کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
256007 503538 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemical imaging of historical mortars by Raman microscopy
ترجمه فارسی عنوان
تصویربرداری شیمیایی خمپاره های تاریخی توسط میکروسکوپ رامان
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی


• Chemical images with approx. 500 nm resolution were acquired by Raman microscopy.
• Clinker remnants in 19th-century Roman and Portland cement stone were analysed.
• Gypsum mortars from the Middle Ages and early 20th century were analysed as well.
• Alite, tricalciumaluminate, wollastonite, gypsum, and anhydrite were identified.
• Dedolomitisation of accessory mineral grains in gypsum mortar was visualised.

Raman microspectroscopic imaging was just recently introduced into the analysis of cement stone. Here, we demonstrate this approach on 19th-century Roman and Portland cement mortars and extend it to gypsum-based samples originating from a medieval stucco sculpture (high-burnt gypsum) and a stucco ornament prefabricated at the beginning of the 20th century (plaster of Paris). Furthermore, the distributions of dolomite and calcite were mapped in an accessory mineral grain with approx. 500 nm lateral resolution demonstrating the ability for studying alteration processes such as dedolomitisation. As we would like to make this approach accessible to other researchers, we discuss its present status, advantages, limitations and pitfalls.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 114, 1 July 2016, Pages 506–516
نویسندگان
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