1. Tests on plain and reinforced concrete made with Haydite aggregates;Richart,1931
2. Lightweight aggregate from pulverised-fuel ash;Kinniburgh;Concrete and Constructional Engineering,1956
3. Building materials from pulverised-fuel ash;Hobbs;British Chemical Engineering,1959
4. Concrete technology: Volume 1 - Properties of materials;Orchard,1979
5. Lightweight Concrete;Short,1968