کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
259587 503638 2012 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modelling the compressive mechanical behaviour of granite and sandstone historical building stones
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Modelling the compressive mechanical behaviour of granite and sandstone historical building stones
چکیده انگلیسی

Building stones, particularly sandstone and granite, are very important in the building elements of Portugal’s historical and cultural heritage. Experimental research, based on uniaxial compressive tests, was carried out on selected representative samples of lithotypes of rocks used in historic built heritage, with a view to evaluating the compressive mechanical behaviour of different building stones. The results showed that porosity plays a central role in the compressive behaviour of granites and sandstones. As porosity can be evaluated in field conditions with non-destructive tests it was decided to derive an analytical model to predict compressive behaviour based on the knowledge of porosity of the building stones. A cubic polynomial function was adopted to describe the pre-peak regime under compression to implement the model. Furthermore, a statistical correlation between mechanical and porosity data had to be defined. Good agreement between experimental and analytical compressive stress–strain diagrams, from which the mechanical properties like compressive strength and modulus of elasticity can be derived, was achieved.

Figure optionsDownload as PowerPoint slideHighlights
► Compressive behaviour is influenced largely by porosity.
► Analytical model describes the compressive mechanical behaviour of building stones.
► This model is well defined by a cubic polynomial function.
► A good agreement between the analytical and experimental results was found.
► Mechanical properties can be estimated without DT of samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 28, Issue 1, March 2012, Pages 372–381
نویسندگان
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