Conference
Modeling of heat and mass transfer induced by high temperature in concrete
| العنوان: | Modeling of heat and mass transfer induced by high temperature in concrete |
|---|---|
| المؤلفون: | Rodríguez, Mariana, López Garello, Carlos María, Carol, Ignacio |
| بيانات النشر: | CIMNE |
| سنة النشر: | 2015 |
| المجموعة: | Universitat Politècnica de Catalunya (UPC): Tesis Doctorals en Xarxa (TDX) / Theses and Dissertations Online |
| مصطلحات موضوعية: | Àrees temàtiques de la UPC::Matemàtiques i estadística::Anàlisi numèrica::Mètodes en elements finits, Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó, Finite element method, Plasticity -- Mathematical models, Plasticity, Concrete--Effect of temperature on, Heat and mass transfer in concrete, High temperature, Elements finits, Mètode dels, Plasticitat -- Models matemàtics, Plasticitat, Formigó -- Efecte de la temperatura |
| الوصف: | In the context of a long term development of a general meso-mechanical model for concrete under mechanical and environmental actions, this paper describes the on-going work to represent theheat and moisture transfer in concrete subject at high temperatures, which causes water movement and pore pressure build up. Temperature distributions are obtained from separate thermal diffusion analysis (uncoupled), and only one pressure variable is considered to describe the water transfer process where the water dehydration is included. The formulation is largely based on Bazant & Thonguthai’s model [1], which made no distinction between liquid and vapor water. However, in its original form that model predicted pressures far too great at high temperatures when all water was in vapor form, which motivates some modifications along the line proposed by Tenchev et. al.[2], which make the model comply also with the perfect gas law in the limit case at the critical temperature of 374,15ºC. A simple academic example for temperatures between 27 and 600ºC is presented to show the behaviour of the model. |
| نوع الوثيقة: | conference object |
| وصف الملف: | 8 p. |
| اللغة: | English |
| ردمك: | 978-84-944244-6-5 84-944244-6-7 |
| Relation: | Rodríguez, Mariana; López, Carlos María; Carol, Ignacio. Modeling of heat and mass transfer induced by high temperature in concrete. A: COMPLAS XIII. "COMPLAS XIII : proceedings of the XIII International Conference on Computational Plasticity : fundamentals and applications". Barcelona: CIMNE, 2015, p. 346-353.; http://hdl.handle.net/2117/79202 |
| الاتاحة: | http://hdl.handle.net/2117/79202 |
| Rights: | Open Access |
| رقم الانضمام: | edsbas.BE8A568D |
| قاعدة البيانات: | BASE |
| ردمك: | 9788494424465 8494424467 |
|---|