Hostname: page-component-8448b6f56d-jr42d Total loading time: 0 Render date: 2024-04-23T07:37:11.003Z Has data issue: false hasContentIssue false
  • English
  • Français

Microcrack Study of Cement-Based Materials by Means of Image Analysis

Published online by Cambridge University Press:  21 February 2011

Yahia Alhassani ,
Alain Bascoul  and
Erick Ringot
Yahia Alhassani
Affiliation:
L.M.D.C. INSA-UPS Genie Civil, complexe scientifique de rangueil, 31077 Toulouse CEDEX, France
Alain Bascoul
Affiliation:
L.M.D.C. INSA-UPS Genie Civil, complexe scientifique de rangueil, 31077 Toulouse CEDEX, France
Erick Ringot
Affiliation:
L.M.D.C. INSA-UPS Genie Civil, complexe scientifique de rangueil, 31077 Toulouse CEDEX, France
Get access

Abstract

The relationship between microscopical damaging of concrete and its mechanical parameters such as Young's modulus and degree of reversibility is a basic issue. In the same time, transport properties and of course the durability of civil engineering and hydraulic structures are linked to the state of microcracking.

The replica technique has been developed in our laboratory in order to study microcracks with a scanning electron microscope. This non-destructive method allows observation of the imprint of the concrete surface and to follow the evolution of the alterations with time. An objective quantitative analysis requires numerous replicas and many microscopic fields within each replica.

After a brief state of the art of the automatic method of extraction of lines by image processing, we propose a specific algorithm of image analysis which allows the cleaning of the pictures and the extraction of the microcrack skeleton. Today, this procedure has been validated on cement paste samples. It has to be improved to be applied on concrete.

The measured parameters are the microcrack specific lengths and their orientation. The objective values measured by means of this procedure compare favorably to results obtained by hand drawing.

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 , 43
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. Bascoul, A., Maso, J.C.. Influence of the intermediate stress on the mechanical behaviour of concrete under biaxial compression. Materials and building Research, Annales de l'Tnstitut Technique du Bâtiment et des Travaux Publics, supp.n° 351, june (1977).Google Scholar
2. Ollivier, J.P., A non destructive procedure to observe the microcracks of concrete by scanning electron microscopy, Cement and Concrete Research, Vol. 15, 1055–1060, (1985).Google Scholar
3. Ringot, E., Ollivier, J.P., Maso, J.C., Caracterization of the initial state of Concrete with regard to microcracking, Cement and Concrete Research, Vol. 17, 411–419, (1987).Google Scholar
4. Bascoul, A., Ollivier, J.P., Poushanchi, M., Stable microcracking of Concrete subjected to the tensile Gradient, Cement and Concrete Research, Vol.9, 81–88, (1989).Google Scholar
5. Massat, M., Ollivier, J.P., Ringot, E., Microscopic analysis of microcracking damage in Concrete and durability, 3rd Euroseminar on microscopy applied to bulding materials, (1997).Google Scholar
6. Ringot, E., Automatic quantification of microcracks network by stereological method of total projections in mortars and Concrete, Cement and Concrete Research, Vol.18, 35–43, (1988).Google Scholar
7. Meyer, F., Serra, J., Filters; From theory to practice, Acta Stereologica, (1989), 8/2, 503–508.Google Scholar
8. Kurdy, M.B., Jeulin, D., Directional mathematical morphology operations, Acta Stereologica (1989), 8/2, 473–480.Google Scholar
9. Lafon, D., Boivin, P., Bonton, P., Provost, A., Image analysis applied to the study of volcanic formations, Acta Stereologica, (1989), 8/2, 615–620.Google Scholar
10. Salomon, M., , Panetier, Quantification du degrě d'avancement de l'alcali-réaction dans les bétons et la néofissuration associée, 3rd CANNET/ACI, international conference on durability of Concrete, Nice, (1994), 383–401.Google Scholar
11. Coster, M., Chermant, J.L., Precis d'Analyse d'Images, presses du CNRS, (1989), 271.Google Scholar