CONSTRUCTION OF COMPOSITE REBARS AND INVESTIGATION OF THEIR BONDING TO CONCRETE

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REZA DOUST A.M.; ESFANDEH M.; SABET S.M.B.; ALAVI S.M.B.

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Paper Information

Journal: Iranian Journal of Polymer Science and Technology Year:2007 | Volume:20 | Issue:1 (ISSUE NO. 87) Page(s): 79-86

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Title

CONSTRUCTION OF COMPOSITE REBARS AND INVESTIGATION OF THEIR BONDING TO CONCRETE

Author(s)

REZA DOUST A.M. | ESFANDEH M. | SABET S.M.B. | ALAVI S.M.B. | Issue Writer Certificate

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Abstract

One of the methods used to overcome the corrosion problem associated with steel rebars in reinforced concrete is the application of composite rebars. In this study, composite rebars having four different surface configurations were constructed and examined. These include an externally wound FRP deformation on a pultruded rod (RT), pultruded rod with sand sprayed on the surface (RS) and a combination of the latest two methods (RTS). For comparison, a pultruded rod with a smooth surface (RO) was used in these experiments. To assess the bonding strength to concrete, rebars were embedded in concrete columns in embedment lengths of 10 and 15 times of rebar root diameter, 12 and 18 cm, and the pull out force as well as force-displacement behavior were evaluated. The results showed that an increase in surface roughness of composite rebars by whatever means, has a positive effect on increasing the adhesion of rebar to concrete. The RO composite rebar showed, however, the lowest bonding strength to concrete followed by RT, RS and RTS rebars. Bonding strength to concrete in rebars with FRP wounded surface was entirely controlled by bonding strength of the externally wound FRP to pultruded rods. Also, RTS rebars with embedment length of 12cm showed greater adhesion to concrete, whereas, in samples with embedment length of 18 cm, RTS and RS rebars showed close results. In all pull-out tests, sand sprayed and FRP wounded rebars, delamination of the surface configuration was the major mode of failure. In addition, RTS rebars showed the best performance in adhesion to concrete among the others.

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APA: Copy

REZA DOUST, A.M., ESFANDEH, M., SABET, S.M.B., & ALAVI, S.M.B.. (2007). CONSTRUCTION OF COMPOSITE REBARS AND INVESTIGATION OF THEIR BONDING TO CONCRETE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 20(1 (ISSUE NO. 87)), 79-86. SID. https://sid.ir/paper/6246/en

Vancouver: Copy

REZA DOUST A.M., ESFANDEH M., SABET S.M.B., ALAVI S.M.B.. CONSTRUCTION OF COMPOSITE REBARS AND INVESTIGATION OF THEIR BONDING TO CONCRETE. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2007;20(1 (ISSUE NO. 87)):79-86. Available from: https://sid.ir/paper/6246/en

IEEE: Copy

A.M. REZA DOUST, M. ESFANDEH, S.M.B. SABET, and S.M.B. ALAVI, “CONSTRUCTION OF COMPOSITE REBARS AND INVESTIGATION OF THEIR BONDING TO CONCRETE,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 20, no. 1 (ISSUE NO. 87), pp. 79–86, 2007, [Online]. Available: https://sid.ir/paper/6246/en

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