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10.6028/jres.116.011 http://scihub22266oqcxt.onion/10.6028/jres.116.011 C4550334!4550334!26989590     free     free     free Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\26989590.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117       J+Res+Natl+Inst+Stand+Technol 2011 ; 116 (3): 655-69 Nephropedia Template TP {{tp|p=26989590|t=2011. Electromagnetic Metrology on Concrete and Corrosion* |pdf=|usr=}}{{26989590}} gab.com Text Electromagnetic Metrology on Concrete and Corrosion* JO: J Res Natl Inst Stand Technol http://www.kidney.de/pget.php?&tw=1&pmid=26989590 #FOAvip To augment current methods for the evaluation of reinforcing bar (rebar) corrosion within concrete, we are exploring unique features in the dielectric and magnetic spectra of pure iron oxides and corrosion samples. Any signature needs to be both prominent and consistent in order to identify corrosion within concrete bridge deck or other structures. In order to measure the permittivity and propagation loss through concrete as a function of temperature and humidity, we cut and carefully fitted samples from residential concrete into three different waveguides. We also poured and cured a mortar sample within a waveguide that was later measured after curing 30 days. These measurements were performed from 45 MHz to 12 GHz. Our concrete measurements showed that the coarse granite aggregate that occupied about half the sample volume reduced the electromagnetic propagation loss in comparison to mortar. We also packed ground corrosion samples and commercially available iron-oxide powders into a transmission-line waveguide and found that magnetite and corrosion sample spectra are similar, with a feature between 0.5 GHz and 2 GHz that may prove useful for quantifying corrosion. We also performed reflection (S11) measurements at various corrosion surfaces and in loose powders from 45 MHz to 50 GHz. These results are a first step towards quantifying rebar corrosion in concrete. Twit Text FOAVip Electromagnetic Metrology on Concrete and Corrosion* ????J Res Natl Inst Stand Technol http://www.kidney.de/pget.php?&tw=1&pmid=26989590 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=26989590 #FOAvip English Wikipedia <ref>{{Cite pmid|26989590}}</ref> Electromagnetic Metrology on Concrete and Corrosion* #MMPMID26989590 Kim S; Surek J; Baker-Jarvis J J Res Natl Inst Stand Technol 2011[May]; 116 (3): 655-69 PMID26989590show ga To augment current methods for the evaluation of reinforcing bar (rebar) corrosion within concrete, we are exploring unique features in the dielectric and magnetic spectra of pure iron oxides and corrosion samples. Any signature needs to be both prominent and consistent in order to identify corrosion within concrete bridge deck or other structures. In order to measure the permittivity and propagation loss through concrete as a function of temperature and humidity, we cut and carefully fitted samples from residential concrete into three different waveguides. We also poured and cured a mortar sample within a waveguide that was later measured after curing 30 days. These measurements were performed from 45 MHz to 12 GHz. Our concrete measurements showed that the coarse granite aggregate that occupied about half the sample volume reduced the electromagnetic propagation loss in comparison to mortar. We also packed ground corrosion samples and commercially available iron-oxide powders into a transmission-line waveguide and found that magnetite and corrosion sample spectra are similar, with a feature between 0.5 GHz and 2 GHz that may prove useful for quantifying corrosion. We also performed reflection (S11) measurements at various corrosion surfaces and in loose powders from 45 MHz to 50 GHz. These results are a first step towards quantifying rebar corrosion in concrete. äElectromagnetic Metrology on Concrete and Corrosion* (epmc).pdf DeepDyve Pubget Overpricing