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论文类型：期刊论文

发表时间：2012-04-01

发表刊物：Transactions of Tianjin University

收录刊物：EI

卷号：18

期号：2

页面范围：112-116

ISSN号：10064982

摘要：Uniaxial compression experiments on horizontal and vertical samples of first-year freshwater ice in a reservoir were conducted at different temperatures and strain rates with an electronic universal machine equipped with low temperature cabinet. The results show that there is no difference between the strengths of two horizontal samples with grain sizes ranging from 1 to 4,mm and 4 to 14,mm, while the strength of the 1 - 4 mm vertical samples is 1.4 times higher than that of the 4 - 14 mm vertical samples because of the change of crystal structure. For different loading directions, the strengths of the horizontal samples do not differ from those of the vertical samples with the same grain sizes. The relation among the uniaxial compressive strength, strain rate and temperature was established through data analysis in both the ductile and brittle regions. © Tianjin University and Springer-Verlag Berlin Heidelberg 2012.