TY - JOUR
T1 - Enabling phase quantification of anhydrous cements via Raman imaging
AU - Polavaram, Krishna C.
AU - Garg, Nishant
N1 - Funding Information:
This research was carried out in part in the Materials Research Laboratory Central Research Facilities , Microscopy Suite at the Beckman Institute of Advanced Science and Technology , and Core Facilities at the Carl R. Woese Institute of Genomic Biology at the University of Illinois . The authors acknowledge support from the U.S Department of Energy's Nuclear Energy University Program ( DOE-NEUP: DE- NE0008886 ). The authors also acknowledge Argos USA, CalPortland Company, Central Plains Cement Company, Lafarge Holcim, and Lehigh (Heidelberg Cement Group) for supplying the cement samples. In addition, the authors acknowledge the help received from Mr. Jacob Doehring, an undergraduate research intern at the CEE department, University of Illinois for assisting in sample preparation in 2020. Finally, the authors acknowledge the two anonymous reviewers who greatly helped in improving this manuscript.
Funding Information:
This research was carried out in part in the Materials Research Laboratory Central Research Facilities, Microscopy Suite at the Beckman Institute of Advanced Science and Technology, and Core Facilities at the Carl R. Woese Institute of Genomic Biology at the University of Illinois. The authors acknowledge support from the U.S Department of Energy's Nuclear Energy University Program (DOE-NEUP: DE- NE0008886). The authors also acknowledge Argos USA, CalPortland Company, Central Plains Cement Company, Lafarge Holcim, and Lehigh (Heidelberg Cement Group) for supplying the cement samples. In addition, the authors acknowledge the help received from Mr. Jacob Doehring, an undergraduate research intern at the CEE department, University of Illinois for assisting in sample preparation in 2020. Finally, the authors acknowledge the two anonymous reviewers who greatly helped in improving this manuscript.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/12
Y1 - 2021/12
N2 - The phase composition of Portland cements is typically determined using conventional techniques like X-ray Diffraction (XRD) Rietveld analysis, optical microscopy point counting, and electron microscopy. However, these techniques have several limitations that may affect their accuracy in certain sample-specific scenarios. Here, we report a highly accurate phase quantification of 11 different types of commercial, anhydrous cements using a new and complementary technique: Raman imaging. Specifically, for the 4 principal phases, composition from our extensive data (250,000 Raman spectra per sample, error < 0.71%) and those obtained from XRD Rietveld and supplier data have high coefficients of determination (R2 > 0.98, mean deviation <2%). Additionally, we also quantify 8 secondary phases present in cement clinkers (gypsum, anhydrite, bassanite, syngenite, dolomite, calcite, quartz, and portlandite) with a high degree of confidence, thereby demonstrating that Raman imaging is a highly versatile tool for anhydrous phase quantification in a broad variety of cements.
AB - The phase composition of Portland cements is typically determined using conventional techniques like X-ray Diffraction (XRD) Rietveld analysis, optical microscopy point counting, and electron microscopy. However, these techniques have several limitations that may affect their accuracy in certain sample-specific scenarios. Here, we report a highly accurate phase quantification of 11 different types of commercial, anhydrous cements using a new and complementary technique: Raman imaging. Specifically, for the 4 principal phases, composition from our extensive data (250,000 Raman spectra per sample, error < 0.71%) and those obtained from XRD Rietveld and supplier data have high coefficients of determination (R2 > 0.98, mean deviation <2%). Additionally, we also quantify 8 secondary phases present in cement clinkers (gypsum, anhydrite, bassanite, syngenite, dolomite, calcite, quartz, and portlandite) with a high degree of confidence, thereby demonstrating that Raman imaging is a highly versatile tool for anhydrous phase quantification in a broad variety of cements.
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U2 - 10.1016/j.cemconres.2021.106592
DO - 10.1016/j.cemconres.2021.106592
M3 - Article
AN - SCOPUS:85114789088
SN - 0008-8846
VL - 150
JO - Cement and Concrete Research
JF - Cement and Concrete Research
M1 - 106592
ER -