Experimental Investigations of Fracture Process Using DIC in Plain and Reinforced Concrete Beams under Bending - Publikacja - MOST Wiedzy

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Experimental Investigations of Fracture Process Using DIC in Plain and Reinforced Concrete Beams under Bending

Abstrakt

The fracture behaviour of concrete and reinforced concrete beams under quasi-static three-point bending was comprehensively investigated with experiments at laboratory scale. The eight various concrete mixes were tested. The influence of the shape, volume and size of aggregate particles and reinforcement on concrete fracture under bending was studied. Displacements on the surface of concrete beams were measured by means of the digital image correlation (DIC) technique. Attention was paid to the formation of a localized zone and its characteristics. In order to avoid the effect of the search patch size and the cut-off value at displacement and strain profiles, a consistent method was proposed to determine uniformly and accurately the width of a localized zone. Measured surface displacements from DIC were fitted by the error function ERF, whereas surface strains calculated from displacements were fitted by the usual normal distribution (Gauss) function. The width of a localized zone preceding a macro-crack grew strongly with increasing maximum aggregate size and slightly with diminishing aggregate volume. It did not depend on the aggregate roughness and reinforcement presence.

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Kategoria:
Publikacja w czasopiśmie
Typ:
artykuł w czasopiśmie wyróżnionym w JCR
Opublikowano w:
STRAIN nr 49, wydanie 6, strony 521 - 543,
ISSN: 0039-2103
Język:
angielski
Rok wydania:
2013
Opis bibliograficzny:
Skarżyński Ł., Tejchman-Konarzewski A.: Experimental Investigations of Fracture Process Using DIC in Plain and Reinforced Concrete Beams under Bending// STRAIN. -Vol. 49, iss. 6 (2013), s.521-543
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1111/str.12064
Weryfikacja:
Politechnika Gdańska

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