Sustainable and Low-Cost Hemp FRP Composite Confinement of B-Waste Concrete
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Department of Civil and Environmental Engineering, Faculty of Engineering, Srinakharinwirot University, Nakhonnayok 26120, Thailand
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Construction Innovations and Future Infrastructure Research Center (CIFIR), Department of Civil Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
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Department of Transportation Engineering and Management, University of Engineering and Technology, Lahore 54890, Pakistan
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Department of Civil Engineering, University of Management and Technology, Lahore 54770, Pakistan
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Thammasat Research Unit in Infrastructure Inspection and Monitoring, Repair and Strengthening (IIMRS), Thammasat School of Engineering, Faculty of Engineering, Thammasat University Rangsit, Pathum Thani 12000, Thailand
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Center of Excellence in Earthquake Engineering and Vibration, Department of Civil Engineering, Chulalongkorn University, Bangkok 10330, Thailand
*
Author to whom correspondence should be addressed.
Academic Editors: Libo Yan, Ruoyu Jin, Yidong Xu and Zhenhua Duan
Sustainability 2022, 14(13), 7673; https://doi.org/10.3390/su14137673
Received: 12 May 2022
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Revised: 9 June 2022
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Accepted: 20 June 2022
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Published: 23 June 2022
(This article belongs to the Special Issue Recycled Construction & Demolition Waste as Concrete Aggregate for Sustainable Construction)
Each year, massive amount of construction waste is generated that needs proper attention in terms of its disposal without deteriorating surrounding environment. A significant portion of this waste comprises bricks. Besides, large number of new construction works are resulting in the depletion of natural resources rapidly. Intuitively, a sustainable solution demands to consume this construction waste in the best way possible. This study targeted brick waste as a potential material to be used as a partial replacement of natural aggregates in structural concrete. It has been known that the concrete constructed with recycled brick aggregates possesses substandard mechanical properties. Traditionally, synthetic FRPs are known to strengthen recycled aggregate concrete. However, recognizing high costs associated with them, this study proposed the use of natural hemp fiber ropes to strengthen recycled aggregate concrete constructed with brick aggregates. To assess the efficacy of hemp ropes in strengthening mechanical properties of the concrete with coarse aggregates partially replaced with recycled brick aggregates (B-waste), an experimental framework was conducted. Sixteen cylindrical specimens were tested in two groups depending upon the concrete strength. Within each group, 2 specimens each were strengthened with 1, 2, and 3 layers of hemp fiber ropes. Axial monotonic compressive loading was applied to each specimen. Results revealed that hemp fiber ropes significantly improved ultimate compressive strength and the corresponding strain. A substantial improvement in axial ductility was observed. For the sake of performance-based non-linear modelling, accurate constitutive modelling at material level is necessary. For this purpose, several existing analytical stress-strain models were tested in this study to predict ultimate confined compressive strength and strain. It was found that several models predicted confined compressive strengths with reasonable accuracy. However, very few models were able to predict confined peak strain with good accuracy.
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Keywords:
hemp fiber rope; recycled aggregate concrete; cement-clay interlocking brick aggregates; stress-strain models
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MDPI and ACS Style
Joyklad, P.; Yooprasertchai, E.; Rahim, A.; Ali, N.; Chaiyasarn, K.; Hussain, Q. Sustainable and Low-Cost Hemp FRP Composite Confinement of B-Waste Concrete. Sustainability 2022, 14, 7673. https://doi.org/10.3390/su14137673
AMA Style
Joyklad P, Yooprasertchai E, Rahim A, Ali N, Chaiyasarn K, Hussain Q. Sustainable and Low-Cost Hemp FRP Composite Confinement of B-Waste Concrete. Sustainability. 2022; 14(13):7673. https://doi.org/10.3390/su14137673
Chicago/Turabian StyleJoyklad, Panuwat, Ekkachai Yooprasertchai, Abdur Rahim, Nazam Ali, Krisada Chaiyasarn, and Qudeer Hussain. 2022. "Sustainable and Low-Cost Hemp FRP Composite Confinement of B-Waste Concrete" Sustainability 14, no. 13: 7673. https://doi.org/10.3390/su14137673
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