Electromagnetism in taking concrete behavior on demand. (October 2020)

• Record Type: Journal Article
• Authors: Safari Tarbozagh, Alireza; Rezaifar, Omid; Gholhaki, Majid
• Is Part Of: Structures. Volume 27(2020)
• Page Start: 1057
• Page End: 1065
• Publication Date: 2020-10
• Subjects: Alternating magnetic field (AMF) -- Concrete -- Compressive strength -- Smart structure; Structural engineering -- Periodicals; 624.1
• DOI: 10.1016/j.istruc.2020.07.025
• Languages: English
• ISSNs: 2352-0124

Abstract

Abstract: Developing new techniques for improving concrete structures performances has resulted in invention of different methods, such as designing smart concrete elements. This study aims to evaluate effectiveness of employing Alternating Magnetic Field (AMF 1 ) in enhancing concrete properties and controlling its behavior. Therefore, some experiments were conducted on some concrete cylindrical specimens, where the effect of applying AMF to fresh and hardened concrete on the compressive strength of 7 and 8-day specimens was investigated. For experiments a test setup was designed in a way that AMF (of power 0.5 T 2 and frequency 50 Hz) and compressive force could be applied to concrete specimens, simultaneously. It was observed that exposing fresh and hardened concrete to AMF improves compressive strength, where this effect is more significant as to magnetizing hardened concrete. Moreover, the effectiveness of AMF was more significant for 7-day concrete compared to 28-day one. The fact that compressive strength of hardened concrete increases in the presence of AMF, in real time, was discussed as to feasibility of constructing smart concrete elements via this techniques.