COURSE OBJECTIVE To get exposure on the properties of expansive soils and to study about the substructures placed on expansive soils. COURSE OUTCOMES At the end of the course, students will be able to CO1: To Assess the occurrence and distribution of expansive soils. CO2: To Study the properties of expansive soils and the controlling techniques. CO3: To Understand various methods of stabilization of expansive soils and foundations used in expansive soils. CO4: Design foundations on expansive soil. CO5: Select suitable techniques and understand the mechanism of treatment of swelling UNIT I - GENERAL PRINCIPLES (09) Origin of expansive soils Physical properties of expansive soils composition – –Mineralogical Identification of expansive soils Fieldconditions that favour swelling Consequences of – – – swelling. UNIT II - SWELLING CHARACTERISTICS(09) Swelling characteristics Laboratory Prediction of swellingcharacteristics – – – Evaluation of heave. UNIT III - TECHNIQUES FOR CONTROLLING SWELLING(09) Horizontal moisture barriers Vertical moisture barriers Surface andsubsurface drainage – – – Prewetting Soil replacement Sand cushiontechniques CNS layer technique. – – – UNIT IV - FOUNDATIONSON EXPANSIVE SOILS(09) Belled Bearing capacity and skin friction anddisadvantages Design of – –Advantages – belled piers Underreamed piles Design andconstruction. – – UNIT V - MODIFICATION OF SWELLING CHARACTERISTICS (09) Lime stabilization Mechainsms Limitations Lime injection Limecolumns Mixing – – – – – – Chemical stabilization Construction. – TOTAL :45hrs REFERENCE 1. Fu Hua Chen, Foundations on Expansive Elsevier ScientificPublishing Company, New York. 2. GopalRanjan and A.S.RRao, Basic and Applied Soil Mechanics,NewAge International Publishers –New Delhi. 3. Hand Book on Underreamed and Bored Compaction Pile Foundation,CBRI, Roorkee. 4. IS : 2720 (Part XLI) 1977 Measurement of Swelling Pressure of Soils. – – 5. Search for Solutions in Expansive Soils. 6. Alam Singh, Modern Geotechnical Engineering, Geo-EnvironAcademia, Jodhapur. 7. Saran, Analysis and Design of Substructures. PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11
COURSE OBJECTIVE To get exposure on the properties of expansive soils and to study about the substructures placed on expansive soils. COURSE OUTCOMES At the end of the course, students will be able to CO1: To Assess the occurrence and distribution of expansive soils. CO2: To Study the properties of expansive soils and the controlling techniques. CO3: To Understand various methods of stabilization of expansive soils and foundations used in expansive soils. CO4: Design foundations on expansive soil. CO5: Select suitable techniques and understand the mechanism of treatment of swelling UNIT I - GENERAL PRINCIPLES (09) Origin of expansive soils – Physical properties of expansive soils –Mineralogical composition – Identification of expansive soils – Fieldconditions that favour swelling – Consequences of swelling. UNIT II - SWELLING CHARACTERISTICS(09) Swelling characteristics – Laboratory – Prediction of swellingcharacteristics – Evaluation of heave. UNIT III - TECHNIQUES FOR CONTROLLING SWELLING(09) Horizontal moisture barriers – Vertical moisture barriers – Surface andsubsurface drainage – Prewetting – Soil replacement – Sand cushiontechniques – CNS layer technique. UNIT IV - FOUNDATIONSON EXPANSIVE SOILS(09) Belled – Bearing capacity and skin friction –Advantages anddisadvantages – Design of belled piers – Underreamed piles – Design andconstruction. UNIT V - MODIFICATION OF SWELLING CHARACTERISTICS (09) Lime stabilization – Mechainsms – Limitations – Lime injection – Limecolumns – Mixing – Chemical stabilization – Construction. TOTAL :45hrs REFERENCE 1. Fu Hua Chen, Foundations on Expansive Elsevier ScientificPublishing Company, New York. 2. GopalRanjan and A.S.RRao, Basic and Applied Soil Mechanics,NewAge International Publishers –New Delhi. 3. Hand Book on Underreamed and Bored Compaction Pile Foundation,CBRI, Roorkee. 4. IS : 2720 (Part XLI) – 1977 – Measurement of Swelling Pressure of Soils. 5. Search for Solutions in Expansive Soils. 6. Alam Singh, Modern Geotechnical Engineering, Geo-EnvironAcademia, Jodhapur. 7. Saran, Analysis and Design of Substructures. PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11