The Possibility of Producing Self-Compacting Lightweight Concrete by Using Expanded Polystyrene Beads as Coarse Aggregat
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RESEARCH ARTICLE-CIVIL ENGINEERING
The Possibility of Producing Self-Compacting Lightweight Concrete by Using Expanded Polystyrene Beads as Coarse Aggregate Ammar Hamid Medher1 · Abdulkader Ismail Al-Hadithi2 · Nahla Hilal3 Received: 16 April 2020 / Accepted: 18 August 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract Self-compacting concrete (SCC) is one of the emerging materials and because of its better fresh and hardened properties, its application is increasing day by day in the construction industry. Utilizing lightweight aggregates and fibers could improve further fresh and hardened properties of SCC. But due to considerable differences between the densities of lightweight, aggregates and binders will result in poor fresh and hardened properties. In this research work, expanded polystyrene beads utilized as coarse aggregate and inclusion of different percentage of waste plastic fiber (WPF) has been used to find the effect on fresh and hardened properties of SCLWC through experiments. The results reveal better fresh properties of SCLWC; however, the optimum fresh properties achieved at E1.0 mixture. Also, the compressive and flexural strengths increased with increasing the percentage of WPF in SCLWC. Moreover, ultrasonic pulse velocity decreased with increasing WPF in SCLWC. The wet density, dry density and percent absorption showed a mixed trend of increasing and decreasing with increasing percentage of WPF; however, all these values were within the ENFARC limits for SCC. And SEM images showed the number of voids on the surface of produced SCLWC specimens. Keywords Self-compacting concrete · Lightweight aggregates · EPS beads · Waste plastic fibers · Fresh and hardened properties of SCLWC
1 Introduction For the last many decades, human activities, industries, natural disasters, increasing population, urbanization and many more were the sources for producing solid wastes. These solid wastes include wood, iron, glass, rubber, ceramics and plastic. At the same moment, scientists and or engineers are trying to reduce such solid wastes and make our environment clean.
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Ammar Hamid Medher [email protected] Abdulkader Ismail Al-Hadithi [email protected] Nahla Hilal [email protected]
1
Department of Civil Engineering, College of Engineering, University of Anbar, Ramadi, Anbar, Iraq
2
Department of Dams and Water Resources Engineering, College of Engineering, University of Anbar, Ramadi, Anbar, Iraq
3
Scholarships and Cultural Affairs Department, University of Fallujah, Fallujah, Iraq
Also, many scientific studies are mainly focusing to provide information to recycle these solid wastes and balanced nature. According to Topcu [1], it is impossible to control solid wastes merely through manpower; however, recycling centers are strongly recommended to settle this issue. Vivian and Tam [2, 3] identified the environmental and economic benefits to be achieved from the recycling of solid wastes are enormous as it will be advantageous to both the environment and the constru
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