TABLE OF CONTENTS The following notation is used in this chapter:
| Symbol | Definition |
|---|---|
| A, M d | Mass of aggregates in a dry state |
| B, M b | Mass of aggregates in an SSD state |
| C | Mass of aggregates when submerged in water |
| G b | Bulk specific gravity |
| k | Correction factor for temperature |
| M c | Mass of empty container |
| M dc | Mass of container plus dry aggregates or oversize particles |
| M s | Mass of dry aggregates or dry oversize particles |
| M n | Mass of oversize particles in their natural state |
| M w | Mass of absorbed water within aggregates or oversize particles |
| M wc | Mass of container plus aggregates that have internal moisture |
| V b | Volume of aggregates or oversize particles |
| w | Internal moisture content of oversize particles |
| ? b | Bulk density of aggregates or oversize particles |
| ? w | Density of water |
Aggregates are defined as granular materials used either in combination with cementing materials or alone. Aggregates are combined with portland cement to make concrete, and they are combined with asphalt to make asphalt concrete. Aggregates are used alone for road bases, backfill material, or as a capillary break below foundations. Table 14.1 presents a list of the common uses of aggregates.
| Major division | Types | Discussion |
|---|---|---|
| Aggregates used with cementing materials | Concrete | In a typical concrete mixture, aggregates make up about 75 percent by weight of the mix. Concrete usually contains both coarse and fine aggregates. |
| Asphalt concrete | In a typical asphalt concrete mixture,... |
