Utilization of Phosphogypsum-Based Slag Aggregate in Portland Cement and Asphaltic Concrete Mixtures

by Paul T. Foxworthy, (M.ASCE), Louisiana State Univ, Baton Rouge, United States,



Document Type: Proceeding Paper

Part of: Aviation Crossroads: Challenges in a Changing World

Abstract:

This study centers around the potential utilization of phosphogypsum-based slag aggregate as a substitute for coarse aggregate in both portland cement and asphaltic concrete surfaces for highway construction. The physical properties and durability behavior of the slag aggregate were explored, and mixtures were developed and tested for both types of pavement surface. Recommendations were made concerning the most suitable mix designs for both materials.

Subject Headings: Slag | Aggregates | Asphalt concrete | Portland cement | Concrete pavements | Infrastructure construction | Highway engineering

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