Physical Properties of Sandstones After High Temperature Treatment
Physical Properties of Sandstones After High Temperature Treatment
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DOI：
10.1007/s00603-012-0228-z
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发表时间：
2012-11-01
影响因子：
6.2
通讯作者：
Ziegler, Martin
中科院分区：
文献类型：
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作者：
Tian, Hong;Kempka, Thomas;Ziegler, Martin
在低于岩石熔点的高温的影响下，岩石的微观结构发生了显著变化（Dwivedi等人，2008年），新的微裂纹出现，原有的微裂纹扩展/加宽（Den'gina等人，1994年）。与此同时，岩石基质中发生各种物理和矿物学变化。冷却至室温后，热致变化在一定程度上是不可逆的。因此，从宏观的角度来看，岩石的物理性质是温度历史依赖的，因为它们依赖于经历的最高温度。对这一问题的了解是成功实施现代岩土工程项目的关键因素，例如核废料储存（Sundberg等人，2009年）、地下煤气化（Roddy和
Under the influence of high temperatures below the rock melting point, rock micro-structures change significantly (Dwivedi et al. 2008), new micro-cracks are developed, and pre-existing ones extended/widened (Den’gina et al. 1994). Meanwhile, various physical and mineralogical changes take place in the rock matrix. After cooling down to room temperature, thermal-induced changes are irreversible to some extent. Hence, rock physical properties from a macroscopic point of view are temperature-history dependent as they rely on the maximum temperature experienced. Knowledge on this issue is a key factor for successful implementation of modern geotechnical engineering projects, such as nuclear waste storage (Sundberg et al. 2009), underground coal gasification (Roddy and