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Smart Structures and Systems Volume 24, Number 4, October 2019 , pages 541-552 DOI: https://doi.org/10.12989/sss.2019.24.4.541 |
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The effect of wollastonite powder with pozzolan micro silica in conventional concrete containing recycled aggregate |
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Du Dinh-Cong, Mohammad. H Keykhosravi, Rayed Alyousef, Musab N A Salih,
Hoang Nguyen, Hisham Alabduljabbar, Abdulaziz Alaskar, Fahed Alrshoudi and Shek Poi-Ngian
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| Abstract | ||
| Construction development and greenhouse gas emissions have globally required a strategic management to take some steps to stain and maintain the environment. Nowadays, recycled aggregates, in particular ceramic waste, have been widely used in concrete structures due to the economic and environmentally friendly solution, requiring the knowledge of recycled concrete. Also, one of the materials used as a substitute for concrete cement is wollastonite mineral to decrease carbon dioxide (CO2) from the cement production process by reducing the concrete consumption in concrete. The purpose of this study is to investigate the effect of wollastonite on the mechanical properties and durability of conventional composite concrete, containing recycled aggregates such as compressive strength, tensile strength (Brazilian test), and durability to acidic environment. On the other hand, in order to determine the strength and durability of the concrete, 5 mixing designs including different wollastonite values and recovered aggregates including constant values have been compared to the water - cement ratio (w/c) constant in all designs. The experimental results have shown that design 5 (containing 40% wollastonite) shows only 6.1% decrease in compressive strength and 4.9% decrease in tensile strength compared to the control plane. Consequently, the use of wollastonite powder to the manufacturing of conventional structural concrete containing recycled ceramic aggregates, in addition to improving some of the properties of concrete are environmentally friendly solutions, providing natural recycling of materials. | ||
| Key Words | ||
| wollastonite powder; recycled concrete; ceramic waste; durability in the acidic environment | ||
| Address | ||
| Du Dinh-Cong: Division of Construction Computation, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam Mohammad. H Keykhosravi: Malaysia-Japan International Institute of Technology, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia Rayed Alyousef and Hisham Alabduljabbar: Department of Civil Engineering, College of Engineering, Prince Sattam bin Abdulaziz University, Al-kharj 11942, Saudi Arabia Musab N A Salih: School of Civil engineering, Faculty of Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia Abdulaziz Alaskar and Fahed Alrshoudi:Department of Civil Engineering, College of Engineering, King Saud University, Riyadh 11362, Saudi Arabia Shek Poi-Ngian: Construction Research Center (CRC), Institute for Smart Infrastructure & Innovative Construction (ISIIC), School of Civil Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Johor, Malaysia Hoang Nguyen: Institute of Research and Development, Duy Tan University, Da Nang 550000, Viet Nam | ||