00789737

Component

https://doi.org/10.3141/1696-62

http://scholar.google.com...wens&publication_year=2000

The current statewide standard for New York State bridge decks is Class HP (high-performance) concrete. This mix was introduced in April 1996 to increase deck durability by reducing cracking and permeability. Since its introduction, more than 80 bridge decks have been built with Class HP concrete. To compare the performance of Class HP concrete with that of previously specified concrete, the decks were visually inspected. Results indicated that Class HP decks performed better than previously specified concrete in resisting both longitudinal and transverse cracking. Furthermore, of the 84 decks inspected, 49% exhibited no cracking at all, but of those that had cracked, 88% exhibited equal or less longitudinal cracking and 80% exhibited equal or less transverse cracking than previously specified concrete. A final result showed that average transverse crack density on Class HP decks, excluding uncracked decks, was 6.9 cm/sq m. This value is comparable with crack densities for other decks (not using HP mix) that were reported in recent literature.

This paper appears in Transportation Research Record No. 1696, Fifth International Bridge Engineering Conference, April 3-5, 2000, Tampa, Florida, Volume 2. The revised name of this series is Transportation Research Record: Journal of the Transportation Research Board.

English

p. 193-196

2000

Transportation Research Record

Fifth International Bridge Engineering Conference

0309071224

Figures (2) ; References (6) ; Tables (5)

Bridge decks; Cracking; High performance concrete; Inspection; Longitudinal cracking; Performance evaluations; Permeability; Transverse cracking

Crack density

New York (State)

Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete

TRIS, TRB, ATRI

Mar 9 2001 12:00AM