02021nas|a2200253 i 450000500170000000800410001703500150005810000280007324501290010126000520023030000150028249000270029750001330032450200570045752008590051465000440137365000430141770000370146070000440149770000420154171000600158381000590164385600650170220260818100036.0181100s2000    th  u m rtt  00|  a1eng d  a.b118157470 aChatchawan Boontongloan10aEngineering properties of the evaporitic and clastic rocks of Maha Sarakam formation, Sakon Nakhon evaporite basin, Thailand  aBangkok :bAsian Institute of Technology,c2000  a132 leaves1 aThesis ;vno. GE-99-04  a A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Civil Engineering   aThesis (M.Sc.) - Asian Institute of Technology, 2000  aThe engineering properties of the rock salt and claystone of the Maha Sarakam Formation were examined in the laboratory to find out engineering properties which will be important for future underground excavation works. Test results showed that the rock salt and elastic rock were classified as low and very low strength rock, respectively. For the rock salt, uniaxial creep test was carried out under various stress levels at room temperature. The results showed that the empirical power function can be used to describe strain-time relation of the test results. Parameter A of the rock salt is in range of 1.44 to 23.43 (time is in minute). Creep Index (B) obtained from slope of the strain-time plot in log-log scale are 0.006 to 0.195, which indicates low creep response. For the claystone slake durability tests indicated low durability of the rock.10aRock mechanicsxThailandxMaha Sarakham10aRock mechanicsxThailandxSakon Nakhon0 aNoppadol Phien-Wej,eChairperson0 aPrinya Nutalaya,eExamination committee1 aDer-Guey, Lin,eExamination committee2 aThe Asia Pacific Potash Corp., Ltd.,eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. GE-99-04  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B06950