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OALib Journal期刊
ISSN: 2333-9721
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孔隙率与饱和度对粉土导热特性的影响
DOI: 10.3969/j.jssn.1000-2006.2012.02.009, PP. 42-46
Keywords: 粉土,导热系数,体积比热容,孔隙率,饱和度,三相构成
Abstract:
为了研究孔隙率与饱和度对粉土热物理特性的影响,采用isomet热特性分析仪对苏州粉土、郑州粉土的重塑样及原状样热物理参数进行测试,从土体三相构成角度分析了粉土热物理参数(导热系数和体积比热容)与孔隙率及饱和度的演化关系。结果表明:当孔隙率一定时,粉土导热系数和体积比热容都随着饱和度增大而增大。粉土的饱和度存在一个临界值,当饱和度小于该临界值时,体积比热容随着孔隙率的增大而减少。孔隙率、饱和度与导热系数成非线性关系,与体积比热容成线性关系。
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