@article{fb84cf683c30498fb4ff130e1bd04607,
title = "The feasibility of short-wave infrared spectrometry in assessing water-to-cement ratio and density of hardened concrete",
abstract = "This paper describes the feasibility of using short-wave infrared (SWIR) spectrometry to classify concretes by their water-to-cement (w/c) ratios and predict their density. Concrete spectra of three w/c ratios (50%, 65%, 80%) were studied in the 1300–2200 nm range. A Partial Least Square Discriminant Analysis model was developed from the spectra of 36 samples, resulting in an 89% correct classification for the 18 validation samples, thereby demonstrating that SWIR spectrometry can detect differences in initial w/c ratios for hardened concretes. Additionally, differences in density and compressive strength as a function of the w/c ratio could be indirectly estimated through SWIR spectrometry.",
keywords = "Concrete, Concrete, Density, Inspection, Non-destructive testing, Short-wave infrared, Spectrometry, Water-to-cement ratio",
author = "Zohreh Zahiri and Laefer, {Debra F.} and Aoife Gowen",
note = "Funding Information: The authors wish to thank Mr. Donal Lennon, Mr. Derek Holmes, and Mr. John Ryan from UCD technician team, as well as Dr. Hugh Byrne and Luke O'Neill from Dublin Institute of Technology (DIT) for their support and assistance in conducting the experimental parts of the study. This work was supported by New York University's Center for Urban Science and Progress; and The European Research Council (ERC) [grant number ERC-2013-StG-335508—BioWater]. Funding Information: The authors wish to thank Mr. Donal Lennon, Mr. Derek Holmes, and Mr. John Ryan from UCD technician team, as well as Dr. Hugh Byrne and Luke O{\textquoteright}Neill from Dublin Institute of Technology (DIT) for their support and assistance in conducting the experimental parts of the study. This work was supported by New York University{\textquoteright}s Center for Urban Science and Progress ; and The European Research Council (ERC) [grant number ERC-2013-StG-335508 —BioWater]. Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",
year = "2018",
month = oct,
day = "10",
doi = "10.1016/j.conbuildmat.2018.07.082",
language = "English (US)",
volume = "185",
pages = "661--669",
journal = "Construction and Building Materials",
issn = "0950-0618",
publisher = "Elsevier Limited",
}