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Advances in Concrete Construction Volume 10, Number 1, July 2020 , pages 1-11 DOI: https://doi.org/10.12989/acc.2020.10.1.001 |
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Effect of hybrid polypropylene-steel fibres on strength characteristics of UHPFRC |
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Peem Nuaklong, Jithaporn Chittanurak, Pitcha Jongvivatsakul, Withit Pansuk, Akhrawat Lenwari and Suched Likitlersuang
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| Abstract | ||
| This study intends to produce an ultra-high performance fibre reinforced concrete (UHPFRC) made with hybrid fibres (i.e., steel and polypropylene). Compressive and tensile strength characteristics of the hybrid fibres UHPFRC are considered. A total of 14 fibre-reinforced composites (FRCs) with different fibre contents or types of fibres were prepared and tested in order to determine a suitable hybrid fibre combination. The compressive and tensile strengths of each concrete at 7 days were determined. The results showed that a hybrid mix of micro-polypropylene and steel fibres exhibited good compromising performances and is the ideal reinforcement mixture in a strong, cost-effective UHPFRC. In addition, maximum compressive strength of 167 MPa was achieved for UHPFRC using 1.5% steel fibres blended with 0.5% macro-polypropylene fibres. | ||
| Key Words | ||
| ultra-high performance fibre reinforced concrete; steel fibre; polypropylene fibre; hybrid fibres; compressive strength; tensile strength | ||
| Address | ||
| Peem Nuaklong, Jithaporn Chittanurak, Pitcha Jongvivatsakul, Withit Pansuk: Innovative Construction Materials Research Unit, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand Akhrawat Lenwari: Composite Structures Research Unit, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand Suched Likitlersuang: Centre of Excellence in Geotechnical and Geoenvironmental Engineering, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand | ||
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