More than a hundred selected papers which were presented at the 1999 and 2001 International Ash Utilization Symposia. The papers deal with the chemistry and mineralogy of fly ash, usage in construction and mining industry, environmental and health aspects.

Short description of common retarders and their mechanismn of retardation.

A table with chemical and physical requirements listed in the ASTM C618 specification for the three classes of pozzolans: Class N, Class F, and Class C.

Common accelerators and their effect on cement and concrete.