Editorial

With increasing pressures on the cement industry to comply with strict environmental regulations and also to manage the dwindling raw material sources, there has been a noticeable reduction in the clinker factor worldwide. The move towards increased use of supplementary cementing materials is also beneficial from the economic and durability point of view. However, the successful utilisation of these additives in concrete is hampered by a lack of information about the mechanisms of performance of such materials when used in combination with cement. The emphasis in current research is on bridging this gap, particularly in the understanding of the chemistry of cementitious blends.