Some characteristics of high strength fiber reinforced lightweight aggregate concrete |
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| Affiliation: | 1. Department of Computer Science and Engineering, School of Computing, Kalasalingam Academy of Research and Education, Anandnagar, Krishnankoil, Virudhunagar Dt, India;2. Department of Civil Engineering, School of Environmental and Construction Technology Kalasalingam Academy of Research and Education, Anandnagar, Krishnankoil, Virudhunagar Dt, India;3. Dept. of Civil Engineering, School of Environmental and Construction Technology, Kalasalingam Academy of Research and Education, Anandnagar, Krishnankoil, Virudhunagar Dt, India;4. DST-STI HUB Project, Kalasalingam Academy of Research and Education, Anandnagar, Krishnankoil, Virudhunagar Dt, India;5. Department of Mechanical Engineering, Saveetha School of Enginering, SIMATS, Chennai, Tamilnadu, India;1. College of Materials Science and Engineering, Chongqing University, Chongqing 400045, China;2. School of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China;1. Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia;2. Sustainable Deliverable, 140 N Wilson Ave, Pasadena, CA 91106, USA |
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| Abstract: | The effect of polypropylene and steel fibers on high strength lightweight aggregate concrete is investigated. Sintered fly ash aggregates were used in the lightweight concrete; the fines were partially replaced by fly ash. The effects on compressive strength, indirect tensile strength, modulus of rupture, modulus of elasticity, stress–strain relationship and compression toughness are reported. Compared to plain sintered fly ash lightweight aggregate concrete, polypropylene fiber addition at 0.56% by volume of the concrete, caused a 90% increase in the indirect tensile strength and a 20% increase in the modulus of rupture. Polypropylene fiber addition did not significantly affect the other mechanical properties that were investigated. Steel fibers at 1.7% by volume of the concrete caused an increase in the indirect tensile strength by about 118% and an increase in the modulus of rupture by about 80%. Steel fiber reinforcement also caused a small decrease in the modulus of elasticity and changed the shape of the stress–strain relationship to become more curvilinear. A large increase in the compression toughness was recorded. This indicated a significant gain in ductility when steel fiber reinforcement is used. |
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