TY - JOUR
T1 - Experimentally informed fracture modelling of interfacial transition zone at micro-scale
AU - Zhang, Hongzhi
AU - Gan, Yidong
AU - Xu, Yading
AU - Zhang, Shizhe
AU - Schlangen, Erik
AU - Šavija, Branko
N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
PY - 2019
Y1 - 2019
N2 - The aim of this work is to predict the micromechanical properties of interfacial transition zone (ITZ) by combining experimental and numerical approaches. In the experimental part, hardened cement paste (HCP) cantilevers (200 μm × 100 μm × 100 μm) attached to a quartzite aggregate were fabricated and tested using micro-dicing saw and nanoindenter, respectively. In the modelling, comparable digital specimens were produced by the X-ray computed tomography (XCT) and tested by a discrete lattice model. The fracture model was calibrated by the experimental load-displacement curves and can reproduce the experimental observations well. In the end, the calibrated model was used to predict the mechanical behaviour of ITZ under uniaxial tension, which can be further used as input for the multi-scale analysis of concrete.
AB - The aim of this work is to predict the micromechanical properties of interfacial transition zone (ITZ) by combining experimental and numerical approaches. In the experimental part, hardened cement paste (HCP) cantilevers (200 μm × 100 μm × 100 μm) attached to a quartzite aggregate were fabricated and tested using micro-dicing saw and nanoindenter, respectively. In the modelling, comparable digital specimens were produced by the X-ray computed tomography (XCT) and tested by a discrete lattice model. The fracture model was calibrated by the experimental load-displacement curves and can reproduce the experimental observations well. In the end, the calibrated model was used to predict the mechanical behaviour of ITZ under uniaxial tension, which can be further used as input for the multi-scale analysis of concrete.
UR - http://www.scopus.com/inward/record.url?scp=85070099294&partnerID=8YFLogxK
U2 - 10.1016/j.cemconcomp.2019.103383
DO - 10.1016/j.cemconcomp.2019.103383
M3 - Article
AN - SCOPUS:85070099294
SN - 0958-9465
VL - 104
JO - Cement and Concrete Composites
JF - Cement and Concrete Composites
M1 - 103383
ER -