Lightweight Concrete for the Route 33 Bridge over the Mattaponi River

This article describes the use of lightweight concrete in three units of the Route 33 bridge over the Mattaponi River in Virginia. The author describes the spans used, the bulb-tee beams, the pier segments, the selection of material properties, the target values for the lightweight aggregate hydraulic cement concrete, chloride permeability, specification requirements for the acceptance of lightweight aggregate hydraulic cement concrete, testing requirements, equilibrium density, fresh or plastic density, and limitations on pumping the deck concrete. Lightweight high performance concrete was specified for the precast, prestressed beams as well as the cast-in-place deck slabs to achieve longer span lengths while reducing foundation loads. One table lists separate target values for compressive strength, creep, shrinkage, density, air content, and modulus of elasticity for the concrete used in the beams and decks. A second table lists separate values for creep, shrinkage, density, and modulus of elasticity for the concrete used in the beams and decks.

Language

  • English

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Filing Info

  • Accession Number: 01103563
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 20 2008 7:05AM