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.
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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