Faculty of Civil Engineering

Ladies and Gentelmen, as part of a series of lectures organized in cooperation with Auburn University, Alabama, USA, a lecture by prof. Barbara Klemczak, PhD, Eng. Agnieszka Jędrzejewska and PhD, Eng. Aneta Żmij from the Silesian University of Technology in Gliwice (Department of Structural Engineering, Faculty of Civil Engineering) will be held on April 15 at 3 p.m. online by the ZOOM.us platform. Detailed information on the scope of the topics covered and about the speakers are published below. Planned time of presentation is 60 minutes. + approx. 30 min. discussion.

Data for logging in to the ZOOM.us Platform will be sent to the departments of the Faculty of Civil Engineering by e-mail. In addition, everebody who is concerned can obtain login details independently by writing to the following address: tomasz.krykowski@polsl.pl

MASS CONCRETE STRUCTURES - EARLY AGE BEHAVIOR, FINITE ELEMENT MODELING AND ANALYTICAL APPROACHES

by
Prof. Barbara Klemczak, PhD, DSc, Eng.,
Agnieszka Jędrzejewska, PhD, Eng.
Aneta Żmij, PhD, Eng.
Faculty of Civil Engineering / Department of Structural Engineering
Silesian University of Technology (SUT), Gliwice, Poland

Bio-notes:

	Barbara Klemczak is a Professor in the Department of Structural Engineering at the Silesian University of Technology, Gliwice, Poland. She received her PhD and DSc in numerical modeling of early-age massive concrete structures. Her research interests include modeling and experimental investigation of thermal and shrinkage effects in concrete structures at early ages.
	Agnieszka Jędrzejewska is an Assistant Professor in the Department of Structural Engineering at the Silesian University of Technology, Gliwice, Poland. She received her PhD in numerical modeling of reinforced concrete wall-on-slab structures at early-age. Her research interests focus on restraint-induced cracking in reinforced concrete structures. She is an affiliate member of RILEM - a current member of the TC 287-CCS (Early age and long-term cracking of RC structures).
	Aneta Żmij is a Research Assistant in the Department of Structural Engineering at the Silesian University of Technology, Gliwice, Poland. Her research interests comprise the numerical and experimental study of concrete at early ages regarding hygro-thermo-mechanical behavior. She holds a PhD in the field of numerical analysis of massive foundation slabs behavior at early age.

Summary:

The necessity to consider early-age thermal-shrinkage effects in the design of mass concrete structures is posed by the cracking often observed in the first days after casting. That is why a realistic estimation of early-age thermal-shrinkage loads and induced stresses is essential in engineering science and in practice.
The early-age behavior of mass concrete structures and the specific character of thermal-shrinkage stresses will be presented with the reference to the wall-on-slab structures and foundation slabs. Analytic and numerical models to predict thermal-shrinkage stress development and cracking risk in early-age concrete in such structures will be discussed. The focus will be paid to essential aspects in FE analysis of thermo-mechanical behavior of mass structures as well the reliability of the analytic approaches. The original numerical and analytic model for analysis of early-age concrete developed in SUT will be presented.
Current work on early-age concrete carried out at SUT will be summarized.