Finite Element and Experimental Analysis of Bond Behavior Between Reinforcement and Concrete Containing Fibers, Silicafume and Nanosilica | ||
| مدل سازی در مهندسی | ||
| Article 11, Volume 16, Issue 54, October 2018, Pages 153-166 PDF (1.79 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.22075/jme.2017.5812. | ||
| Authors | ||
| Hamid Eskandari* ; Masoud Nematinejad | ||
| Receive Date: 13 February 2016, Revise Date: 15 July 2017, Accept Date: 04 October 2017 | ||
| Abstract | ||
| Bond behavior between reinforcement and concrete, due to increasing application of reinforced concrete, is one of the most important issues all over the world. In this research, which has been done experimentally and finite element (FE) modeling (using ABAQUS software), 36 mixtures are deigned considering three cement strength grades and various percentages of polymer fibers, silica fume and nano-silica. The effects of these admixtures on the bond behavior between concrete and reinforcement and also the compressive strength of concrete are investigated. The method of applying nonlinear spring (translator) for finite element modeling is presented and the model is analyzed using nonlinear dynamic analysis. The results yielded acceptable correlation between experimental and FE model. Since there are some translators in model, it can be mentioned that the results of bond slip are not influenced by meshing algorithm. Moreover, comparison of the experimental and FE results showed that while the effect of fiber in bond strength is negligible, it can be so effective in determining the failure shape. The combination of silica fume and nano silica can also improve the bond strength about 20% so that applying equal amount of these two admixtures may leads to the best strength results. | ||
| Keywords | ||
| Concrete; Fibers; Silica Fume; Nanosilica; Bond behavior; Finite element modeling; nonlinear dynamic analysis; Pull-out Test | ||
| References | ||
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