Manual of Procedures for Bridge Deterioration Studies: Fid-Bau Portal

Manual of Procedures for Bridge Deterioration Studies

T. D. Larson / J. J. Malloy / J. T. Price

Part I gives a detailed description of selected deteriorated bridge decks, and attempts to determine the cause of deterioration of each deck. Also given is a detailed description of construction practices at four new bridge decks, including slump, air content, water content, mixing time, etc., and the location of each load on the deck. The results indicate marked differences between the specified amounts and those actually obtained. Part II is a description of statistical methods applied to quality control of concrete placed on two bridge decks, and a study of air-void system parameters and their relation to concrete durability. The control charts shown indicate that the concrete produced does not conform to State specifications, especially the slump. Of particular interest in the study of air content is the statement that all parameters except air content showed a significant correlation with durability at the 95 percent significance level. Part III is a review of the major findings and included are recommendations, based largely on published work rather than on their research, that should lead to improved performance of bridge deck concrete. Volume II contains a description of field survey procedures and complete field survey records for 1966-67. Report No. 5 is a manual of procedures to be used in the evaluation of bridge deck concrete. (Author)