期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 22, 期 7, 页码 1456-1461出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2007.04.002
关键词
granite rock; thermal cracking; porosity; permeability; ultrasonic waves
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 degrees 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. (C) 2007 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据