000003663 001__ 3663
000003663 005__ 20141118153351.0
000003663 04107 $$acze
000003663 046__ $$k2013-05-13
000003663 100__ $$aHavlíková, I.
000003663 24500 $$aEFFECT OF SOFTENING FUNCTION TYPE IN THE DOUBLE-K FRACTURE MODEL FOR THE EVALUATION OF FRACTURE TESTS ON CONCRETE SPECIMENS WITH AND WITHOUT POLYPROPYLENE FIBRES

000003663 24630 $$n19.$$pEngineering Mechanics 2013
000003663 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Praha
000003663 506__ $$arestricted
000003663 520__ $$2eng$$aCement-based composites are traditionally a commonly used material in civil engineering structures. The basic representative of this type of material is concrete, a quasi-brittle composite in which crack resistance can be achieved by the addition of fibres. The double-K fracture model can be used to calculate the fracture-mechanical parameter values of structural concrete with and without polypropylene fibres. This model combines the concept of cohesive forces acting on the crack length with a criterion based on the stress intensity factor, using a ‘softening function’ to determine the cohesive part of fracture toughness. In this paper, authors determine the effect of the type of this softening function on the evaluation of fracture tests performed on sets of concrete specimens with and without polypropylene fibres.

000003663 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003663 653__ $$adouble-K fracture model, softening function, concrete, polypropylene fibre, fracture test

000003663 7112_ $$aEngineering Mechanics 2013$$cSvratka (CZ)$$d2013-05-13 / 2013-05-16$$gEM2013
000003663 720__ $$aHavlíková, I.$$iKeršner, Z.$$iMajtánová, R. V.$$iNavrátilová, E.$$iPail, T.$$iŠimonová, H.
000003663 8560_ $$ffischerc@itam.cas.cz
000003663 8564_ $$s186734$$uhttps://invenio.itam.cas.cz/record/3663/files/055_Havlikova_I-FT.pdf$$y
             Original version of the author's contribution as presented on CD, FRA.
            
000003663 962__ $$r3632
000003663 980__ $$aPAPER