Investigation on creep behavior of salt rock under high temperature with impression technique
Impression creep test, which involves loading on a small area of the specimen with a flattipped cylindrical punch, is a new method used for rocks in this research. This uniaxial compression method enables testing of very small volumes of material with minimal required sample preparation. One of the attractive features of the impression creep test is its ability to establish steady-state creep behavior within a very short time. The tests are carried out under constant stress (in the range of 30- 65 MPa) and at temperatures in the range of 250 -350℃ . Assuming a power law relation between the creep rate and applied stress, values of 3.28 and 4.72 are obtained for stress exponent (n) at low and high temperatures whereas the range for Q value (activation energy) was obtained as 40.7 and 27.0 kJ/mol again at low and high temperature.
M.Moosavi M.Jafari F.S.Rassouli
The University of Tehran, Tehran
国际会议
香港
英文
1-5
2009-05-19（万方平台首次上网日期，不代表论文的发表时间）