Sustainability

As cement generates carbon dioxide during the manufacturing process, good environmental practice should aim to reduce the carbon foot print of airfield pavement construction. This can be done in a number of ways, including:

• Increasing concrete strengths to allow thinner pavements
• Decreasing cement contents in the concrete by good mix design
• Using cement additions, such fly ash (FA), ground granulated blast furnace slag (ggbs) and silica fume
• The use where possible of local natural aggregates to reduce transport of materials
• The use of recycled aggregate and recycled concrete aggregate may also be considered although these materials can have an effect on the performance of the concrete and the construction process, BS 8500(6) gives advice on the use of these materials.