Buch, Englisch, 256 Seiten, Format (B × H): 161 mm x 240 mm, Gewicht: 554 g
Research Project Ceos.Fr
Buch, Englisch, 256 Seiten, Format (B × H): 161 mm x 240 mm, Gewicht: 554 g
ISBN: 978-1-78630-052-2
Verlag: Wiley
This book presents new guidelines for the control of cracking in massive reinforced and prestressed concrete structures. Understanding this behavior during construction allows engineers to ensure properties such as durability, reliability, and water- and air-tightness throughout a structure’s lifetime. Based on the findings of the French national CEOS.fr project, the authors extend existing engineering standards and codes to advance the measurement and prediction of cracking patterns.
Various behaviors of concrete under load are explored within the chapters of the book. These include cracking of ties, beams and in walls, and the simulation and evaluation of cracking, shrinkage and creep. The authors propose new engineering rules for crack width and space assessment of cracking patterns, and provide recommendations for measurement devices and protocols.
Intended as a reference for design and civil engineers working on construction projects, as well as to aid further work in the research community, applied examples are provided at the end of each chapter in the form of expanded measurement methods, calculations and commentary on models.
Autoren/Hrsg.
Weitere Infos & Material
Foreword xi
Notations xv
Introduction xxi
Chapter 1. CEOS.fr Project Presentation 1
1.1. CEOS.fr work program 1
1.2. Testing 2
1.2.1. Tests on prismatic full-scale blocks 2
1.2.2. Tests on 1/3-scale beams 10
1.2.3. Tests on 1/3-scale shear walls 13
1.2.4. Tests on ties 17
1.3. Modeling and simulation 21
1.3.1. MEFISTO research program 21
1.3.2. Benchmarks and workshops 23
1.3.3. Numerical experiments 24
1.4. Engineering 25
1.5. Database and specimen storage 26
1.5.1. Database CHEOPS 26
1.5.2. Specimen storage (Renardières site) 26
Chapter 2. Hydration Effects of Concrete at an Early Age and the Scale Effect 27
2.1. Hydration effects of concrete at an early age 27
2.1.1. Global heating and cooling of a concrete element 28
2.1.2. Differential temperature between concrete core and surface 29
2.2. Scale effect 32
2.2.1. Scale effect principle 32
2.2.2. Calculating scale effect according to Weibull theory 33
2.2.3. Worked examples of calculation with the scale effect according to the Weibull model 37
2.2.4. Application of Weibull integral in bending and in tension 44
Chapter 3. Cracking of Ties 47
3.1. Design values and limit values 47
3.2. Adjusting the design value for verification purposes 47
3.3. Crack spacing equation 48
3.3.1. Linear equation 48
3.3.2. Relationship between the maximum spacing Sr,max and the mean spacing Sr,m 49
3.3.3. Equation based on the MC2010 bond-slip relationship 49
3.4. Equation for the mean differential strain 50
3.5. Model accuracy when calculating the strain and crack width 51
3.6. Example of the application of the cracking equations to a concrete tie in tension 53
Chapter 4. Cracking of Beams Under Mechanical Flexural Loading 59
4.1. Crack spacing 59
4.2. Crack width 60
4.2.1.
