Using micro X-ray fluorescence to image chloride profiles in concrete

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• 作者：Mehdi Khanzadeh Moradllo^a ; ^{mehdi.khanzadeh_moradllo@okstate.edu} ; Bryan Sudbrink^a ; Qinang Hu^a ; Mohammed Aboustait^a ; Braden Tabb^a ; M. Tyler Ley^a ; Jeffrey M. Davis^b
• 关键词：μXRF ; Service life ; Durability ; Chloride ; Corrosion
• 刊名：Cement and Concrete Research
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：92
• 期：Complete
• 页码：128-141
• 全文大小：4946 K
• 卷排序：92

文摘

μXRF is a non-destructive X-ray imaging technique used to find Cl profiles in concrete with minimal sample preparation. The average Cl penetration at comparable depths is similar between profile grinding and μXRF. The apparent Cl diffusion coefficient was on average 30% higher for μXRF than profile grinding. μXRF can be used to image cracks > 100 μm in concrete and their impact on local Cl penetration. μXRF provides important insights into samples not possible with profile grinding.