Presented are the results of a laboratory investigation dealing with the properties of various composites made with different proportions of preconditioned fluidized bed combustion (FBC) spent bed, pulverized coal combustion (PCC) fly ash, natural fine aggregate, and portland cement. The extent to which the proposed composites can replace currently used materials is examined, and an alternate method for rebuilding low-volume county and other secondary roads is provided. Test results show that compressive strength and linear expansion of PCC-FBC composites improved with increases in PCC fly ash content of the matrix. In addition, compressive strength increased and expansion decreased when testing conditions changed from soaked to sealed to air-dried. When a low dosage of portland cement was added, an average increase of 50 percent in compressive strength and a decrease of 35 percent in 1-year linear expansion were found.


    Access

    Download

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Laboratory Investigation of Coal Wastes for Secondary Roads


    Additional title:

    Transportation Research Record


    Contributors:
    Ghafoori, N. (author) / Wang, L. (author)


    Publication date :

    1998-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Utilization of Industrial Wastes in Low-Volume Roads

    Mathur, Sudhir / Soni, S. K. / Murty, Avsr | Transportation Research Record | 1999


    Importance of secondary roads

    Gohier, E.H. | Engineering Index Backfile | 1947


    Laboratory for roads and traffic

    Engineering Index Backfile | 1967


    The utility of secondary roads

    Engineering Index Backfile | 1897