Fly Ash in Concrete

Fly ash is an important industrial by-product, with more than 170 million tonnes produced annually throughout the world. It is the fine particulate material which is collected from the stack gases of power stations burning pulverized coal and it is being increasingly used as a partial replacement for cement in concrete and other cement-based construction materials. Fly ash is an extremely variable material, and its effect on concrete properties depend on the nature and burning conditions of the coal from which it derives. Substantial research and development programmes in many parts of the world are being undertaken to investigate the properties and performances of fly ash in concrete, to ensure satisfactory, economic utilization. This book is a state-of-the-art Report on the subject, compiled by an international expert committee under the auspices of RILEM, the International Union of Testing and Research Laboratories for Materials and Structures. It reports and evaluates more than 800 literature sources. In the first chapter, the characterization and properties of fly ash in relation to the coal and burning conditions in the power station are described. The behaviour of fresh mortar and concrete is covered next. A major part of the book deals with hardened mortar and concrete, and covers hydration, strength, deformations, frost resistance, chemical resistance and carbonation, with special attention given to the deformation behaviour of fly ash concretes. The fourth chapter discusses other uses of fly ash in construction. RILEM Recommendations for Test Methods for Determining the Properties of Fly Ash, and Fly Ash in concrete are given in an Appedix. Fly Ash in Concrete: Properties and Performance covers all the main significant areas of research into the subject and provides researchers and construction materials specialists with an authoritative guide and reference source for current and future research.