Concrete is a material that gives architects and engineers great control over its form and appearance, especially where its visual qualities have been fully considered at the design stage. The appearance of concrete can be radically altered simply by intelligent selection of materials, but pigments and surface treatments extend the palette further, and understanding of the interactions between concrete surfaces and the environment can minimise surface deterioration. Concrete can be delivered to its point of use in a fluid state so there are few limitations on the forms which can be created,...