Fumigating Bridges: Western States Take on Advances in Silica Fume for High-Performance Bridge Construction

This article describes the experiences of three state DOTs (Arizona, Colorado, and Oregon) with high-performance concrete (HPC) in bridge decks. Almost all HPC uses silica fume as a mineral admixture, which reduces the permeability and the rate of chloride penetration and increases concrete’s resistance to damage from the freeze-thaw cycle. The Arizona project involved replacing a deteriorated concrete bridge deck built in 1968. It is supported by a three-span, five-steel-girder system with a skew of 43 degrees. The Colorado project was an investigation of innovative materials to reconstruct the I-225 and Parker Road interchange southeast of Denver. The Oregon project involved strategies to design a bridge with a service life of 100 to 120 years, using a high share of silica fume in the total cementitious materials for greatest durability.

Language

  • English

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Filing Info

  • Accession Number: 01046882
  • Record Type: Publication
  • Source Agency: UC Berkeley Transportation Library
  • Files: BTRIS, TRIS
  • Created Date: Mar 5 2007 6:24PM