ABSTRACT
The last two or three decades have seen a substantial increase in both the range and quality of the materials used in cementitious grouts, and the understanding of their behaviour, although the latter is by no means complete. It is the aim of this chapter to provide a description of:
• the chemical and physical nature of the most important of these materials, which include Portland and aluminate cements, cement replacement materials (also known as mineral admixtures) and chemical admixtures;
• the processes involved when these react with water and each other; and • the structure of the products so formed.
