Paper Titles
Time-Variant Reliability Analysis of Ship Structure Subjected to Fatigue and Corrosion
p.153
Experimental Study on Fracture Properties of Cementitious Materials
p.157
Comparison of Computational Crack Path Predictions with Experimental Findings for a Quarter-Circular Surface Crack in a Shaft under Torsion
p.161
Wire Cable Failures in Climbing Anchor Chocks
p.165
Experiment Studies on Fracture Energy of Cement Paste and Mortar
p.169
Deformation and Damage Evolution of the Microstructure around Ti-Particles in IF Steel during Tensile Deformation
p.173
Gearbox Failure Detection Using Growing Hierarchical Self-Organizing Map
p.177
Interfacial Fracture Toughness of APS Thermal Barrier Coating under High Temperature
p.181
Fatigue Analysis of Forged Aerospace Components Based on Micro Structural Parameters
p.185

Experiment Studies on Fracture Energy of Cement Paste and Mortar

Article Preview

Abstract:

As cement-based composite, concrete can be properly represented by three phases in microstructure: cement paste, aggregate as well as interfacial transition zone between them. As the matrix compositions of concrete, fracture properties of cement paste and mortar have great influence on fracture performance of concrete, and fracture energy is an important parameter for concrete non-linear fracture mechanics research. Therefore, three-point bending beams of cement paste and mortar with different sizes and strengths were tested. A complete load-deflection (P-δ) curve was directly obtained, and a fit was made for the tail of the P-δ curve using power and exponential function, respectively. And then the fitting results of the two function were compared. It was found that with the increase of specimen size the influence of tail curve on fracture energy is decrease，and considering the influence of tail curve, fracture energy of cement paste and mortar are size-independent. The discussion on the obtained results was made.

You might also be interested in these eBooks
Advances in Fracture and Damage Mechanics VI View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 348-349)

Pages:

169-172

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.348-349.169

Citation:

Cite this paper

Online since:

September 2007

Authors:

Shi Lang Xu, Yu Zhu

Keywords:

Cement Paste, Fitting Function, Fracture Energy, Mortar, Three-Point Bending Beam

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] A. Hillerborg, M. Modeer, P.E. Petersson: Analysis of crack formation and crack growth in concrete by means of fracture mechanics and finite elements. Cement and Concrete Research Vol 6 (1976), pp.773-782.

DOI: 10.1016/0008-8846(76)90007-7

Google Scholar

[2] P.E. Petersson: Crack growth and formation of fracture zones in concrete and similar materials, Report TVBM-1006. University of Lund, (1981).

Google Scholar

[3] RILEM TC-50 FMC. Determination of the fracture energy of mortar and concrete by means of three-point-bend tests on notched beams. Materials and Structure Vol 18 (1985), pp.285-290.

DOI: 10.1201/9781482271362-58

Google Scholar

[4] D. Zhang, J.Y. Liu et al: Analysis of the determination of fracture energy of concrete using three-point bending method. Journal of Building Materials. Vol. 2 (1999), pp.206-211.

Google Scholar