Laboratory Investigation of Hydrated Lime as an Antistripping Additive

摘要

The purpose of this laboratory study was to determine the effectiveness of hydrated lime as an antistripping additive when used in bituminous mixes incorporating aggregates frequently used in such mixes in Virginia. The application of 1% hydrated lime to dry aggregate deterred stripping in 60% of the mixes tested. Applied at the same rate to wet aggregate, the hydrated lime decreased the stripping susceptibility to or very near an acceptable level for all but one mix. An aggregate dust coating reduced the effectiveness of the lime in one mix. It has been recommended that the use of hydrated lime as an antistripping additive be allowed.