Durability of Cementitiously Stabilized Aggregate Bases for Pavement Application

Variations in environmental conditions have been recognized by pavements engineers as a major factor affecting pavement performance. These variations resulting from freeze-thaw (F-T) or wet-dry (W-D) actions can significantly affect the engineering properties of pavement material. In this study, the effect of W-D and F-T cycles, on the resilient modulus (Mr) of stabilized aggregate bases is examined. A total of four aggregates is utilized. Cylindrical specimens are stabilized with CKD, CFA, and FBA, and then cured for 28 days. After curing, specimens are subjected to W-D or F-T cycles prior to testing for Mr. Results show that the changes in Mr values due to F-T or W-D cycles depend on the stabilizing agent properties and physical properties represented by maximum dry density and optimum moisture content.