Environmental Testing and Evaluation of Stabilized Wastes, Performance ofStabilized Materials, and New Aggregate Tests

摘要

The seven papers in the first group describes investigations related to materialssuch as fly ash, AMD sludge, phosphogypsum, FGD gypsum, fluorogypsum, oil and gas well sludge, and MSW combustion bottom ash. The investigations focus on leaching behavior of the waste materials and what effects cement, lime, fly ash, and bitumen stabilization have on the characteristics of the leachates. The second group of five papers presents information on laboratory characterization and field performance evaluation of stabilized bases. These papers provide information on causes of expansion in cement-treated bases, how to control shrinkage cranking in cement or lime stabilized bases, and beneficial effects of lime additions to caliche and limestone bases. Also presented is information on engineering properties of fine-grained oils stabilized with fly ash and lime or cement, and cement-stabilized recycled concrete aggregate reinforced with strips of reclaimed plastic or tire wires and tire chunks. The third group of six papers describes engineering properties of waste materials and natural aggregates. Useful information on new developments in performance-oriented aggregate testing is presented.