Impact of specification changes on chloride-induced corrosion service life of bridge decks

Autor:	Trevor J. Kirkpatrick, Michael M Sprinkel, Christine M. Anderson-Cook, Richard E. Weyers
Rok vydání:	2002
Předmět:	Engineering business.industry Service life Forensic engineering General Materials Science Building and Construction Structural engineering business Bridge (interpersonal) Corrosion
Zdroj:	Cement and Concrete Research. 32:1189-1197
ISSN:	0008-8846
DOI:	10.1016/s0008-8846(02)00760-3
Popis:	A model was developed to determine the time to first repair and to subsequently rehabilitate concrete bridge decks exposed to chloride deicer salts. Said model incorporates the statistical nature of factors affecting the corrosion process. The time to first repair and rehabilitate was predicted for 10 bridge decks built in Virginia between 1981 and 1994. The model was validated using historical service life data for 129 bridge decks built in Virginia between 1968 and 1972. The time for rehabilitation predicted for the newer set of bridge decks was approximately 13 years longer than the normalized time for rehabilitation projected for the older bridge decks. The increase in time for rehabilitation for the newer set of bridge decks was attributed to a reduction in the specified maximum water/cement ratio and increase in clear cover depth. The probabilistic model is shown to be an advancement over the deterministic model currently in use.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ef7ae2b19ad102db9bf0514813595f95 https://doi.org/10.1016/s0008-8846(02)00760-3 Zobrazit plný text záznamu Full Text from ScienceDirect