Shear behavior of unsaturated soils at constant suction (Record no. 106421)

MARC details
000 -LEADER
fixed length control field 04369nas a2200433 4500
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20260818213901.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 970807s1997 th uu m rtt 0| a1eng d
035 ## - SYSTEM CONTROL NUMBER
System control number .b11632471
099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC)
Classification number AIT Thesis no.GE-96-16
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Tamrakar, Surendra Bahadur
245 10 - TITLE STATEMENT
Title Shear behavior of unsaturated soils at constant suction
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Place of publication, distribution, etc. Bangkok :
Name of publisher, distributor, etc. Asian Institute of Technology,
Date of publication, distribution, etc. 1997
300 ## - PHYSICAL DESCRIPTION
Extent 167 leaves :
Other physical details ill. +
Accompanying material 1 online resource
490 1# - SERIES STATEMENT
Series statement Thesis ;
Volume/sequential designation no. GE-96-16
500 ## - GENERAL NOTE
General note A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Civil Engineering
502 ## - DISSERTATION NOTE
Dissertation note Thesis (M. Eng.) - Asian Institute of Technology
520 ## - SUMMARY, ETC.
Summary, etc. In order to investigate the unsaturated shear behavior of Khon Kaen loessial soil, triaxial tests were carried out in a specially modified triaxial apparatus. Specimens were statically compacted so that they had 1.2 kN/m3 initial density and 8 % initial water content which were similar to the field conditions. Consolidated drained triaxial tests were performed at three different confining pressures (50, I 00 and 200 kPa) with constant suction condition of 0, 10, 50,100 and 200 kPa. Axis translation technique was used for the making the initial suction condition before starting the tests. The apparatus being specially designed, we could measure the overall volume change of the sample more accurately than in conventional triaxial apparatus. Hence the shear behavior could be observed more precisely. Also, pore-air and pore-water pressures could be controlled separately in this test. The tests were performed in accordance with the programming. The test results showed that the amount of suction greatly influence the shear behavior of the soils. Stress-strain relationship of test results showed that initial slope (stiffness) of the curves are lower at the lower suction values, but the slope increases with the increase in suction. It is also seen that suction effect; an increase in suction increases the yield stress is dependent on the confining pressure. At lower confining pressure the effect of suction is higher than at the higher confining pressure where it decreases. From results of the volumetric strain and axial strain relationship, it is seen that with the increase in suction there is a decrease in volume change of the specimens. This is due to the increase in inhibition of plastic deformation of the sample with the increase in suction. Also, from e - logp' lines during shearing, we can see the decrease in slopes of these lines as the suction increases. At higher suction values, the amount of drainage increases with the mcrease m suction whereas at lower suction values, water goes into the sample. All of the changes in shear behavior of the unsaturated soils are due to the effect of suction which are explained by the Kohgo's elastoplastic model with two suction effects; (i) an increase in suction increases the effective stress and (ii) an increase in suction increases both the yield stress and stiffness against plastic deformation.
650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Shear strength of soils
General subdivision Testing
650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Strains and stresses
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Kohgo, Yuji,
Relator term Chairperson
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Balasubramaniam, A.S.,
Relator term Examination Committee
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Shibuya, Satoru,
Relator term Examination Committee
710 2# - ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element Government of Japan,
Relator term Scholarship Donor
810 2# - SERIES ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element Asian Institute of Technology.
Title of a work Thesis ;
Volume/sequential designation no. GE-96-16
856 ## - ELECTRONIC LOCATION AND ACCESS
Materials specified Full-Text
Uniform Resource Identifier <a href="http://203.159.5.9/ait-thesis/detail.php?q=B13423">http://203.159.5.9/ait-thesis/detail.php?q=B13423</a>
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998 ## - LOCAL CONTROL INFORMATION (RLIN)
Operator's initials, OID (RLIN) 0
Cataloger's initials, CIN (RLIN) 970807
First date, FD (RLIN) m
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942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type 22-AIT Thesis (Replacement)
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type 20-AIT Publication
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type 40-Archives
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Holdings
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      Available for Loans Asian Institute of Technology Library Asian Institute of Technology Library AIT Publications 18/08/2026 50.00   AIT Thesis no.GE-96-16 30050120718233 18/08/2026 3 18/08/2026 22-AIT Thesis (Replacement)
      Available for Loans Asian Institute of Technology Library Asian Institute of Technology Library AIT Publications 18/08/2026 50.00   AIT Thesis no.GE-96-16 30050120718209 18/08/2026 4 18/08/2026 20-AIT Publication
      Available for Loans Asian Institute of Technology Library Asian Institute of Technology Library Archives 18/08/2026     AIT Thesis no.GE-96-16 30050160081393 18/08/2026 1 18/08/2026 40-Archives
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