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Proposed Methodology for Inter-Comparison of Steel Rebar Properties from Different Manufacturing Sources

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Title Proposed Methodology for Inter-Comparison of Steel Rebar Properties from Different Manufacturing Sources
 
Creator Karar, N.
Jain, Vipin
 
Subject Steel rebars
Different brands
Repeatability
Raman Spectra for standardization
 
Description 38-47
We propose a new method for checking steel quality and repeatability in microstructure using a combination of X-Ray diffraction (XRD) and Raman Spectral data analysis methodology1. Here, we discuss the case of steel rebars. We consider 23 different brands of steel rebars from across India. We did an inter-comparison of their elemental chemical composition using X-ray fluorescence (XRF) data, observed their crystalline properties using X-Ray diffraction (XRD) patterns, peak full width at half maximum (FWHM) values. The wet etched micrographs of their cross-sections were inter-compared to show the extent of variation. Even though the XRD data of these samples are similar, the wet etched micrographs along with the Raman spectral data varied a lot from brand to brand. Effects of halides, oxygen, nitrogen impurities on its long-term corrosion and degradation of rebars is also discussed. It is suggested that better convergence of Raman spectral data for all brands of steel rebars along with their FWHM values will replicate similar microstructural images across all brands and will thus ensure better formulation of uniform quality standards across all brands and ensure higher longevity of related civil engineering structures, irrespective of the brand.
 
Date 2023-12-27T05:10:14Z
2023-12-27T05:10:14Z
2023-12
 
Type Article
 
Identifier 0975-0959 (Online); 0301-1208 (Print)
http://nopr.niscpr.res.in/handle/123456789/63097
https://doi.org/10.56042/ijpap.v62i1.212
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJPAP Vol.62(01) (January 2024]