Flexural behavior of stratified reinforced concrete: construction,testing, analysis,and design |
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Authors: | Ivan Navarrete Matias A. Hube Yahya Kurama Mauricio Lopez |
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Affiliation: | 1.Department of Construction Engineering and Management, School of Engineering,Pontificia Universidad Catolica de Chile,Santiago,Chile;2.Department of Structural and Geotechnical Engineering, School of Engineering,Pontificia Universidad Catolica de Chile,Santiago,Chile;3.Department of Civil & Environmental Engineering & Earth Sciences, College of Engineering,University of Notre Dame,Notre Dame,USA;4.Center for Sustainable Urban Development (CEDEUS),Pontificia Universidad Catolica de Chile,Santiago,Chile |
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Abstract: | Stratified concrete poses a promising alternative for construction. Its fresh and hardened properties have been studied at the material level; however, structural behavior in steel reinforced specimens has not been studied. This paper focuses on the flexural behavior of eight stratified reinforced concrete (SRC) specimens representing slices from a slab or non-bearing wall. Specimens with two stratified concrete designs and three steel ratios were tested and compared to estimates from a fiber element numerical model and rectangular stress-block design methods from ACI 318 and Eurocode 2. The results suggest that SRC has similar damage modes as ordinary reinforced concrete (ORC). The fiber element model accurately estimated the measured behavior, while ACI 318 and Eurocode 2 differed from the experimental results by <25%. These prediction accuracies are similar to those for ORC. Therefore, the flexural design of SRC can be done using both fiber element and rectangular stress-block approaches. |
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