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Saturday, October 6, 2012

SF 9011 MECHANICS OF UNSATURATED SOILS SYLLABUS | ANNA UNIVERSITY ME SOIL MECHANICS AND FOUNDATION ENGINEERING 1ST SEM SYLLABUS REGULATION 2009 2011 2012-2013

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SF 9011 MECHANICS OF UNSATURATED SOILS SYLLABUS | ANNA UNIVERSITY ME SOIL MECHANICS AND FOUNDATION ENGINEERING 1ST SEM SYLLABUS REGULATION 2009 2011 2012-2013 BELOW IS THE ANNA UNIVERSITY FIRST SEMESTER ME SOIL MECHANICS AND FOUNDATION ENGINEERING DEPARTMENT SYLLABUS, TEXTBOOKS, REFERENCE BOOKS,EXAM PORTIONS,QUESTION BANK,PREVIOUS YEAR QUESTION PAPERS,MODEL QUESTION PAPERS, CLASS NOTES, IMPORTANT 2 MARKS, 8 MARKS, 16 MARKS TOPICS. IT IS APPLICABLE FOR ALL STUDENTS ADMITTED IN THE YEAR 2011 2012-2013 (ANNA UNIVERSITY CHENNAI,TRICHY,MADURAI,TIRUNELVELI,COIMBATORE), 2009 REGULATION OF ANNA UNIVERSITY CHENNAI AND STUDENTS ADMITTED IN ANNA UNIVERSITY CHENNAI DURING 2009

SF 9011 MECHANICS OF UNSATURATED SOILS L T P C
3 0 0 3
OBJECTIVE:
 At the end of this course students attains adequate knowledge in assessing
both physical and engineering behaviour of unsaturated soils, measurement
and modeling of suction – water content and suction – hydraulic conductivity
of unsaturated soils.
UNIT I STATE OF UNSATURATED SOIL 6
Definition – Interdisciplinary nature of unsaturated soil – soil classification – Nature
and practice – stress profiles, stress state variables - material variables –
constitutive law – suction potential of soil water
UNIT II PHYSICS OF SOIL WATER SYSTEM 9
Physical properties of Air and water – partial pressure and relative Humidity Density
of moist air – surface Tension – cavitations of water. Solubility of Air in water – Air –
water solid interface – vapor pressure lowering – soil water characteristic-curve.
Capillary tube model – contacting sphere model. Young Laplace equation – Height
of capillary rise – Rate of capillary rise – capillary pore size distribution – theoretical
basis – determination – laboratory method.
UNIT III STRESS STATE VARIABLES AND SHEAR STRENGTH 12
Effective-stress – stress between two spherical particles – Hysteresis in SWCC –
stress parameter, stress tensor – stress control by Axis Translation - analytical
representation of stress – volume change characteristics. Extended Mohr – Coulomb
criterion – shear strength parameters – Interpretation of Direct shear test results and
Tri axial test results – unified representation of failure envelope – Influence of suction
in earth pressure distribution.
UNIT IV STEADY AND TRANSIENT FLOWS 9
Driving mechanism – Permeability and Hydraulic conductivity – capillary barriers –
steady infiltration and evaporation – Vapor flow – Air diffusion in water. Principles for
pore liquid flow – Rate of infiltration, Transient suction and moisture profiles.
Principles for Pore Gas flow – Barometric pumping Analysis.
UNIT V MATERIAL VARIABLE MEASUREMENT AND MODELLING 9
Measurement of total suction – psychrometers – Filter paper measurement of matric
suction – High Air Entry disks – Direct measurements – Tensiometers – Airtranslation
technique – Indirect measurements – Thermal conductivity sensors –
measurement of osmotic suction – squeezing technique – soil water characteristic
curves and Hydraulic conductivity models.
TOTAL: 45 PERIODS
REFERENCES:
1. Fredlund, D.G. and Rahardjo, H. Soil Mechanics for unsaturated soils, John
Wiley & Sons, INC, New York.2003.
2. Ning Lu and William, J. Likes, Unsaturated Soil Mechanics, John Wiley &
sons, INC. New Jersey, 2004
3. Ng Charles, W.W., Menzies Bruce, Advanced unsaturated Soil Mechanism
and Engineering, Taylor & Francis Group, 2007.
4. Ning Lu, Laureano R. Hoyes and Lakshmi Reddi, Advances in unsaturated
soil, seepage and Environmental Geotechnics, ASCE., Geotechnical special
publication No.148.

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