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Styk między betonami układanymi w różnym czasie – parametry i nośność według fib Model Code 2010

Halicka A., Jabłoński Ł.

Inżynieria i Budownictwo

2015

R. 71, nr 7

346--350

Zestawiono dane dotyczące obliczania nośności granicznej styku między betonami według zaleceń fib Model Code 2010. Zamieszczono przykład obliczeniowy i porównano uzyskane wyniki z obliczeniami według EC 2-1-1.

In the paper the data concerning the calculations of limit capacity of interface between two concrete members given in fib Model Code 2010 are compiled. The exemplary calculations are presented. The results are compared with calculations executed in accordance with EC 2-1-1.

Assessment of the casting position factor in reinforced concrete elements in view of experimental studies

Dybeł P., Furtak K.

Archives of Civil Engineering

2014

Vol. 60, nr 2

209--221

The paper presents the results of experimental investigations performed by the authors on the casting position factor. It was proved that at the height of reinforced concrete elements there are different bond conditions. Moreover, the bond depends on concrete mechanical properties, element height as well as concrete mix composition and consistency. The experiments also showed the advisability of determining the casting position factor separately for bars from normal concrete and those from high–performance concrete (HPC). The analysis of investigation results has shown that “good” bond conditions are a relative concept and depend on, among other things, element height. The higher the element the better the concrete to lower bars bond. Consequently, elements of considerable height (higher than 600 mm) demonstrate a bigger difference between concrete to upper bars bond and concrete to lower bars bond.