Influence of silica fume content on the quality of bond conditions in high-performance concrete specimens

• Autorzy: Dybeł P. , Furtak K.

Identyfikatory

DOI

10.1016/j.acme.2017.02.007

• Języki publikacji: EN

Abstrakty

EN

The paper presents the analysis of the impact of silica fume content in high-performance concrete (HPC) on bond conditions along the height of tested elements. The tests were performed on the specimens made of six different HPC mixes with varying content of silica fume (0, 5 and 10% by mass of cement) and superplasticizer. The used specimens allowed for determining the changes of bond at individual levels of elements with a total height of 480 and 960 mm. The rebars in the elements were placed perpendicularly to the direction of concreting. The reference element, characterised by the parallel orientation to the direction of concreting, was also prepared. The tests indicated that the quality of bond conditions in HPC deteriorates as the distance from the formwork bottom increases. The experiment results indicate that concrete modification with silica fume can both increase and decrease the quality of bond conditions. The influence of silica fume depends on the thickness of the concrete cover, which determines the mechanism of bond failure.

Słowa kluczowe

EN

high-performance concrete; silica fume; pull-out test; top-bar effect; bond conditions

PL

beton; pył krzemionkowy; cement

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2017
• Tom: Vol. 17, no. 4
• Strony: 795--805
• Opis fizyczny: Bibliogr. 28 poz., rys., tab., wykr.

Twórcy

autor

Dybeł P.

• aAGH University of Science and Technology, Department of Geomechanics, Civil Engineering and Geotechnics, Al. Mickiewicza 30, 30-059 Kraków, Poland

autor

Furtak K.

• Cracow University of Technology, Department of Building Bridges and Tunnels, ul. Warszawska 24, 31-155 Kraków, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)