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- W3134984908 abstract "Some U.S. transportation agencies have recently applied mass concrete provisions to drilled shafts, imposing limits on maximum temperatures and maximum temperature differentials. On one hand, temperatures commonly observed in large-diameter drilled shafts have been observed to cause delayed ettringite formation (DEF) and thermal cracking in above-ground concrete elements. On the other, the reinforcement and confinement unique to drilled shafts should provide resistance to thermal cracking, and the provisions that have been applied are based on dated practices for above-ground concrete. This paper establishes a rational procedure for design of drilled shafts for durability requirements in response to hydration temperatures, which addresses both DEF and thermal cracking. DEF is addressed through maximum temperature differential limitations that are based on concrete mix design parameters. Thermal cracking is addressed through calculations that explicitly consider the thermo-mechanical response of concrete for predicted temperatures. Results from application of the procedure indicate consideration of DEF and thermal cracking potential for drilled shafts is prudent, but provisions that have been applied to date are overly restrictive in many circumstances, particularly the commonly adopted 35°F maximum temperature differential provision." @default.
- W3134984908 created "2021-03-15" @default.
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- W3134984908 date "2021-03-01" @default.
- W3134984908 modified "2023-09-25" @default.
- W3134984908 title "Establishing and Satisfying Thermal Requirements for Drilled Shaft Concrete Based on Durability Considerations" @default.
- W3134984908 cites W2078295613 @default.
- W3134984908 doi "https://doi.org/10.1177/0361198121996357" @default.
- W3134984908 hasPublicationYear "2021" @default.
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