Several aspects of the fatigue design of steel and composite steel-concrete structures are discussed. Existing specifications are reviewed together with the shortcomings in currently available fatigue design data. The importance of load and stress histories is emphasized and the influence of structural connections and welding in particular on the fatigue strength of structures is pointed out. Problems associated with the selection of test specimens for fatigue tests are discussed.
The history of development of expansive cements, their composition, properties, and recent applications are briefly reviewed. This is followed by a fairly comprehensive review of the use of expansive cements to reduce drying-shrinkage cracking in cement-treated basecourses. With regard to soil stabilization using expansive cements, potential problems are discussed and specific recommendations for further work are made.