Correlation of constitutive response of hybrid textile reinforced concrete from tensile and flexural tests |
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| Affiliation: | 1. School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, AZ 85287-5306, United States;2. Material Engineering Department, Ben Gurion University, Israel;3. Structural Engineering Department, Ben Gurion University, Israel;1. Civil Engineering Department, COPPE, Universidade Federal do Rio de Janeiro, P.O. Box 68506, CEP 21941-972 Rio de Janeiro, RJ, Brazil;2. Department of Civil Engineering, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marques de São Vicente 225, 22451-900 Rio de Janeiro, RJ, Brazil;3. Centre for Mineral Technology (CETEM), Rio de Janeiro, RJ, Brazil;1. Department of Architecture, Built Environment and Construction Engineering, Politecnico di Milano (PoliMi), Milan, Italy;2. CIRI Buildings and Construction, University of Bologna (UniBO), Bologna, Italy;3. Department of Civil Engineering, University of Patras (UPatras), Patras, Greece;4. Department of Engineering, Roma3 University (UniRM3), Rome, Italy;5. University eCampus (UnieCampus), Novedrate, Italy;6. Faculty of Civil Engineering, Cracow University of Technology (CUT), Cracow, Poland;7. Certimac c/o Enea Temaf (Certimac), Laboratorio di ricerca analisi e prove, Faenza, Italy;8. University Claude Bernard Lyon 1 (Unilyon), Laboratory of Composite Materials for Construction (LMC2), Lyon, France;9. Department of Engineering for Innovation (UniLE), University of Salento, Lecce, Italy;10. Department of Civil, Architectural and Environmental Engineering, University of Padova (UniPD), Padua, Italy;1. Institute of Structural Concrete, RWTH Aachen University, Germany;2. Kempen Krause Ingenieure GmbH, Aachen, Germany;1. Dept. of Civil and Environmental Engineering, Chalmers University of Technology, Gothenburg 412 96, Sweden;2. Dept. of Construction Engineering, Universitat Politècnica de Catalunya – Barcelona Tech, Barcelona 08034, Spain;3. Dept. of Building Technology – Concrete, Danish Technological Institute, Taastrup 2630, Denmark;1. School of Sustainable Engineering and Built Environment, Arizona State University, Tempe, AZ 85287-8706, United States;2. Department of Civil Engineering, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rua Marques de São Vicente 225, 22451-900 Rio de Janeiro-RJ, Brazil;3. TU Dresden, Institute of Construction Materials, 01062 Dresden, Germany |
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| Abstract: | This papers addresses the disparities that exist in measuring the constitutive properties of thin section cement composites using a combination of tensile and flexural tests. It is shown that when the test results are analyzed using a simplified linear analysis, the variability between the results of tensile and flexural strength can be as high as 200–300%. Experimental results of tension and flexural tests of laminated Textile Reinforced Concrete (TRC) composites with alkali resistant (AR) glass, carbon, aramid, polypropylene textile fabrics, and a hybrid reinforcing system with aramid and polypropylene are presented. Correlation of material properties is studied analytically using a parametric model for simulation of flexural behavior using a closed form solution based on tensile stress–strain constitutive relation. The flexural load carrying capacity of TRC composites is computed using a back-calculation approach, and parameters for a strain hardening material model are obtained using the closed form equations. While the parametric model over predicts the simulated tensile response for carbon and polypropylene TRCs, predictions are however consistent with experimental trends for aramid and glass TRCs. Detailed discussion of the differences between backcalculated and experimental tensile properties is presented. Results can be implemented as average moment–curvature relationship in the structural design and analysis of cement composites. |
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| Keywords: | Beams Cracking Ductility Fibers Fiber reinforced concrete High-strength concrete Carbon fibers Polypropylene fibers Aramid fibers Alkali resistant glass fibers Textile reinforced concrete Flexural tests Tension tests Stress–strain Toughness Back-calculation |
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