caa a22 4500 465740324 CHVBK 20180323111807.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF00012553 doi (NATIONALLICENCE)springer-10.1007/BF00012553 Behaviour of fracture zones in notched concrete beams [Elektronische Daten] [M. Alexander, G. Blight] The paper considers fracture zones in notched concrete beams ranging in depth from 100 mm to 500 mm, focussing on their size and on zone stresses. Using a simple model, average fracture zone stresses are calculated, and it is shown that significantly larger stresses occur in larger beams than in smaller beams. This helps to explain the observed notch-insensitivity of smaller beams, and the enhanced fracture toughness of larger beams. It appears that fracture zone stresses increase during fracture, but the influence of friction in the support rollers can affect the results. Stresses developed in fracture zones are characteristic of the type of cemented material being tested. Kluwer Academic Publishers, 1990 Alexander M. Department of Civil Engineering, University of the Witwatersrand, Johannesburg, South Africa aut Blight G. Department of Civil Engineering, University of the Witwatersrand, Johannesburg, South Africa aut International Journal of Fracture Kluwer Academic Publishers 44/1(1990-07-01), 71-77 0376-9429 44:1<71 1990 44 10704 https://doi.org/10.1007/BF00012553 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00012553 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Alexander M. Department of Civil Engineering, University of the Witwatersrand, Johannesburg, South Africa aut NATIONALLICENCE 700 1- Blight G. Department of Civil Engineering, University of the Witwatersrand, Johannesburg, South Africa aut NATIONALLICENCE 773 0- International Journal of Fracture Kluwer Academic Publishers 44/1(1990-07-01), 71-77 0376-9429 44:1<71 1990 44 10704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer