کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5112651 1483951 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Eco-compatible protective treatments on an Italian historic mortar (XIV century)
ترجمه فارسی عنوان
درمان های محافظتی سازگار با محیط زیست بر روی یک ملات تاریخی ایتالیا (قرن چهاردهم)
کلمات کلیدی
خمپاره های تاریخی، تعیین مشخصات، جذب آب، درمان های محافظتی نانوذرات،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
This paper reports significant results about the effects of repeated treatments to protect a mediaeval Italian mortar from capillarity-absorbed water, by using for the treatments, our no-commercial hydro-alcoholic suspensions of calcium hydroxide nanoparticles (nanolime). The mortars samples came from the historical site, where preliminary thermographic inspection were performed to detect the damp zones. Before treatments, the samples were analyzed from a mineralogical and chemical point of view, by means of several techniques, as optical microscopy (OM), thin section observations (PFM), porosimetric investigations, X-ray fluorescence (XRF), X-ray diffraction (XRD), infrared spectroscopy (FT-IR) and thermal analysis (TG-DTA). The size-grading curve of the aggregate and the binder/aggregate ratio were examined too. Then, the efficacy of nanolime protective treatments on this mortar versus the nanolime concentrations was investigated. For this aim, capillarity tests as well as porosimetric investigations, before and after the treatments, were performed. The obtained results were remarkably promising both in terms of the reduction of water absorbed by capillarity (up to 60%) together with an adequate decrease of porosity (up to 23%), fixing the protective effect of such eco-friendly and very compatible approach.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Cultural Heritage - Volume 25, May–June 2017, Pages 135-141
نویسندگان
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