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This comprehensive treatise covers in detail practical methods of
analysis as well as advanced mathematical models for structures
highly sensitive to creep and shrinkage. Effective computational
algorithms for century-long creep effects in structures, moisture
diffusion and high temperature effects are presented. The main
design codes and recommendations (including RILEM B3 and B4) are
critically compared. Statistical uncertainty of century-long
predictions is analyzed and its reduction by extrapolation is
discussed, with emphasis on updating based on short-time tests and
on long-term measurements on existing structures. Testing methods
and the statistics of large randomly collected databases are
critically appraised and improvements of predictions of
multi-decade relaxation of prestressing steel, cyclic creep in
bridges, cracking damage, etc., are demonstrated. Important
research directions, such as nanomechanical and probabilistic
modeling, are identified, and the need for separating the
long-lasting autogenous shrinkage of modern concretes from the
creep and drying shrinkage data and introducing it into practical
prediction models is emphasized. All the results are derived
mathematically and justified as much as possible by extensive test
data. The theoretical background in linear viscoelasticity with
aging is covered in detail. The didactic style makes the book
suitable as a textbook. Everything is properly explained, step by
step, with a wealth of application examples as well as simple
illustrations of the basic phenomena which could alternate as
homeworks or exams. The book is of interest to practicing
engineers, researchers, educators and graduate students.
This comprehensive treatise covers in detail practical methods of
analysis as well as advanced mathematical models for structures
highly sensitive to creep and shrinkage. Effective computational
algorithms for century-long creep effects in structures, moisture
diffusion and high temperature effects are presented. The main
design codes and recommendations (including RILEM B3 and B4) are
critically compared. Statistical uncertainty of century-long
predictions is analyzed and its reduction by extrapolation is
discussed, with emphasis on updating based on short-time tests and
on long-term measurements on existing structures. Testing methods
and the statistics of large randomly collected databases are
critically appraised and improvements of predictions of
multi-decade relaxation of prestressing steel, cyclic creep in
bridges, cracking damage, etc., are demonstrated. Important
research directions, such as nanomechanical and probabilistic
modeling, are identified, and the need for separating the
long-lasting autogenous shrinkage of modern concretes from the
creep and drying shrinkage data and introducing it into practical
prediction models is emphasized. All the results are derived
mathematically and justified as much as possible by extensive test
data. The theoretical background in linear viscoelasticity with
aging is covered in detail. The didactic style makes the book
suitable as a textbook. Everything is properly explained, step by
step, with a wealth of application examples as well as simple
illustrations of the basic phenomena which could alternate as
homeworks or exams. The book is of interest to practicing
engineers, researchers, educators and graduate students.
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