Abstract
Waste repositories for the belowground disposal of low-level radioactive waste rely greatly on the durability of concrete for their required 500-year service life. A research program is in progress based on laboratory testing of concretes containing either Type 1 cement or cements containing 65 and 75 percent of blast-furnace slag, each at 4 water-cement ratios. It has been established that the degradation of the concrete will depend on the rate of ingress of corrosive agents - chlorides, sulphate ions and CO{sub 2}. The ionic profiles and the kinetics of diffusion of these ions in the concretes have been measured by Secondary Electron Microscope (SEM) and Energy Dispersive X-ray Analysis (EDXA) techniques, and the results plotted according to a mathematical model. Predictions for service life of the concrete have been made from this model. These predictions have been correlated with properties of the concrete obtained from micro-structural, thermochemical and permeability measurements. The improvements in concrete durability due to blast-furnace slag additions are illustrated and discussed.
Feldman, R. F.;
Beaudoin, J. J.;
[1]
Philipose, K. E.
- National Research Council of Canada, Ottawa, ON (Canada)
Citation Formats
Feldman, R. F., Beaudoin, J. J., and Philipose, K. E.
Use of blast-furnace slag in making durable concrete for waste management repositories.
Canada: N. p.,
1991.
Web.
Feldman, R. F., Beaudoin, J. J., & Philipose, K. E.
Use of blast-furnace slag in making durable concrete for waste management repositories.
Canada.
Feldman, R. F., Beaudoin, J. J., and Philipose, K. E.
1991.
"Use of blast-furnace slag in making durable concrete for waste management repositories."
Canada.
@misc{etde_10157257,
title = {Use of blast-furnace slag in making durable concrete for waste management repositories}
author = {Feldman, R. F., Beaudoin, J. J., and Philipose, K. E.}
abstractNote = {Waste repositories for the belowground disposal of low-level radioactive waste rely greatly on the durability of concrete for their required 500-year service life. A research program is in progress based on laboratory testing of concretes containing either Type 1 cement or cements containing 65 and 75 percent of blast-furnace slag, each at 4 water-cement ratios. It has been established that the degradation of the concrete will depend on the rate of ingress of corrosive agents - chlorides, sulphate ions and CO{sub 2}. The ionic profiles and the kinetics of diffusion of these ions in the concretes have been measured by Secondary Electron Microscope (SEM) and Energy Dispersive X-ray Analysis (EDXA) techniques, and the results plotted according to a mathematical model. Predictions for service life of the concrete have been made from this model. These predictions have been correlated with properties of the concrete obtained from micro-structural, thermochemical and permeability measurements. The improvements in concrete durability due to blast-furnace slag additions are illustrated and discussed.}
place = {Canada}
year = {1991}
month = {Feb}
}
title = {Use of blast-furnace slag in making durable concrete for waste management repositories}
author = {Feldman, R. F., Beaudoin, J. J., and Philipose, K. E.}
abstractNote = {Waste repositories for the belowground disposal of low-level radioactive waste rely greatly on the durability of concrete for their required 500-year service life. A research program is in progress based on laboratory testing of concretes containing either Type 1 cement or cements containing 65 and 75 percent of blast-furnace slag, each at 4 water-cement ratios. It has been established that the degradation of the concrete will depend on the rate of ingress of corrosive agents - chlorides, sulphate ions and CO{sub 2}. The ionic profiles and the kinetics of diffusion of these ions in the concretes have been measured by Secondary Electron Microscope (SEM) and Energy Dispersive X-ray Analysis (EDXA) techniques, and the results plotted according to a mathematical model. Predictions for service life of the concrete have been made from this model. These predictions have been correlated with properties of the concrete obtained from micro-structural, thermochemical and permeability measurements. The improvements in concrete durability due to blast-furnace slag additions are illustrated and discussed.}
place = {Canada}
year = {1991}
month = {Feb}
}