Paper Titles
Controlled Release of Resveratrol and Lignan by Matrix Tableting
p.330
Equivalence between Two Fracture Methods
p.337
Finite Element Examination and Validation of Stress Field around Ductile Mode I Crack Tip in Elastic Plastic Fracture
p.342
Determination of Double-G Fracture Parameters of Post-Fire Concrete
p.348
Fracture Behaviors of Post-Fire Concrete
p.352
Tunable Reflectarray Resonant Elements Based on Non-Linear Liquid Crystal Materials
p.357
Corrosion Property Analysis of Coating Formulated Using Acrylic Polyol and Silicone Resin Hybrid Systems
p.363
Structural and Optical Properties of α-Ga2O3 Films Deposited on Sapphire (10‾10) and (01‾12) Substrate by MOCVD
p.369
Analysis and Calculation of the Art of Internal High Pressure Forming
p.374

Fracture Behaviors of Post-Fire Concrete

Article Preview

Abstract:

nvestigations on the residual Mode-I fracture behaviors of concrete subjected to elevated temperatures were implemented in present research. Test specimens of the same dimensions, 230×200×200 mm, were exposed to ten temperatures varying from 20oC to 600oC. The wedge splitting method was employed to obtain the complete load-crack mouth opening displacement curves (P-CMOD) of the post-fire specimens, from which the initial fracture toughness Kini, the critical fracture toughness Kic and the fracture energy GF were calculated. The results demonstrated that Kini, Kic decreased monotonically with increasing heating temperatures Tm owing to the thermal damage induced by high temperatures; whereas GF sustained a hold-increase-decrease tendency with Tm for the energy dissipation of multi-cracks.

You might also be interested in these eBooks
Chemical, Material and Metallurgical Engineering View Preview

Info:

Periodical:

Advanced Materials Research (Volume 746)

Pages:

352-356

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.746.352

Citation:

Cite this paper

Online since:

August 2013

Authors:

Neng You, Cheng Le Lin, Zhou Dao Lu

Keywords:

Fracture Energy, Fracture Toughness, Mode-I Fracture, Post-Fire, Wedge Splitting Method

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Zdenek. P. Bazant and Pere C. Prat., Effect of Temperatures and Humidity on Fracture Energy of Concrete, ACI Materials Journals, Vol. 85(4), (1988), p.262.

Google Scholar

[2] Baker G. The effect of exposure to elevated temperatures on the fracture energy of plain concrete. RILEM Materials and Structures, Vol. 29 (190), (1996), p.383.

DOI: 10.1007/bf02486347

Google Scholar

[3] Zhang B., Bicanic N., Pearce C.J. and Balabanic G. Residual fracture properties of normal and high-strength concrete subject to elevated temperatures, Magazine of Concrete Research, Vol. 52(2), (2000), p.123.

DOI: 10.1680/macr.2000.52.2.123

Google Scholar

[4] Nielsen C.V. and Bicanic N. Residual fracture energy of high-performance and normal concrete subject to high temperatures, RILEM Materials and Structures, 2003, Vol. 36(262), (2003), p.515.

DOI: 10.1617/13880

Google Scholar

[5] B. Zhang and N. Bicanic. Fracture energy of high-performance concrete at high temperatures up to 450ºC: the effects of heating temperatures and testing conditions (hot and cold), Magazine of Concrete Research, Vol. 58(5), (2006), p.277.

DOI: 10.1680/macr.2006.58.5.277

Google Scholar

[6] G. Prokopski. Fracture toughness of concretes at high temperature, Journal of Materials Science, Vol. 30, (1995), p.1609.

DOI: 10.1007/bf00375272

Google Scholar

[7] Hisham Abdel-Fattah and Sameer A. Hamoush. Variation of the fracture toughness of concrete with temperature, Constructions and Building Materials, Vol 11(2), (1997), p.105.

DOI: 10.1016/s0950-0618(97)00005-6

Google Scholar

[8] Gai-Fei Peng, Wen-Wu Yang, Jie Zhao, Ye-Feng Liu, Song-Hua Bian, Li-Hong Zhao. Explosive spalling and residual mechanical properties of fiber-toughened high-performance concrete subjected to high temperatures, Cement and Concrete Research, Vol(36), (2006).

DOI: 10.1016/j.cemconres.2005.12.014

Google Scholar

[9] Shi Lang Xu and Hans W. Reinhardt. Determination of double-K criterion for crack propagation in quasi-brittle fracture, Part III: Compact tension specimens and wedge splitting specimens International Journal of Fracture, Vol 98, (1999), p.179.

Google Scholar