Optimisation of Mechanical Characteristics of Alkali-Resistant Glass Fibre Concrete towards Sustainable Construction

Hammad Tahir, Muhammad Basit Khan (), Nasir Shafiq, Dorin Radu, Marijana Hadzima Nyarko, Ahsan Waqar, Hamad R. Almujibah and Omrane Benjeddou
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Hammad Tahir: Department of Civil Engineering, Sir Syed University of Engineering and Technology, University Road, Karachi 75300, Pakistan
Muhammad Basit Khan: Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia
Nasir Shafiq: Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia
Dorin Radu: Faculty of Civil Engineering, Transilvania University of Brasov, Turnului Street, 500152 Brasov, Romania
Marijana Hadzima Nyarko: Faculty of Civil Engineering, Transilvania University of Brasov, Turnului Street, 500152 Brasov, Romania
Ahsan Waqar: Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar 32610, Malaysia
Hamad R. Almujibah: Department of Civil Engineering, College of Engineering, Taif University, Taif City 21974, Saudi Arabia
Omrane Benjeddou: Department of Civil Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Alkharj 11942, Saudi Arabia

Sustainability, 2023, vol. 15, issue 14, 1-25

Abstract: Concrete is a worldwide construction material, but it has inherent faults, such as a low tensile strength, when not reinforced with steel or other forms of reinforcement. Various innovative materials are being incorporated into concrete to minimise its drawbacks while concurrently improving its dependability and sustainability. This study addresses the research gap by exploring and enhancing the utilisation of glass fibre (GF) concerning its mechanical properties and reduction of embodied carbon. The most significant advantage of incorporating GF into concrete is its capacity to reduce the obstruction ratio, forming clusters, and subsequent material solidification. The study involved experiments wherein GF was incorporated into concrete in varying proportions of 0%, 0.5%, 0.75%, 1%, 1.25%, 1.50%, 1.75%, and 2% by weight. Mechanical tests and tests for durability were conducted, and Embodied carbon (EC) with eco-strength efficiency was also evaluated to assess the material’s sustainability. The investigation found that the optimal percentage of GF to be used in concrete is 1.25% by weight, which gives the optimum results for concrete’s mechanical strength and UPV. Adding 1.25% GF to the material results in increases of 11.76%, 17.63%, 17.73%, 5.72%, and 62.5% in C.S, STS, F.S, MoE, and impact energy, respectively. Concrete blended with 1.25% of GF has the optimum value of UPV. The carbon footprint associated with concrete positively correlates with the proportion of GF in its composition. The optimisation of GF in concrete is carried out by utilising the response surface methodology (RSM); equations generated through RSM enable the computation of the effects of incorporating GF in concrete.

Keywords: glass fibre; compressive strength; split tensile strength; flexural strength; mechanical properties; embodied carbon; eco-strength efficiency; RSM (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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