Paper Titles
Thermal Shock Resistance of Si3N4/hBN Ceramic Composites
p.73
Multi-Parameter Fracture Mechanics: Crack Approaching a Bi-Material Interface
p.79
Numerical Stress Analysis of the Biaxial Tension-Compression Wedge-Splitting Test in Vicinity of the Crack Tip
p.85
Comparison of the Fatigue Crack Propagation Rates in S355 J0 and S355 J2 Steel Grades
p.91
Influence of Interfacial Transition Zone on Local and Overall Fracture Response of Cementitious Composites
p.97
Mechanical Properties of Build-Up Layers on Failed Ceramic Roller
p.103
Atomic Force Microscopy Measurements of the Area Function of a Sphero-Conical Tip
p.108
Oxide Ceramic Nano/Microfibers Prepared by Needle-Less Electrospinning - Materials for Fiber Reinforced Composites
p.114
Comparison Study of Internal Stress Measured by Diffraction Mapping and Calculation Using FEM
p.120

Influence of Interfacial Transition Zone on Local and Overall Fracture Response of Cementitious Composites

Article Preview

Abstract:

Mechanical fracture properties of interfacial transition zone (ITZ) of fine-grained composite based on cement matrix with different types – basalt, granite, marble and amphibolite – of rock inclusion were studied. Specimens with the initial stress concentrator were tested in standard three-point bending configuration. Fracture surfaces were examined with light and electron microscopes. Local ITZ response was characterized by nanoindentation in the vicinity of rock inclusions. Local elasticity, hardness and viscous properties were assessed. It has been shown that the ITZ is mechanically weaker compared to the bulk matrix in the region of ca. 0–20 μm from the inclusion for all specimen’s types. It exhibits gradual increase of elastic modulus and hardness, which can be approximately expressed by a power law. On the other hand, the creep in ITZ was found to be higher compared to the bulk matrix. The results of nanoindentation measurements are in a good agreement with overall mechanical properties, fracture response and microstructure measurements done by scanning electron microscopy.

You might also be interested in these eBooks
Local Mechanical Properties XIII View Preview

Info:

Periodical:

Key Engineering Materials (Volume 784)

Pages:

97-102

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.784.97

Citation:

Cite this paper

Online since:

October 2018

Authors:

Vojtěch Zacharda, Jiří Němeček, Hana Šimonová, Barbara Kucharczyková, Michal Vyhlídal, Zbyněk Keršner*

Keywords:

Fine-Grained Cement-Based Composite, Interfacial Transition Zone, Microstructure, Nanoindentation, Rock Inclusion

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2018 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

References

[1] J. Farran, Contribution mineralogique a l'etude de l'adherence entre les constituants hydrates des ciments et les materiaux enrobes, Revue des Materiaux de Construction. 491 (1956) 155–157, 492 (1956) 191–209.

Google Scholar

[2] RILEM 1998. A. Katz, et al. (Eds.) Second International Conference on the Interfacial Transition Zone in Cementitious Composites, E & FN Spon, New York, (1998).

Google Scholar

[3] K. L. Scrivener, A. K. Crumbie, P. Laugesen, The Interfacial Transition Zone (ITZ) between Cement Paste and Aggregate in Concrete, Interface Science. 12 (2004) 411–421.

DOI: 10.1023/b:ints.0000042339.92990.4c

Google Scholar

[4] G. Prokopski, J. Halbiniak, Interfacial transition zone in cementitious materials, Cem Concr Res. 30 (2000) 4, 579–583.

DOI: 10.1016/s0008-8846(00)00210-6

Google Scholar

[5] J. P. Ollivier, J. C. Maso, B. Bourdette, Interfacial Transition Zone in Concrete, Advn Cem Bas Mat. 2 (1995), 30–38.

DOI: 10.1016/1065-7355(95)90037-3

Google Scholar

[6] Z. Hashin, P. J. M. Monteiro, An inverse method to determine the elastic properties of the interphase between the aggregate and the cement paste, Cem Concr Res. 32 (2002) 1291−1300.

DOI: 10.1016/s0008-8846(02)00792-5

Google Scholar

[7] B. L. Karihaloo, Fracture Mechanics and Structural Concrete, Longman Scientific & Technical, New York, (1995).

Google Scholar

[8] W. Oliver, G. Pharr, An Improved Technique for Determining Hardness and Elastic-Modulus using Load and Displacement Sensing Indentation Experiments, J Mater Res. 7 (1992) 1564−1583.

DOI: 10.1557/jmr.1992.1564

Google Scholar