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- W780855015 abstract "Durability tests used in this study include the following: 20-hour and 28-day compressive strength, 28-day flexural strength, resistance to freezing and thawing, scaling in the presence of deicing salt, and chloride permeability. The determination of air void parameters and their relationship to the durability of laboratory test specimens and the performance of selected in-service bridge elements is an integral part of the work. The results illustrate the difficulties in relating air void parameters to performance both in the field and in the laboratory. In the field, scaling does not correlate well with air content, spacing factor and specific surface (ASTM C457) in both the Alberta study and a larger similar study in the U.S. In the laboratory, the entrainment of air void systems in superplasticized silica fume concretes that comply with currently accepted criteria is shown to present no real difficulty with the particular admixtures employed. Howver, the results of durability tests show that scaling in particular may occur even when the air void system meets these criteria, that accelerated curing may increase scaling and chloride permeability, and that silica fume enhances resistance to scaling as well as impermeability to chloride. (Author/TRRL )" @default.
- W780855015 created "2016-06-24" @default.
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- W780855015 date "1989-01-01" @default.
- W780855015 modified "2023-09-27" @default.
- W780855015 title "DURABILITY OF SILICA FUME CONCRETES FOR HIGH-STRENGTH PRECAST PRESTRESSED CONCRETE BRIDGE GIRDERS IN ALBERTA . PROCEEDINGS OF THE 1989 ANNUAL CONFERENCE OF THE ROADS AND TRANSPORTATION ASSOCIATION OF CANADA, CALGARY, ALBERTA, SEPTEMBER 17-21, 1989" @default.
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