Efficiency of Supplementary Cementitious Materials and Natural Fiber on Mechanical Performance of Concrete
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RESEARCH ARTICLE-CIVIL ENGINEERING
Efficiency of Supplementary Cementitious Materials and Natural Fiber on Mechanical Performance of Concrete Sohaib Arshad1 · Muhammad Burhan Sharif1 · Muhammad Irfan‑ul‑Hassan1 · Mehran Khan2 · Jiao‑Long Zhang3 Received: 11 April 2020 / Accepted: 28 June 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract In this research study, mechanical properties of silica fume bagasse ash plain concrete (SFBA-PC) and silica fume bagasse ash basalt fiber-reinforced concrete (SFBA-BFRC) are studied. A total of fifteen concrete mixes are prepared for three separate concrete groups (five for each concrete group). The first group of SFBA-PC contains fixed optimum content of silica fume, i.e., 8%, by cement mass, and variable contents of bagasse ash, i.e., 0%, 5%, 10% and 15%, by cement mass. In the second and third groups of SFBA-BFRC, mixes are prepared like the first group of concrete, but only basalt fibers are added with two different percentages of 0.5% and 1.0%, by concrete volume, respectively. For the evaluation of each concrete mix, different mechanical tests are conducted to determine the stress–strain and load–deflection behavior. In addition to this, split-tensile strength and water absorption tests are also performed for each type of concrete mix. The scanning electron microscopy (SCM) analysis is performed, which has confirmed the pozzolanic activity and filler effect caused by SCMs, which has also improved the bridging effects of basalt fiber that results in concrete strength improvement. The results indicated that the mechanical properties of SFBA-BFRC are generally improved in comparison with those of SFBA-PC. In all three groups of concrete, 10% BA is found to be the optimum content, and SFBA-BFRC containing 8% silica fume, 10% bagasse ash and 1.0% basalt fiber content showed overall better performance under multiple testing scenarios. Keywords Concrete · Bagasse ash · Silica fume · Basalt fibers · Mechanical properties List of Symbols BA Bagasse ash SF Silica fume BF Basalt fiber SCM Supplementary cementitious material OPC Ordinary Portland cement PC Plain concrete FRC Fiber-reinforced concrete SFBA-PC Silica fume, bagasse ash plain concrete SFBA-BFRC Silica fume, bagasse ash basalt fiber-reinforced concrete * Muhammad Irfan‑ul‑Hassan [email protected] 1
Department of Civil Engineering, University of Engineering and Technology, Lahore, G.T. Road, District Lahore Cantt, Lahore, Punjab 54890, Pakistan
2
School of Civil Engineering, Dalian University of Technology, Linggong Road, Ganjingzi District, Dalian 116024, Liaoning, People’s Republic of China
3
School of Civil Engineering, Tongji University, Shanghai 1239, People’s Republic of China
ASTM American Society for Testing and Materials σc Compressive stress 𝜎max Maximum/peak compressive stress σu Ultimate compressive stress ε Compressive strain fc Compressive strength P Compression/flexural/split-tensile load Pmax Maximum compression/flexural/splittensile load Pult Ultimat
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