Experimentally informed fracture modelling of interfacial transition zone at micro-scale

Experimentally informed fracture modelling of interfacial transition zone at micro-scale

Zhang, H. (TU Delft Materials and Environment)
Gan, Y. (TU Delft Materials and Environment)
Xu, Y. (TU Delft Materials and Environment)
Zhang, Shizhe (TU Delft Materials and Environment)
Schlangen, E. (TU Delft Materials and Environment)
Šavija, B. (TU Delft Materials and Environment)

2019

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.

http://resolver.tudelft.nl/uuid:0926f09a-d6a9-4bdf-b046-d15d86e85b48

https://doi.org/10.1016/j.cemconcomp.2019.103383

2020-01-31

0958-9465

Cement and Concrete Composites, 104

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.

Institutional Repository

journal article

© 2019 H. Zhang, Y. Gan, Y. Xu, Shizhe Zhang, E. Schlangen, B. Šavija