AASHTO MP 34-18 (2020) PDF Download

AASHTO MP 34-18 (2020) is a standard that outlines the specifications for materials used in sand seals. Sand seals are a type of surface treatment for bituminous streets that involve the application of emulsified asphalt, followed by a layer of fine graded cover aggregate.

The standard specifies the quality requirements for both the aggregate and emulsified asphalt used in sand seals. It ensures that the materials meet certain standards and properties to ensure the effectiveness and durability of the sand seal.

The application of the sand seal may involve multiple lifts, depending on the traffic demands and the condition of the existing road surface. This standard provides guidelines for the proper preparation and application of the sand seal to ensure its long-term performance.