Abstract
A waste repository for the belowground disposal of low-level radioactive waste, labelled IRUS (Intrusion Resistant Underground Structure), is planned at the Chalk River Laboratories. It relies greatly on the durability of concrete for a minimum of 500 years of service life. A research program based on laboratory testing to design a durable concrete and predict its useful engineered service life is in progress. The durability of concrete depends on its resistance to deterioration from both internal and external causes. Since the rate of degradation depends to a major extent on the rate of ingress of aggressive ions into concrete, laboratory testing is in progress to establish the diffusion rates of chlorides and sulphate ions. A total of 1000 concrete specimens and 500 paste specimens are being exposed at 22 degrees and 45 degrees C to twenty-five different combinations of corrosive agents, including CO{sub 2}. Procedures to measure the ionic penetration profile and to determine the factors controlling diffusion of ions in the various concretes have been developed. The paper presents the initial results from the research program and the longevity predictions to qualify concretes for the IRUS waste repository, based on 16 months of diffusion testing on laboratory specimens.
Philipose, K E;
[1]
Feldman, R F;
Beaudoin, J J
[2]
- Atomic Energy of Canada Ltd., Chalk River, ON (Canada). Chalk River Nuclear Labs.
- National Research Council of Canada, Ottawa, ON (Canada)
Citation Formats
Philipose, K E, Feldman, R F, and Beaudoin, J J.
Durability predictions from rate of diffusion testing of normal portland cement, fly ash, and slag concrete.
Canada: N. p.,
1991.
Web.
Philipose, K E, Feldman, R F, & Beaudoin, J J.
Durability predictions from rate of diffusion testing of normal portland cement, fly ash, and slag concrete.
Canada.
Philipose, K E, Feldman, R F, and Beaudoin, J J.
1991.
"Durability predictions from rate of diffusion testing of normal portland cement, fly ash, and slag concrete."
Canada.
@misc{etde_10157260,
title = {Durability predictions from rate of diffusion testing of normal portland cement, fly ash, and slag concrete}
author = {Philipose, K E, Feldman, R F, and Beaudoin, J J}
abstractNote = {A waste repository for the belowground disposal of low-level radioactive waste, labelled IRUS (Intrusion Resistant Underground Structure), is planned at the Chalk River Laboratories. It relies greatly on the durability of concrete for a minimum of 500 years of service life. A research program based on laboratory testing to design a durable concrete and predict its useful engineered service life is in progress. The durability of concrete depends on its resistance to deterioration from both internal and external causes. Since the rate of degradation depends to a major extent on the rate of ingress of aggressive ions into concrete, laboratory testing is in progress to establish the diffusion rates of chlorides and sulphate ions. A total of 1000 concrete specimens and 500 paste specimens are being exposed at 22 degrees and 45 degrees C to twenty-five different combinations of corrosive agents, including CO{sub 2}. Procedures to measure the ionic penetration profile and to determine the factors controlling diffusion of ions in the various concretes have been developed. The paper presents the initial results from the research program and the longevity predictions to qualify concretes for the IRUS waste repository, based on 16 months of diffusion testing on laboratory specimens.}
place = {Canada}
year = {1991}
month = {Sep}
}
title = {Durability predictions from rate of diffusion testing of normal portland cement, fly ash, and slag concrete}
author = {Philipose, K E, Feldman, R F, and Beaudoin, J J}
abstractNote = {A waste repository for the belowground disposal of low-level radioactive waste, labelled IRUS (Intrusion Resistant Underground Structure), is planned at the Chalk River Laboratories. It relies greatly on the durability of concrete for a minimum of 500 years of service life. A research program based on laboratory testing to design a durable concrete and predict its useful engineered service life is in progress. The durability of concrete depends on its resistance to deterioration from both internal and external causes. Since the rate of degradation depends to a major extent on the rate of ingress of aggressive ions into concrete, laboratory testing is in progress to establish the diffusion rates of chlorides and sulphate ions. A total of 1000 concrete specimens and 500 paste specimens are being exposed at 22 degrees and 45 degrees C to twenty-five different combinations of corrosive agents, including CO{sub 2}. Procedures to measure the ionic penetration profile and to determine the factors controlling diffusion of ions in the various concretes have been developed. The paper presents the initial results from the research program and the longevity predictions to qualify concretes for the IRUS waste repository, based on 16 months of diffusion testing on laboratory specimens.}
place = {Canada}
year = {1991}
month = {Sep}
}