Which of the following statements is true about moisture content in asphalt plant operations?

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Multiple Choice

Which of the following statements is true about moisture content in asphalt plant operations?

Moisture on the aggregate changes how much binder ends up in the finished mix. When aggregate contains water, some of the binder has to coat and then heat away the moisture, so there’s less binder available to properly coat and bind the aggregate at a given binder flow. To keep the final asphalt content on target, drum mix plants adjust the binder quantity based on the measured moisture in the aggregate (including RAP). If moisture isn’t accounted for, the mixture can end up with too little binder and performance issues, or with improper coating and compaction. Since moisture affects all aggregate going into the plant and directly influences how much binder is needed, this statement is the correct one.

Moisture on the aggregate changes how much binder ends up in the finished mix. When aggregate contains water, some of the binder has to coat and then heat away the moisture, so there’s less binder available to properly coat and bind the aggregate at a given binder flow. To keep the final asphalt content on target, drum mix plants adjust the binder quantity based on the measured moisture in the aggregate (including RAP). If moisture isn’t accounted for, the mixture can end up with too little binder and performance issues, or with improper coating and compaction. Since moisture affects all aggregate going into the plant and directly influences how much binder is needed, this statement is the correct one.

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