The development and implementation of a more durable concrete mixture for bridge decks are described. The work began with review and evaluation of published results of research conducted by others and resulted in a new concrete mixture that has been designated Class HP for high performance. It has better handling and workability characteristics, improved resistance to chloride intrusion, and greater resistance to cracking, and it displays little or no surface scaling. Increased strength was not a primary concern in producing a high-performance concrete for bridge decks, but greater ultimate strength was nevertheless achieved. Class HP concrete is a modification of New York State's standard Class H concrete, incorporating two pozzolan substitutions for cement—20 percent Class F fly ash and 6 percent microsilica. On the basis of satisfactory laboratory testing, field trial, and field production it is being recommended for use statewide. Initial increases in cost are expected to be minimized as concrete producers and contractors become familiar with its mixing and placement. The first-cost increase will be easily offset by more than doubling service life expectancy. Further investigation is progressing to optimize performance of Class HP concrete in bridge decks and for its use in other concrete applications.


    Zugriff

    Download

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Developing High-Performance Concrete Mix for New York State Bridge Decks


    Weitere Titelangaben:

    Transportation Research Record


    Beteiligte:


    Erscheinungsdatum :

    1996-01-01




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Developing High-Performance Concrete Mix for New York State Bridge Decks

    Streeter, Donald | Transportation Research Record | 1996



    Low-Cracking, High-Performance Concrete Bridge Decks

    Darwin, David / Browning, Joann / Lindquist, Will et al. | Transportation Research Record | 2010


    Applying Statistical Methods for Further Improvement of High-Performance Concrete for New York State Bridge Decks

    Bajorski, Peter / Streeter, Donald A. / Perry, Robert J. | Transportation Research Record | 1997