Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Optimization of Concretes and Repair Materials for Corrosion Resistance
A major cause of this concrete deterioration (cracking, delaination, and spalling) is the corrosion of embedded steel reinforcement, initiated by chloride ions from deicing salts and salt water spray that have penetrated the concrete cover. The research was structured to address the three prinicipal rate phenomena that control corrosion-induced deterioration of concrete bridge components: (1) chloride permeation rate, (2) corrosion rate of the steel bar, and (3) deterioration/damage rate. Low chloride permeability is critical to achieving the desired life of a concrete structure. A predictive model was developed to determine the effect of concrete properties on chloride permeability. The concrete properties that had a significant effect were in order of greatest effect: mineral admixture, coarse aggegate, water-cement ratio, cement chemistry, and fine aggregate. The mineral admixture had nearly twice the effect of other concrete variables on the chloride permeability. The addition of any of the mineral admixtures tested tended to decrease the chloride permeability, Silica fume was the most effective.
Optimization of Concretes and Repair Materials for Corrosion Resistance
A major cause of this concrete deterioration (cracking, delaination, and spalling) is the corrosion of embedded steel reinforcement, initiated by chloride ions from deicing salts and salt water spray that have penetrated the concrete cover. The research was structured to address the three prinicipal rate phenomena that control corrosion-induced deterioration of concrete bridge components: (1) chloride permeation rate, (2) corrosion rate of the steel bar, and (3) deterioration/damage rate. Low chloride permeability is critical to achieving the desired life of a concrete structure. A predictive model was developed to determine the effect of concrete properties on chloride permeability. The concrete properties that had a significant effect were in order of greatest effect: mineral admixture, coarse aggegate, water-cement ratio, cement chemistry, and fine aggregate. The mineral admixture had nearly twice the effect of other concrete variables on the chloride permeability. The addition of any of the mineral admixtures tested tended to decrease the chloride permeability, Silica fume was the most effective.
Optimization of Concretes and Repair Materials for Corrosion Resistance
N. G. Thompson (Autor:in) / D. R. Lankard (Autor:in)
1999
168 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Construction Materials, Components, & Equipment , Corrosion & Corrosion Inhibition , Concretes , Reinforcing steels , Corrosion prevention , Chlorides , Permeability , Compressive strength , Elastic properties , Flexural strength , Service life , Water cement ratio , Admixtures
Improved Concretes for Corrosion Resistance
| NTIS | 1997
Corrosion Resistance of Montmorillonite-Modified Dense Concretes
| Springer Verlag | 2018
Corrosion Resistance of Montmorillonite-Modified Dense Concretes
| Springer Verlag | 2016