Author

J. A. TINKER University of Leeds
Abstract

Using scanning electron microscopic analysis, the pore distribution and structure of several lightweight aggregates was investigated. Three structurally different types of aggregates were incorporated into lightweight concretes and their thermal conductivities measured. Concrete blocks made from aggregates whose microstructure is crystalline with interconnected pores conducted more heat than those containing aggregates whose microstructure is vitreous with discrete pores.