Investigation of the effect of uniform magnetic field on the bond strength of rebar in concrete containing quartz aggregates using pull-out test

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TAHERI MAJID; Rezaifar Omid; KHEYRODDIN ALI

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Journal Paper

Paper Information

Journal: JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING Year:2022 | Volume:9 | Issue:1 Page(s): 174-187

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Information Journal Paper

Title

Investigation of the effect of uniform magnetic field on the bond strength of rebar in concrete containing quartz aggregates using pull-out test

Author(s)

TAHERI MAJID | Rezaifar Omid | KHEYRODDIN ALI | Issue Writer Certificate

Keywords

uniform magnetic field

Alternating current

Bond strength

Quartz sandstone coarse aggregate

Pull-out test

Abstract

The present study was an attempt to investigate the effect of direct and uniform magnetic field on concrete-steel rebar Bond strength in fresh and hardened concrete specimens containing quartz aggregates using Pull-out test. Moreover, compressive strength test was performed on all magnetic and non-magnetic specimens at 28 days of concrete age in order to investigate the effect of compressive strength of concrete on Bond strength. In the present study, a concrete mixture containing smart quartz aggregate was designed for a compressive strength of 30 MPa. The water to cement ratio was selected to be 0. 4 for concrete mixes. The method of fabrication and processing of samples was performed according to ASTM C192. Accordingly, first one-third of the fine-grained and one-third of the mixing water were added to the mixer with one-third. The remaining cement and water were gradually added to the concrete mix. At the end, superplasticizer was gradually added to the concrete mix for 1 to 2 minutes and then the concrete mixing process was continued for 3 minutes. In order to prevent the magnetic field from being absorbed by the concrete mold, concrete samples were sampled in plastic molds. Concrete samples were covered with a wet sack at a temperature of 20–, 22 °,C for 24 hours and then removed from the formwork and stored under moist conditions until the experimental age. The device used in this study is able to convert electricity into a uniform magnetic field with an intensity of 0. 5 Tesla. According to the results, the failures in all specimens are of slip type with no fissure cracks. The results also showed that applying a magnetic field to the concrete can lead to enhancement of Bond strength by about 55% and 73%, in 14 and 20 mm rebar respectively.

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APA: Copy

TAHERI, MAJID, Rezaifar, Omid, & KHEYRODDIN, ALI. (2022). Investigation of the effect of uniform magnetic field on the bond strength of rebar in concrete containing quartz aggregates using pull-out test. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 9(1 ), 174-187. SID. https://sid.ir/paper/1030326/en

Vancouver: Copy

TAHERI MAJID, Rezaifar Omid, KHEYRODDIN ALI. Investigation of the effect of uniform magnetic field on the bond strength of rebar in concrete containing quartz aggregates using pull-out test. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2022;9(1 ):174-187. Available from: https://sid.ir/paper/1030326/en

IEEE: Copy

MAJID TAHERI, Omid Rezaifar, and ALI KHEYRODDIN, “Investigation of the effect of uniform magnetic field on the bond strength of rebar in concrete containing quartz aggregates using pull-out test,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 9, no. 1 , pp. 174–187, 2022, [Online]. Available: https://sid.ir/paper/1030326/en

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