پیوستگی میلگردهای فولادی و پلیمری در بتن های خودتراکم

Document Type : Research Article

Authors

1 Assistant Professor , Civil Engineering Department, Shahid Rajaee Teacher Training University, Tehran

2 Ph.D. Student, School of Engineering Department, Gilan University, Rasht

Abstract

In this research, numerous tests have been carried out for estimating the bond strength of steel and FRP bars with self- compacting and normal concrete specimens. The main experimental part of the research was concentrated on a pull out test. Two mix designs have been used for making self- compacting concrete and super plasticizer dosages of the two mixes were different. Therefore, the effect of super plasticizer dosage on bonding strength is also studied in this research.
Comparing the pull out test results on self- compacting and normal concrete showed that in all conditions, the bonding of steel bars was more than that of FRP bars., Moreover, self- compacting concrete containing higher dosages of super plasticizers had more bonding strength. The existing models were not exactly enough for estimating the bonding strength of FRP bars. Therefore ABAQUS software is used for modeling this phenomenon, and two models including two and three dimensional models were compared. The results of this section showed that the three dimensional modeling was better than the others for estimating the experimental results.

Keywords

References

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