Recommendations of RILEM TC 287-CCS: thermo-chemo-mechanical modelling of massive concrete structures towards cracking risk assessment

These recommendations have been prepared by the corresponding working group within RILEM TC 287-CCS “Early-age and long-term crack width analysis in RC structures”, following work by the previously ceased RILEM TC 254-CMS “Thermal cracking of massive concrete structures”. This recommendations document is developed in complementarity to the state-of-the-art report of RILEM TC 254-CMS and aims to provide expert advice and suggestions to engineers and scientists interested in modelling the thermo-chemo-mechanical behaviour of massive concrete structures since concrete casting. Recommendations regarding geometrical characteristics and complexities, concrete properties and appropriate material models, boundary conditions and loads, and numerical model peculiarities with relevance to the simulation of the thermo-chemo-mechanical behaviour of massive concrete structures are given herein. The recommendations have been reviewed and approved by all members of the TC 287-CCS.

[1]  J MEAD,et al.  Mechanical properties of lungs. , 1961, Physiological reviews.

[2]  R. K. Singh,et al.  Numerical analysis for ground temperature variation , 2017, Geothermal Energy.

[3]  Sydney A. Baggs,et al.  Remote prediction of ground temperature in Australian soils and mapping its distribution , 1983 .

[4]  Rui Faria,et al.  Modelling of concrete at early ages: Application to an externally restrained slab , 2006 .

[5]  D. R. Nielsen,et al.  Review of heat and water movement in field soils , 1998 .

[6]  Omar T Farouki,et al.  Thermal properties of soils , 1981 .

[7]  Fernando A. Branco,et al.  Heat of Hydration Effects in Concrete Structures , 1992 .

[8]  B. Klemczak,et al.  Analysis of Early-Age Thermal and Shrinkage Stresses in Reinforced Concrete Walls (with Appendix) , 2014 .

[9]  E. Fairbairn,et al.  Hydration and Heat Development , 2019 .

[10]  Farid Benboudjema,et al.  Effects of early-age thermal behaviour on damage risks in massive concrete structures , 2012 .

[11]  Milan Jirásek,et al.  Creep and Hygrothermal Effects in Concrete Structures , 2018 .

[12]  Roman Wendner,et al.  Improved algorithm for efficient and realistic creep analysis of large creep-sensitive concrete structures , 2012 .

[13]  J. Torrenti,et al.  Cracking Risk and Regulations , 2019 .

[14]  K. Folliard,et al.  Temperature Boundary Condition Models for Concrete Bridge Members , 2007 .

[15]  Miguel Azenha Numerical simulation of the structural behaviour of concrete since its early ages , 2012 .

[16]  M. Azenha,et al.  Enhanced massivity index based on evidence from case studies: Towards a robust pre-design assessment of early-age thermal cracking risk and practical recommendations , 2020 .

[17]  Farid Benboudjema,et al.  Evaluation of the contribution of boundary and initial conditions in the chemo-thermal analysis of a massive concrete structure , 2014 .

[18]  A. Abdel-azim Fundamentals of Heat and Mass Transfer , 2011 .

[19]  Neven Ukrainczyk,et al.  Thermal Cracking of Massive Concrete Structures , 2019, RILEM State-of-the-Art Reports.

[20]  P. Rossi,et al.  Thermal Cracking of Massive Concrete Structures, State of the Art Report of the RILEM Technical Committee 254-CMS: Chapter 4: Mechanical properties , 2019 .

[21]  M. Azenha,et al.  Hygro-mechanical modeling of restrained ring test: COST TU1404 benchmark , 2019 .

[22]  José Luís Duarte Granja,et al.  COST TU1404 benchmark on macroscopic modelling of concrete and concrete structures at early age: Proof-of-concept stage , 2018, Construction and Building Materials.

[23]  M. Azenha,et al.  A new method based on equivalent surfaces for simulation of the post-cooling in concrete arch dams during construction , 2020 .

[24]  J. Jonasson,et al.  Modelling of temperature, moisture and stresses in young concrete , 1994 .