Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-09T03:59:10.118Z Has data issue: false hasContentIssue false
  • English
  • Français

Experimental Analysis of Fracture in High Strength Cementitious Composites

Published online by Cambridge University Press:  22 February 2011

Farhad Ansari
Farhad Ansari*
Affiliation:
Assistant Professor, Department of Civil & Environmental EngineeringNew Jersey Institute of Technology, Newark, New Jersey 07102
Get access

Abstract

Characterization of cementitious composites by their fracture properties has been difficult due to controversial results reported in the technical literature. Existing studies on the fracture behavior of plain concrete reveal some fracture characteristics that differ from those normally observed in metallic materials. Among these characteristics is the existence of a micro-cracking zone or process zone at the tip of an advancing crack. The determination of the fracture process zone in concrete is a difficult experimental problem, because the resulting deformation is strongly localized.

In the present study, in-plane displacements in front of notched high strength concrete have been monitored. Laser speckle metrology, which is a special technique utilizing the speckle patterns of laser light for measurement of in-plane displacements, is employed. Experimental results indicate that a precise description of the fracture process zone is possible by speckle metrology.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 42: Symposium L – Very High Strength Cement-Based Materials , 1984 , 101
Copyright
Copyright © Materials Research Society 1985

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

001 Shah, S.P. and Slate, F.O., Int. Conf. on the Structure of Concrete, London, Cement and Concrete Association (1965).Google Scholar
002 Hsu, T.T.C., Slate, F.O., Sturman, G.M., and Winter, G., AGI 60, 209 (1953)Google Scholar
003 Shah, S.P., Gokoz, U., and Ansari, F., Cement, Concrete, and Aggregates, ASTM 3, 21 (1981).Google Scholar
004 Mindes, S., Lawrence, F.V., and Kesler, C.E., Cement and Concrete Research 7, 731 (1977).10.1016/0008-8846(77)90057-6Google Scholar
005 Velazco, G., Visalvanich, K., Shah, S.P., and Naaman, A.E., Cement and Concrete Research 10, 41 (1980).10.1016/0008-8846(80)90050-2Google Scholar
006 Cook, O.J. and Crookham, G.D., Mag. of Concrete Research 6, 535 (1976).Google Scholar
007 Visalvanich, K. and Naaman, A.E., ASTM, STP 745, 151 (1982).Google Scholar
008 Butters, J.N. and Leendertz, J.A., I. Phys. E: Sci. Instru. 4, 277 (1971).10.1088/0022-3735/4/4/004Google Scholar
009 Cloud, G., Appl. Opt. 14, 878 (1975).10.1364/AO.14.000878Google Scholar
010 Parks, V.G., Exp. Mech. 20, 181 (1980).10.1007/BF02327597Google Scholar
011 Stetson, K.A., Opt. Eng. 14, 482 (1975).10.1117/12.7971814Google Scholar
012 Khetan, R.P., Chiang, F.P., Appl. Opt. 15, 2205 (1976).10.1364/AO.15.002205Google Scholar
013 Brdicko, J., Olson, M.D., and Hazell, C.R., Exp. Mech. 19, 160 (1979).10.1007/BF02324258Google Scholar
014 Duffy, D.E., Exp. Mech. 14, 378 (1974).10.1007/BF02323565Google Scholar
015 Debacker, L.C., Non-Destructive Testing, 177 (1975).10.1016/0029-1021(75)90073-0Google Scholar