Handling and Storing Aggregates

Aggregates for batching of concrete are normally stored outdoors in stockpiles. Some of the factors that should be considered when planning for these stockpiles are:

1. Stockpiles should be built in thin layers of uniform thickness to minimise segregation.

2. Stockpiling equipment should not be allowed to go over aggregates to avoid aggregates being crushed which will result in change in gradation or contamination.

3. Stockpiles should be separated from other materials to avoid contamination and to maintain integrity and gradation of aggregates. Partitions separating aggregates should be high enough to prevent intermixing.

4. Washed aggregates should be stockpiled in sufficient time before use so that they can drain to uniform moisture content.

5. Exposure to extreme hot weather should be taken care of through misting

6. Aggregates placed directly on the ground shall not be removed from stockpiles within 300mm of the ground.

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