دورية أكاديمية
أعرض في EDS

Utilizing optical spectroscopy and 2',7'-difluorofluorescein to characterize the early stages of cement hydration.

التفاصيل البيبلوغرافية
العنوان: Utilizing optical spectroscopy and 2',7'-difluorofluorescein to characterize the early stages of cement hydration.
المؤلفون: Pauli J; Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, D-12489 Berlin, Germany., Ramírez A; Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, D-12489 Berlin, Germany.; Division Technology of Con-struc-ti-on Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany., Crasselt C; Division Technology of Con-struc-ti-on Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany., Schmidt W; Division Technology of Con-struc-ti-on Materials, Bundesanstalt für Materialforschung und -prüfung (BAM), Unter den Eichen 87, D-12205 Berlin, Germany., Resch-Genger U; Division Biophotonics, Bundesanstalt für Materialforschung und -prüfung (BAM), Richard-Willstaetter Str. 11, D-12489 Berlin, Germany.
المصدر: Methods and applications in fluorescence [Methods Appl Fluoresc] 2021 Oct 28; Vol. 10 (1). Date of Electronic Publication: 2021 Oct 28.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: IOP Publishing Country of Publication: England NLM ID: 101608648 Publication Model: Electronic Cited Medium: Internet ISSN: 2050-6120 (Electronic) Linking ISSN: 20506120 NLM ISO Abbreviation: Methods Appl Fluoresc Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Bristol : IOP Publishing, 2013-
مواضيع طبية MeSH: Calcium Compounds* , Water*, Fluoresceins ; Silicates ; Spectrum Analysis
مستخلص: The increasingly sophisticated nature of modern, more environmentally friendly cementitious binders requires a better understanding and control particularly of the complex, dynamic processes involved in the early phase of cement hydration. In-situ monitoring of properties of a constantly changing system over a defined period of time calls for simple, sensitive, fast, and preferably also non-invasive methods like optical spectroscopy. Here, we exploit the time-dependent changes in the absorbance and fluorescence features of the negatively charged optical probe 2',7'-difluorofluorescein (DFFL) for the study of the hydration processes in pastes of white cement (WC), cubic tricalcium aluminate (C 3 A), and tricalcium silicate (C 3 S), the main phases of cement, and in pastes of quartz (Q) over 24 h after addition of the dye solution. For comparison, also conventional techniques like isothermal heat flow calorimetry were applied. Based upon the time-dependent changes in the spectroscopic properties of DFFL, that seem to originate mainly from dye aggregation and dye-surface interactions and considerably vary between the different pastes, molecular pictures of the hydration processes in the cement pastes are derived. Our results clearly demonstrate the potential of optical spectroscopy, i.e., diffuse reflectance, steady state and time-resolved fluorometry in conjunction with suitable optical reporters, to probe specific hydration processes and to contribute to a better understanding of the early hydration processes of cement at the molecular scale.
(Creative Commons Attribution license.)
فهرسة مساهمة: Keywords: 2′; 7′-difluorofluorescein; cement; cement hydration; fluorescence; optical spectroscopy
المشرفين على المادة: 0 (Calcium Compounds)
0 (Fluoresceins)
0 (Silicates)
059QF0KO0R (Water)
2044-85-1 (diacetyldichlorofluorescein)
تواريخ الأحداث: Date Created: 20211007 Date Completed: 20211101 Latest Revision: 20211101
رمز التحديث: 20231215
DOI: 10.1088/2050-6120/ac2da0
PMID: 34619671
قاعدة البيانات: MEDLINE
الوصف
تدمد:2050-6120
DOI:10.1088/2050-6120/ac2da0