Kyle A. Riding, Jonathan Varner, Cale Armstrong
Aggregate Durability, Freeze-Thaw Cycles, Limestone Aggregate, Rock Salt
Non-durable coarse aggregate in concrete pavement can break down under repeated freeze-thaw cycles.
Application of rock salt may increase the severity of exposure conditions because of trace compounds, such as calcium
sulfate, in rock salt. Concrete and saw-cut limestone specimens were also subjected to wet-dry cycles in varying salt
solutions to examine the influence of trace compounds in rock salt. Subsequently, limestone aggregate in concrete was
subjected to freeze-thaw cycling in two methods: salt-treating the aggregate before batching concrete, and half-immersing
concrete specimens in rock salt solution during freeze-thaw cycling.