Hostname: page-component-745bb68f8f-d8cs5 Total loading time: 0 Render date: 2025-01-15T06:41:56.205Z Has data issue: false hasContentIssue false
  • English
  • Français

The Interfacial Transition Zone and its Influence on the Fracture Behavior of Concrete

Published online by Cambridge University Press:  21 February 2011

Davide Zampini ,
Hamlin M. Jennings  and
Surendra P. Shah
Davide Zampini
Affiliation:
Department of Civil Engineering NSF Center for Advanced Cement Based Materials Evanston, IL 60208, U.S.A.
Hamlin M. Jennings
Affiliation:
Departments of Materials Science and Civil Engineering Northwestern University NSF Center for Advanced Cement Based Materials Evanston, IL 60208, U.S.A.
Surendra P. Shah
Affiliation:
Department of Civil Engineering NSF Center for Advanced Cement Based Materials Evanston, IL 60208, U.S.A.
Get access

Abstract

Concrete specimens of constant water-to-cement ratio and varying amounts of gravel aggregate were tested under 3-point bend. The fracture toughness of the composite and surface roughness of the paste are determined. Fracture parameters obtained from the Two ParameterFracture Model (TPFM) such as the critical stress intensity factor (KIc) and critical effective crack extension (Δao) are found to be related to the average surface roughness of the paste. The Interfacial Transition Zone (ITZ) and the bulk paste are distinguished by different values of roughness. The surface roughness of the area adjacent to the aggregate particle is evaluated as a function of the distance from the aggregate surface. In particular, the surface roughness of the paste near the aggregate is greater than that of the paste far from the aggregate, and it decreases with distance from the aggregate. The higher roughness of the paste near the aggregate indicates that aggregate particles, and more specifically the ITZ associated with them, act to toughen the paste in concrete.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 370: Symposia Va/Vb – Microstructure of Cement-Based Systems/Bonding and Interfaces in Cement... , 1994 , 357
Copyright
Copyright © Materials Research Society 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Farran, J., Rev. Mater. Constr. Tray. Publ. 490–491, 155 (1956); 492, 191 (1956).Google Scholar
2. Struble, L. and Mindess, S., The International Journal of Cement Composites and Lightweight Concrete 5(4), 79 (1983).Google Scholar
3. Buyukozturk, O. and Lee, K.M., Cement and Concrete Composites 15, 143 (1993).Google Scholar
4. Langton, C.A. and Roy, D.M., in Morphology and Microstructure of the Cement Paste/Rock Interfacial regions (7th International Congress on the Chemistry of Cement 3, Paris, Editions Septima, Paris, France, 1980,1981) pp. VII 127-VII 132.Google Scholar
5. Gibergues, C., Grandet, J., and Ollivier, J.P., in Bond in Concrete, edited by Bartos, P. (Applied Science Publishers, London, 1982) p. 24.Google Scholar
6. Barnes, B.D., Diamond, S. and Dolch, W.L., Cement and Concrete Research 8, 233 (1978).Google Scholar
7. Scrivener, K.L. and Pratt, P.L. in A Preliminary Study of the Microstructure of the Cement/Sand Bond In Mortars (81 International Congress on the Chemistry of Cement, Rio de Janeiro 3, Abla Grafica e Editora, Rio de Janeiro, Brazil, 1986) pp. 466–471.Google Scholar
8. Scrivener, K.L., Bentur, A. and Pratt, P.L., Advances in Cement Research 1(4), 230 (1988).Google Scholar
9. Ollivier, J.P. and Massat, M., in Advances in Cement and Concrete, edited by Grutzeck, M.W. and Sarkar, S.L. (American Society of Civil Engineers, New York, 1994) p. 1994.Google Scholar
10. Larbi, J.A. and Bijen, J.M.J.M., Cement and Concrete Research 20, 461 (1990).Google Scholar
11. Monteiro, P.J.M., Maso, J.C. and Ollivier, J.P., Cement and Concrete Research 15(2), 953 (1985).Google Scholar
12. Monteiro, P.J.M. and Ostertag, C.P., Cement and Concrete Research 19, 987 (1989).Google Scholar
13. Scrivener, K.L. and Gartner, E.M. in Bonding in Cementitious Composites, edited by Mindess, S. and Shah, S.P. (Mater. Res. Soc. Proc. 114, Boston, MA, 1987) pp. 77–85.Google Scholar
14. Detwiler, R.J., Monteiro, P.J.M., Wenk, H.R. and Zhong, Z., Cement and Concrete Research 18, 823 (1988).Google Scholar
15. Saito, M. and Kawamura, M., Cement and Concrete Research 16, 653 (1986).Google Scholar
16. Mitsui, K., Li, Z., Lange, D.A. and Shah, S.P., ACI Materials Journal 91, 30 (1994).Google Scholar
17. Jenq, Y. and Shah, S.P., Journal of Engineering Mechanics 111(10), 1227 (1985).Google Scholar
18. Lange, D.A., Jennings, H.M., Shah, S.P., J. Am. Ceram. Soc. 76, 589 (1993).Google Scholar
19. Lange, D.A., Jennings, H.M., and Shah, S.P., J. of Mater. Sc. 28, 3879 (1993).Google Scholar