000012808 001__ 12808
000012808 005__ 20160920162648.0
000012808 04107 $$aeng
000012808 046__ $$k2016-09-05
000012808 100__ $$aLv, P.
000012808 24500 $$aFracture properties of fly ash concrete

000012808 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012808 260__ $$bTaylor and Francis Group, London, UK
000012808 506__ $$arestricted
000012808 520__ $$2eng$$aFly ash has widely been considered as a potential alternative to cement due to its various advantages, e.g., environmentally-friendly, durable, low heat generation during hydration and high longterm strength. However, it is not very clear how fly ash could change the fracture property of concrete, mainly, fracture toughness/energy. This paper attempts to determine the fracture energy of concrete with different fly ash concentrations by closed-loop three-point bending test. Full load-deflection curves are obtained and fracture energy is calculated for each of the mix designs. A quantitative relationship is then established to describe the change of fracture energy of concrete as the fly ash is increased. A finite element model is also developed to simulate the mechanical performance of the three-point bending test of the fly ash concrete. Results from the experiment and the numerical model are compared and a good agreement is achieved. It has been found that as the content of fly ash increases, the fracture energy decreases and the decrease in fracture energy is slow for fly ash inclusion up to 40% but fast after 40%.

000012808 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012808 653__ $$a

000012808 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012808 720__ $$aLv, P.$$iXi, X.$$iJiang, Q.$$iShibani, H.$$iYang, S.
000012808 8560_ $$ffischerc@itam.cas.cz
000012808 8564_ $$s2072786$$uhttps://invenio.itam.cas.cz/record/12808/files/256.pdf$$yOriginal version of the author's contribution as presented on CD, 256.pdf.
000012808 962__ $$r12552
000012808 980__ $$aPAPER