Standard Specification for Water Vapor Retarders Used in Contact with Soil or Granular Fill under Concrete Slabs
1.1 This specification covers flexible, preformed sheet membrane materials to be used as vapor retarders in contact with soil or granular fill under concrete slabs.
1.1.1 A task group in Subcommittee E06.21 is working on a specification for bituminous vapor retarders.
1.2 The specified tests are conducted on new materials and materials that have been conditioned or exposed to simulate potential service conditions.
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