Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete
Lightweight fibre-reinforced concrete integrates the advantages of lightweight aggregates with the strength-enhancing properties of fibres, resulting in a lighter composite with enhanced impact and mechanical performance. However, achieving an optimal balance between structural weight, and performan...
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S259012302401404X |
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| author | Idris Ahmed Ja'e Zakaria Che Muda Mugahed Amran Agusril Syamsir Chiemela Victor Amaechi Ebrahim Hamid Hussein Al-Qadami Marco Antonio Díaz Huenchuan Siva Avudaiappan |
| author_facet | Idris Ahmed Ja'e Zakaria Che Muda Mugahed Amran Agusril Syamsir Chiemela Victor Amaechi Ebrahim Hamid Hussein Al-Qadami Marco Antonio Díaz Huenchuan Siva Avudaiappan |
| author_sort | Idris Ahmed Ja'e |
| collection | DOAJ |
| description | Lightweight fibre-reinforced concrete integrates the advantages of lightweight aggregates with the strength-enhancing properties of fibres, resulting in a lighter composite with enhanced impact and mechanical performance. However, achieving an optimal balance between structural weight, and performance remains a challenging endeavour. This study investigates the mechanical properties, impact energy absorptions, flexural toughness, and crack resistance of lightweight fibre-reinforced concrete with the coarse aggregate entirely replaced with lightweight expanded clay aggregate (LECA). Concrete mixes containing 0 %, 0.5 %, 0.75 %, and 1.0 % Polypropylene fibre (PPF) and 10 % micro-silica were experimentally investigated. Predictions for concrete mixes with up to 2 % PPF were made using regression models developed from experimental data. The experimental and predicted results were analysed using response surface methodology. The findings reveal significant enhancements of up to 300 % and 570 % in toughness indices I5 and I10 at 1 % PPF, coupled with a 55.4 % increase in residual strength. Furthermore, an optimised slab thickness of 47 mm containing 1.73 % PPF yielded optimal impact energy absorption of 680 J and 2384 J and crack resistance of 3823 MPa and 16279 MPa at service and ultimate loading, respectively. These metrics represent improvements of 4.8, 15.2, 37, and 56 times, respectively, compared to the control samples. These substantial advancements highlight the potential of lightweight fibre-reinforced LECA concrete in engineering applications where balancing impact energy absorption, crack resistance, and structural weight is crucial. This innovative approach promises a transformative impact on the construction industry, paving the way for more efficient and resilient infrastructure. |
| format | Article |
| id | doaj-art-8d28a46aca644d378d23dbb3ab71788c |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-8d28a46aca644d378d23dbb3ab71788c2024-12-19T10:58:20ZengElsevierResults in Engineering2590-12302024-12-0124103149Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concreteIdris Ahmed Ja'e0Zakaria Che Muda1Mugahed Amran2Agusril Syamsir3Chiemela Victor Amaechi4Ebrahim Hamid Hussein Al-Qadami5Marco Antonio Díaz Huenchuan6Siva Avudaiappan7Institute of Energy Infrastructure, Universiti Tenaga Nasional, Putrajaya Campus, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia; Department of Civil Engineering, Ahmadu Bello University, Zaria, 810107, Nigeria; Corresponding author. Institute of Energy Infrastructure, Universiti Tenaga Nasional, Putrajaya Campus, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, Malaysia.Faculty of Engineering and Quantity Surveying, INTI-International University, Persiaran Perdana BBN Putra Nilai, 71800, Nilai, Malaysia; Corresponding author.Department of Civil Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Alkharj, 11942, Saudi ArabiaInstitute of Energy Infrastructure, Universiti Tenaga Nasional, Putrajaya Campus, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, MalaysiaInstitute of Energy Infrastructure, Universiti Tenaga Nasional, Putrajaya Campus, Jalan IKRAM-UNITEN, 43000, Kajang, Selangor, MalaysiaEco Hydrology Technology Research Centre (Eco-Hytech), Faculty of Civil Engineering and Built Environment, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Johor, MalaysiaDepartamento de Ciencias de la Construcción, Facultad de Ciencias de la Construcción y Ordenamiento Territorial, Universidad Tecnológica Metropolitana, Santiago, ChileDepartamento de Ciencias de la Construcción, Facultad de Ciencias de la Construcción y Ordenamiento Territorial, Universidad Tecnológica Metropolitana, Santiago, Chile; Corresponding author.Lightweight fibre-reinforced concrete integrates the advantages of lightweight aggregates with the strength-enhancing properties of fibres, resulting in a lighter composite with enhanced impact and mechanical performance. However, achieving an optimal balance between structural weight, and performance remains a challenging endeavour. This study investigates the mechanical properties, impact energy absorptions, flexural toughness, and crack resistance of lightweight fibre-reinforced concrete with the coarse aggregate entirely replaced with lightweight expanded clay aggregate (LECA). Concrete mixes containing 0 %, 0.5 %, 0.75 %, and 1.0 % Polypropylene fibre (PPF) and 10 % micro-silica were experimentally investigated. Predictions for concrete mixes with up to 2 % PPF were made using regression models developed from experimental data. The experimental and predicted results were analysed using response surface methodology. The findings reveal significant enhancements of up to 300 % and 570 % in toughness indices I5 and I10 at 1 % PPF, coupled with a 55.4 % increase in residual strength. Furthermore, an optimised slab thickness of 47 mm containing 1.73 % PPF yielded optimal impact energy absorption of 680 J and 2384 J and crack resistance of 3823 MPa and 16279 MPa at service and ultimate loading, respectively. These metrics represent improvements of 4.8, 15.2, 37, and 56 times, respectively, compared to the control samples. These substantial advancements highlight the potential of lightweight fibre-reinforced LECA concrete in engineering applications where balancing impact energy absorption, crack resistance, and structural weight is crucial. This innovative approach promises a transformative impact on the construction industry, paving the way for more efficient and resilient infrastructure.http://www.sciencedirect.com/science/article/pii/S259012302401404XLightweight LECA concretePolypropylene fibreFlexural toughnessImpact energy absorptionEnergyCrack resistance |
| spellingShingle | Idris Ahmed Ja'e Zakaria Che Muda Mugahed Amran Agusril Syamsir Chiemela Victor Amaechi Ebrahim Hamid Hussein Al-Qadami Marco Antonio Díaz Huenchuan Siva Avudaiappan Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete Results in Engineering Lightweight LECA concrete Polypropylene fibre Flexural toughness Impact energy absorption Energy Crack resistance |
| title | Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete |
| title_full | Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete |
| title_fullStr | Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete |
| title_full_unstemmed | Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete |
| title_short | Modelling and optimisation of the structural performance of lightweight polypropylene fibre-reinforced LECA concrete |
| title_sort | modelling and optimisation of the structural performance of lightweight polypropylene fibre reinforced leca concrete |
| topic | Lightweight LECA concrete Polypropylene fibre Flexural toughness Impact energy absorption Energy Crack resistance |
| url | http://www.sciencedirect.com/science/article/pii/S259012302401404X |
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