Hostname: page-component-76fb5796d-vvkck Total loading time: 0 Render date: 2024-04-25T20:21:48.841Z Has data issue: false hasContentIssue false
  • English
  • Français

Image Analysis of Fly Ash in the Characterization of the Shape of the Grains

Published online by Cambridge University Press:  21 February 2011

M. Barrioulet ,
H. Cros ,
B. Husson  and
E. Ringot
M. Barrioulet
Affiliation:
LMDC INSA/UPS Génie Civil, complexe scientifique de Rangueil 31077 Toulouse, FRANCE
H. Cros
Affiliation:
LMDC INSA/UPS Génie Civil, complexe scientifique de Rangueil 31077 Toulouse, FRANCE
B. Husson
Affiliation:
LMDC INSA/UPS Génie Civil, complexe scientifique de Rangueil 31077 Toulouse, FRANCE
E. Ringot
Affiliation:
LMDC INSA/UPS Génie Civil, complexe scientifique de Rangueil 31077 Toulouse, FRANCE
Get access

Abstract

Fly ash from power stations is used as concrete additive to improve strength and durability. Surprisingly, studies of ashes of identical mineralogical composition from two different places have reported different results in terms of the rheological properties of the fresh material. The viscosity of the pastes made from these different fly ashes seems to be linked to the proportion of spherical and smooth-shaped grains found in them. A quantitative image analysis was carried out to characterize the shape of the grains of these two ashes from different geographical origins. The main result proves that the higher the glassy particle content of the fly ash, the more the hydraulic matrix is fluid.

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 , 125
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. Schiessl, P., Hardtl, R. The Change of Mortars Properties as Result of Fly Ash Processing, 3th Int. Conf. Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete, Trondheim, Norway (ACI, Detroit Michigan, 1989) edited by Malhotra, V. M., pp. 274–294 Google Scholar
2. Carles-Gibergues, A. and Husson, B. Effects of the Use of Sulfitic Fly Ash in mortars and Concretes, 4th Int. Conf. Fly Ash, Silica Fume, Slag and Natural Pozzolans in Concrete, Istambul, Turkey, (CANMET ACI, Detroit, Michigan, 1992) edited by Malhotra, V. M., p. 671.Google Scholar
3. Beucher, S., Ph.D. thesis, centre de morphologie mathématique, école des Mines de Paris, 1990.Google Scholar
4. Rivest, J.F., Beucher, S., Delhomme, J.P. Marker-Controlled Picture Segmentation Applied to Electrical Logging Images,(Proceeding SPIE, Vol 1451 Non linear Image Processing II, 1991)Google Scholar
5. Costner, M., Chermant, J.L., Précis d'analyse d'images, (presses du CNRS, Paris, 1989), p. 290.Google Scholar