ABSTRACT
Radical Concrete Technology. Edited by R K Dhir and P C Hewlett. Published in 1996 by E & FN Spon, 2-6 Boundary Row, London SE1 8HN, UK. ISBN 0 419 21480 1. ABSTRACT. Pore reduced cements are a range of cement products obtained from the mechanical pressing of immature Portland cement pastes. The pressing technique permits the partial removal of mix water which is held in the developing microstructure so that water: cement ratio is reduced from the normal mixing value of 0.3 to around 0.1. Continuing hydration of cement in the compacted paste leads to an increasing densification (porosity reduction) imparting considerably improved mechanical properties to the product. The durability of high performance cements is as important as strength. This paper therefore addresses durability, linking microstructural characteristics of PRC with its performance in aggressive exposure media. Keywords: Pore Reduced Cements, High Performance, Durability, Porosity, Acid degradation. Dr Donald E Macphee is a lecturer in the Department of Chemistry at the University of Aberdeen. His research interests include cement-based waste immobilisation, reinforcement corrosion, high performance cements and microstructural characterisation of cements. Dr Dieter Israel is a Postdoctoral Research Assistant in the Department of Chemistry at the University of Aberdeen. He is a graduate of the Technological University Bergakademie Freiberg, Germany, with a Diploma in Chemistry (1989) and a PhD in gypsum-related chemistry (1994).
