Module 1
Introduction: Basic concept of prestressing – Advantages of prestressed concrete over reinforced concrete – materials for prestressed concrete and their characteristics. Uniform prestress distribution in prestressed concrete – nonuniform prestress distribution – moments of resistance.
Introduction: Basic concept of prestressing – Advantages of prestressed concrete over reinforced concrete – materials for prestressed concrete and their characteristics. Uniform prestress distribution in prestressed concrete – nonuniform prestress distribution – moments of resistance.
Module 2
Systems and methods of prestressing- pre-tensioning systems – post tensioning systems – Thermo elastic prestressing – chemical prestressing.Behavior of prestressed concrete beams in flexure : load – deflection curves for prestressed concrete beams – Interpreting bending tests – Microcracks and visible cracks – Failure.
Systems and methods of prestressing- pre-tensioning systems – post tensioning systems – Thermo elastic prestressing – chemical prestressing.Behavior of prestressed concrete beams in flexure : load – deflection curves for prestressed concrete beams – Interpreting bending tests – Microcracks and visible cracks – Failure.
Module 3
Losses in prestress: purpose of assessing losses – counteracting elastic loss-loss of prestress in case of nonuniform prestress – creep, shrinkage, relaxation and achorage losses – friction loss in prestress -graphical solution of friction losses – overcoming friction losses.
Losses in prestress: purpose of assessing losses – counteracting elastic loss-loss of prestress in case of nonuniform prestress – creep, shrinkage, relaxation and achorage losses – friction loss in prestress -graphical solution of friction losses – overcoming friction losses.
Module 4
Elastic design of sections for flexure: design of a simply supported beam with symmetrical sections of post tensioned and pretensioned type- tension members.
Elastic design of sections for flexure: design of a simply supported beam with symmetrical sections of post tensioned and pretensioned type- tension members.
Module 5
Bearing and anchorage zone- statically indeterminate structure-continuous beams- primary moment –secondary moment- resultant moment – Concordant cable profile-Gyons theorem.
Bearing and anchorage zone- statically indeterminate structure-continuous beams- primary moment –secondary moment- resultant moment – Concordant cable profile-Gyons theorem.
References
1. N. Krishna Raju, Prestressed Concrete, Tata Mc Graw Hill Publishing Co. Ltd, New Dehi.
2. S K Mallick, A P Gupta, Prestressed concrete, Oxford and IBI Series.
3. R. H. Evans, Bennet E W, Prestressed concrete theory and design, Chapman and Hall, London.
4. T. Y. Lin, Design of Prestressed Concrete Structures, Asia Publishing House.
2. S K Mallick, A P Gupta, Prestressed concrete, Oxford and IBI Series.
3. R. H. Evans, Bennet E W, Prestressed concrete theory and design, Chapman and Hall, London.
4. T. Y. Lin, Design of Prestressed Concrete Structures, Asia Publishing House.
mg university b.tech s7 civil syllabus