Creep and Shrinkage: Their Effect on the Behavior of Concrete Structures

Front Matter....Pages i-xiv
Introduction....Pages 1-2
Differentiation Among Types of Stresses and of Action Effects According to Their Causes....Pages 3-4
The Effects of Shrinkage....Pages 5-5
The Effects of Creep....Pages 6-11
Summary of the Effects of Creep and Shrinkage....Pages 11-13
General Rheological Description of the Deformation Process in Concrete....Pages 15-20
Development of the Strength of Concrete....Pages 21-24
Data on the Magnitude of Strain....Pages 24-47
Prediction Methods....Pages 47-56
Deformation Characteristics of Reinforcing and Prestressing Steels....Pages 56-58
Comparison with Construction Site Observations....Pages 58-60
Prospects for Future Developments....Pages 60-61
Back Matter....Pages 61-64
Front Matter....Pages 65-68
Brief Compilation of Formulations for an Estimate of Instantaneous and Time-Dependent Strains....Pages 68-81
Summary of Relationships for Calculating the Consequences of Creep and Shrinkage....Pages 81-89
Statically Indeterminate Coupling between a Flexible Steel Tension Member and a Concrete Structure....Pages 89-91
Internally Statically Indeterminate Coupling between Bonded Reinforcement and Concrete....Pages 91-98
Two-fold Internally Indeterminate Coupling between a Rigid Reinforcement Bonded to Concrete: Solution by the Busemann Method....Pages 98-101
Two-fold Statically Indeterminate Interaction between Two Unstressed or Prestressed Bonded Tendons and Concrete....Pages 102-108
Redistribution Moments in Prestressed Structures which Are Supported Statically Indeterminate. Examples of Internally and Externally Statically Indeterminate Systems....Pages 108-122
Systems with Multiple Degrees of Indeterminacy....Pages 122-130
Back Matter....Pages 222-223
Front Matter....Pages 65-68
Reduction of Constraints which Are Imposed through Rigid or Near-Rigid Supports....Pages 130-145
Constraints Induced by Shrinkage....Pages 145-171
Coupling of Structural Components with Different Creep and Shrinkage Properties....Pages 171-183
Use of Step-by-Step Integration for Cases which Cannot, or Only with Difficulty, Be Solved in a Closed Mathematical Form....Pages 183-188
Possible Ways of Reducing the Redistribution of Action Effects Caused by Creep....Pages 188-189
Calculation of Deformations and Camber....Pages 190-222
Back Matter....Pages 222-223
Modulus of Elasticity....Pages 225-227
The Prediction Method of Rüsch-Jungwirth....Pages 227-231
Comparison of Prediction Methods for Creep....Pages 231-235
Introduction....Pages 236-241
The Differential Equation According to Dischinger....Pages 241-256
Finite Difference Methods....Pages 257-263
The Trost Method....Pages 264-266
The Bažant Method Based onthe Effective Modulus....Pages 266-268
The Busemann Method for Internally and Multiple Statically Indeterminate Systems....Pages 269-270
Special Cases....Pages 270-274
Comparison of Results Achieved with Different Methods....Pages 274-278
Outlook....Pages 278-278
Back Matter....Pages 279-280
Back Matter....Pages 281-284