Abstract
Notched concrete beams containing varying amounts of pea gravel aggregate were tested under three-point bend, and their fracture toughness determined. The roughness of the region near the interface between the cement paste and the aggregate was evaluated by digitizing images from a confocal tandem scanning microscope. The average roughness of the paste was found to be related to the fracture parametersK IC (critical stress intensity factor) and Δa c (critical crack extension), as determined by the two-parameter fracture model. The roughness in the proximity of the paste-aggregate interface was generally higher than that of the paste far from the aggregate, and it decreased with the distance from the aggregate. This study indicates that aggregate particles increase the toughness of the cement paste portion of concrete, and that this is an important mechanism for toughening concrete.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
S. P. Shah, in “Fracture Mechanics of Concrete: Dependence of Concrete Fracture Toughness on Specimen Geometry and on Composition”, edited by A. Carpentieri and A. R. Ingraffea (Martinus and Nijhoff, The Hague 1984) p. 111.
S. Mindess, in “Fracture Mechanics of Concrete: Fracture Toughness Testing of Cement and Concrete”, edited by A. Carpentieri and A. R. Ingraffea (Martinus and Nijhoff, The Hague 1984) p. 67.
M. Kachanov, in “Fracture Toughness and Fracture Energy of Concrete Interaction of a crack with some Microcrack Systems”, edited by F. H. Wittman (Elsevier Science, Amsterdam, 1986) p. 3.
K. T. Faber andA. G. Evans,Acta Metall. 31 (1983) 565.
J. G. M. van Mier,Cem. Concr. Res. 21 (1991) 1.
S. P. Shah andC. Ouyang,Trans. ASME 15 (1993) 300.
J. Faran,Rev. Mater. Constr. 490–491 (1956) 155.492 (1956) 191.
Idem., ibid. 490–491 (1956) 155.492 (1956) 191.
B. D. Barnes, Sidney Diamond andW. L. Dolch,J. Am. Ceram. Soc. 76 (1979) 24.
L. Struble, J. Skalny andS. Mindess,Cem. Concr. Res. 10 (1980) 277.
P. J. M. Monteiro andP. K. Metha,ibid. 15 (1985) 378.
P. J. M. Monteiro, J. C. Maso andJ. P. Ollivier,ibid. 15 (1985) 953.
P. J. M. Monteiro andClaudia O. Ostertag,ibid. 19 (1989) 987.
A. Bentur, in Proceedings of the Conference on Advances in Cementitious Materials, Gaitherburg (MD), July 1990, edited by S. Mindess (The American Society, Westerville, OH, 1990) p. 523.
K. Mitsui, Z. Li, D. A. Lange andS. P. Shah,ACI Mater. J. 91 (1994) 30.
S. P. Shah andF. O. Slate, in “Proceedings of the International Conference on the Structure of Concrete”, edited by (A. E. Brooks and K. Newman Cement and Concrete Association, London, 1965) p. 82.
X. Ping andT. Mingshu,Il Cimento 85 (1988) 33.
D. A. Lange, H. M. Jennings andS. P. Shah,J. Am. Ceram. Soc. 76 (1993) 589.
Rilem,Mater. Construct. 23 (1990) 461.
Y. Jenq andS. P. Shah,J. Eng. Mech. 111 (1985) 1227.
D. A. Lange, H. M. Jennings andS. P. Shah,J. Mater. Sci. 28 (1994) 3879.
K. L. Scrivner, A. Bentur andP. L. Pratt,Adv. Cem. Res. 1 (1988) 230.
Lybimova, T. Yu andPinus,Colloid J. USSR 24 (1962) 491.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zampini, D., Jennings, H.M. & Shah, S.P. Characterization of the paste-aggregate interfacial transition zone surface roughness and its relationship to the fracture toughness of concrete. J Mater Sci 30, 3149–3154 (1995). https://doi.org/10.1007/BF01209230
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01209230