Numerical model for analysis of early-age thermal-moisture effects in an RC wall

• Autorzy: Klemczak B. , Knoppik-Wróbel A.

Warianty tytułu

PL

Model numeryczny do analizy wczesnych wpływów termiczno-wilgotnościowych w ścianie żelbetowej

• Języki publikacji: EN

Abstrakty

EN

The paper presents the original numerical model for simulation of thermal, moisture and mechanical effects in concrete structures with an example of application. The influence of different curing conditions on the temperature and moisture distribution in RC wall was investigated. The stress state and the damage intensity factor were determined and the areas of possible cracking were selected as well.

PL

W artykule przedstawiono autorski model numeryczny do symulacji zjawisk termicznych, wilgotnościowych i mechanicznych w konstrukcjach betonowych wraz z przykładem jego zastosowania. Zbadano wpływ warunków betonowania i pielęgnacji na rozkład temperatur i wilgotności w ścianie żelbetowej. Wyznaczono stan naprężenia oraz wytężenia, określając również możliwe obszary zarysowania.

Słowa kluczowe

EN

early age concrete; FEM analysis; thermal-shrinkage stresses; RC wall

PL

młody beton; analiza MES; naprężenie termiczno-skurczowe; ściana żelbetowa

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Budownictwo
• Rocznik: 2013
• Tom: R. 110, z. 1-B
• Strony: 95--114
• Opis fizyczny: Bibliogr. 18 poz., wz., wykr., tab.

Twórcy

autor

Klemczak B.

• Department of Structural Engineering, Faculty of Civil Engineering, Silesian University of Technology

autor

Knoppik-Wróbel A.

• Department of Structural Engineering, Faculty of Civil Engineering, Silesian University of Technology

Bibliografia

• [1] Ayotte E., Massicotte B., Houde J., Gocevski V., Modeling the thermal stresses at early ages in a concrete monolith, ACI Materials Journal, vol. 94 issue 6, 1997.
• [2] Bažant Z. P., Carol I., Viscoelasticity with aging caused by solidification of nonaging constituent, Journal of Engineering Mechanics, no. 119, 1993.
• [3] Borucka-Lipska J., Kiernożycki W., Freidenberg P., Indirect interactions in massive concrete elements with different concrete compositions, Przegląd Budowlany, nr 3, 2006.
• [4] Di Luzio G., Cedolin L., Numerical model for time-dependent fracturing of concrete structures and its application, Proceedings of International Conference on Fracture Mechanics of Concrete and Concrete Structures, Catania, Italy 2007.
• [5] Santurjian O., Kolarow L., A spatial FEM model of thermal stress state of concrete blocks with creep consideration, Computers and Structures, vol. 58 issue 3, 1996.
• [6] Yuan Y., Wan Z.L, Prediction of cracking within early-age concrete due to thermal, drying and creep behavior, Cement and Concrete Research, no. 32, 2002.
• [7] Gawin D., Pesavento F., Schrefler B. A., Hygro–thermo–chemo–mechanical modelling of concrete at early ages and beyond. Part I: Hydration and hygro–thermal phenomena, International Journal for Numerical Methods in Engineering, no. 67, 2006.
• [8] Gawin D., Pesavento F., Schrefler B.A., Hygro–thermo–chemo–mechanical modelling of concrete at early ages and beyond. Part II: Shrinkage and creep of concrete, International Journal for Numerical Methods in Engineering, no. 67, 2006.
• [9] Wyrzykowski M., Modeling coupled thermo–hygral process in maturing concrete exposed to internal and external curing, PhD thesis, Technical University of Łódź, Łódź 2010.
• [10] Andreasik M., Thermal–shrinkage stresses in massive concrete, PhD thesis, Cracow Technical University, Kraków 1982.
• [11] Szarliński J., Stress state and limit loads of massive concrete structures, Monograph 88, Kraków 1989.
• [12] Klemczak B., Viscoelastic–plastic material model for numerical simulation of phenomena occurring in early age concrete, PhD thesis, Silesian University of Technology, Gliwice 1999.
• [13] Meschke G., Consideration of aging of shotcrete in the context of 3-D viscoplastic material model, International Journal for Numerical Methods in Engineering no. 39, 1996.
• [14] Tanabe T., Ishikawa Y., Ando N., Visco-elastic and visco-plastic modeling of transient concrete, Proceedings of EURO-C 1998 International Conference on Computational Modelling of Concrete Structures, Badgestein, Austria 1998.
• [15] Klemczak B., Modeling thermal–moisture and mechanical effects in massive concrete structures, Monograph 183, Silesian University of Technology, Gliwice 2008.
• [16] Klemczak B., Prediction of Coupled Heat and Moisture Transfer in Early-Age Massive Concrete Structures, Numerical Heat Transfer. Part A: Applications, vol. 60, no. 3, 2011.
• [17] CEB-FIP Model Code 1990, 1991.
• [18] Klemczak B. Adapting of the Willam–Warnke failure criteria for young concrete, Archives of Civil Engineering, vol. 53, no. 2, 2007.

Uwagi

EN

This paper was done as part of a research project N N506 043440 funded by Polish National Science Centre.