Abstract
This guide presents information on selection and use of normal- weight and heavyweight aggregates in concrete. The selection and use of aggregates in concrete should be based on technical criteria as well as economic considerations and knowledge of types of aggregates generally available in the area of construction. The properties of aggregates and their processing and handling influ- ence the properties of both fresh and hardened concrete. The effec- tiveness of processing, stockpiling, and aggregate qualitFy control procedures will affect batch-to-batch and day-to-day variation in the properties of concrete. Aggregates that do not comply with the specification requirements may be suitable for use if the proper- ties of the concrete using these aggregates are acceptable, as per Chapter 6. Materials that can be recycled or produced from waste products are potential sources of concrete aggregates; however, special evaluation may be necessary.