behaviour of the beams was assessed based on load-deflection curves, load-strain relationships, and cracking patterns. The results indicate that a replacement ratio of up to 10% has a minimal impact on the reduction of load-bearing capacity of deep beam. Furthermore, visual examinations were performed to determine the mode of failure. It was found that a certain amount of waste plastic can be used in structural applications without compromising the flexural characteristics of reinforced concrete beams.

Keywords: self-compacting concrete; SCC; waste polyethylene terephthalate; PET; deep beams; engineering properties.

DOI: 10.1504/IJMRI.2025.146253

International Journal of Masonry Research and Innovation, 2025 Vol.10 No.3/4/5, pp.399 - 416

Received: 11 Sep 2023
Accepted: 16 Dec 2023
Published online: 14 May 2025 *

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Title: Performance of RC deep beams containing eco-friendly waste PET aggregate: experimental investigation

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