ASTM E1993/E1993M-98 (R2020) PDF Download

ASTM E1993/E1993M-98 (R2020) is a standard specification that outlines the properties and tests for bituminous water vapor retarders used in contact with soil or granular fill under concrete slabs. This specification applies to both new materials and materials that have been conditioned or exposed to simulate service conditions.

The water vapor retarders described in this standard consist of asphaltic materials reinforced with multiple plies of suitable fabric. The retarders must meet certain property requirements when tested, including water vapor permeance, tensile strength, puncture resistance, and thickness.

In addition to these general requirements, there are also specific properties that may be required by the buyer for use in special conditions. These include resistance to plastic flow and elevated temperatures, resistance to low temperature bending, resistance to deterioration from petroleum vehicle for soil poisons, and resistance to deterioration from exposure to ultraviolet light.