Experimental and numerical research programme for the design and optimization of various aspects of concrete behaviour

Concrete is the most widely applied construction material. The freedom of form as well as the relatively low cost of the material are among the most important reasons to select it as a construction material. The low cost argument is valid only if durability of the material is warranted over a longer time span, without need for excessive repairs. Often only the costs needed for construction are considered, and future expenses for maintenance and repair are neglected. Since this is the current state of affairs, it seems important to explore the limits of the material under various conditions and to investigate whether it is possible to extend lifetimes over current limits. 'Better', 'stronger', 'more durable' and a 'better understanding' of the family of materials called concrete are the key-words in the research programme that was initiated in 1997, and which now gradually start to come to the point where new results and insight are obtained. The programme is extensive in the sense that many aspects of concrete material behaviour are explored, i.e. from basic properties of cement and hydration processes to high strength concrete, and from more simple manufacturing methods to improved durability. The programme is a unique meeting place where several researchers from different fields of expertise interact, as will be explained in Section 2. Emphasis is on fundamental understanding, culminating in new practical applicable methods and materials.