Numerical simulations of hardening and cooling of the early-age concrete

• Autorzy: Knor G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents a new method of control, modeling and identification of thermal fields in concrete structures. The proposed methodology boils down to four interdependent tasks: 1) the determination of a time-dependent intensity of the heat of hardening and other thermophysical properties of concrete by means of the numerical inverse problem solution, which is based on experimental measurements of temperature, 2) numerical modeling of the evolution of the thermal field in the maturing concrete structure, using material properties determined in the first point, 3) experimental verification of a thermal field modeling (point 2) using 2D and 3D concrete samples, 4) the formulation of the problem of optimum design of the cooling system to mitigate thermal stress concentrations during maturing of massive concrete structures.

Słowa kluczowe

EN

concrete structures; inverse heat transfer problem; pipe cooling system

PL

konstrukcje betonowe; wymiana ciepła; metody odwrotne; rurowy system chłodzenia

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: IPPT Reports on Fundamental Technological Research
• Rocznik: 2013
• Tom: nr 4
• Strony: 11--18
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Knor G.

• Institute of Fundamental Technological Research Polish Academy of Sciences Pawinskiego 5B, 02-106 Warszawa, Poland

Bibliografia

• 1. G. KNOR, M. A. GLINICKI, J. HOLNICKI-SZULC, Determination of thermal properties of hardening concrete by means of inverse problem solution, Roads and Bridges 4(11), 281-294, 2012.
• 2. S.W. PHILLIPS, A. WILKINS, W.M. CHIRDON, Simultaneous inverse identification of transient thermal properties and heat sources using sparse sensor information, Journal of Engineering Mechanics 133(12), 1341-1351, 2007.
• 3. C. AUDET, G. SAVARD, W. ZGHAL, Multiobjective optimization through a series of single-objective formulations, SIAM Journal on Optimization 19(1), 188-210, 2008.
• 4. T. MYERS, N. FOWKES, Y. BALLIM, Modeling the cooling of concrete by piped water, Journal of Engineering Mechanics 135(12), 1375-1383, 2009.
• 5. W.E. SCHIESSER, G.W. GRIFFITHS, A compendium of partial differential equation models: method of lines analysis with MATLAB, Cambridge University Press, ISBN 978-0-521-51986-1, 2009.
• 6. G. KNOR, J. HOLNICKI-SZULC, M.A. GLINICKI, Determination of thermal properties of hardening concrete containing high calcium, fly ash, 14th International Conference Structural Faults and Repair, University of Edinburgh 1, 1-10, 2012.