عنوان

Fundamental Research on Creep and Shrinkage of Concrete.

9401037167

9789401037167

b594566

Fundamental Research on Creep and Shrinkage of Concrete.

[Book]

Wittmann, F.H.

Springer Verlag

2013

I. Mechanisms of Creep and Shrinkage.- A model of hardened cement paste for linking shrinkage and creep phenomena.- The use of activation spectrum theory to describe creep in concrete.- Deformation kinetics of concrete.- Shrinkage and swelling of two hydrated alite pastes.- Creep and micro structural changes in concrete.- Isothermal drying shrinkage and wetting swelling of hardened cement paste.- II. Stochastic Nature of Creep and Shrinkage.- Etude experimentale de la variabilite du retrait du beton/ Experimental study of the variability of shrinkage in concrete.- Variability of creep and shrinkage of concrete.- Creep of concrete - A stochastic quantity.- III. Experimental Techniques and Results.- A contribution to the problem of reversible and irreversible creep of compact structural concretes.- Checking the principle of superposition by testing.- Drying of concrete: Consequences for the evaluation of creep test.- Relaxation tests on very old concrete.- Rheological properties at high temperature of a concrete with a crushed limestone aggregate and blast furnace cement.- Creep effects under transient temperature conditions.- Shrinkage of concrete in extreme climate.- Drying shrinkage of symmetrically reinforced concrete and some estimates of the creep of concrete in tension.- Deformations de sections transversales et de poutres flechies sous charge soutenue.- Early shrinkage of hardening cement pastes.- IV. Constitutive Relations for Creep and Shrinkage.- Non linear constitutive equations for concrete.- Analyses of shrinkage in concrete.- Comparison of prediction methods for creep coefficients of structural concrete with experimental data.- On the prediction of creep functions for concrete.- V. Observations on Structures.- Creep and shrinkage behaviour of tall buildings and long span bridges.- Analysis of restrained concrete structures for creep and shrinkage.- Experimental Analysis of prestressed concrete bridges.- VI. Structural Creep Analysis.- Prediction of shrinkage stresses and deformations in concrete.- Computerized structural analysis applied to large span bridges.- Numerical analysis of creep and shrinkage on concrete structures.- The influence of thermal creep on the operational behaviour of complex structures.- Viscoelastic stability analysis of shells.- Stresses and displacements of composite and prestressed structures.- Simplified calculation of the relaxation of stress respecting the delayed elasticity.- Shrinkage and load induced curvature of reinforced concrete beams.- Prise en compte du fluage par la methode des forces.- Comportement d'une structure continue realisee a l'aide d'elements prefabriques.- Deformation des dalles en beton: Methode bilineaire pour le calcul des fleches.- Analysis of linear visco-elastic structures subjected to delayed restraints.- General and approximate method for the analysis of linear visco-elastic structures sensitive to second order effects.- Panel Discussion I.- Microstructural Aspects, Mechanisms and Constitutive Modeling.- Panel Discussion II.- Constitutive Modeling and Structural Creep Analysis.

Wittmann, F.H.

Wittmann, F.H.

[Book]

Y