کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
261226 503688 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of thermal damage on physical properties of a granite rock: Porosity, permeability and ultrasonic wave evolutions
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Influence of thermal damage on physical properties of a granite rock: Porosity, permeability and ultrasonic wave evolutions
چکیده انگلیسی

In this paper, parameters for characterization of connected porosity and overall damage in the thermally-cracked rock of granite in order to assess, respectively, its transport properties and its mechanical strength are identified and quantified. Samples were heated to a range of peak temperatures up to 600 °C at ambient pressure. Characterizations were made by measurement of porosity, gas permeability, velocity and attenuation of ultrasonic waves. Our study confirms the strong influence of thermal damage on physical properties, and shows clearly the potential of the above techniques in connection with this type of damage. Typically, we show that the porosity measurement only informs about open porosity, which is distributed and available at rock surface, whereas the gas permeability measurement characterizes the connected porosity. As for the ultrasonic wave propagation, it is sensitive to overall damage in the material. Nevertheless, we observed that the three techniques are complementary and similarly describe the rock behavior in each stage of heat treatment; they show a good consistency between them.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 22, Issue 7, July 2008, Pages 1456–1461
نویسندگان
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