United States Department of Transportation
i
Rational and Safe Design of Concrete Transportation Structures for Size Effect and Multi-Decade Sustainability
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2012-10-01
[PDF-3.03 MB]
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Edition:Final report.
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Abstract:The overall goal of this project was to improve the safety and sustainability in the design of large
prestressed concrete bridges and other transportation structures. The safety of large concrete
structures, including bridges, has been insufficient. This is evidenced by the worldwide rate of failures
of very large concrete structures which has historically been about 1 in a thousand per lifetime,
although 1 in a million is the maximum tolerable. Improvement necessitates taking into account the
size effect on quasibrittle failure loads, a phenomenon that has been mostly ignored by the ACI code
committee until recently, but now is considered seriously, largely as a result of this project.
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