ASTM International Standard Specification for Transportation Tunnel Structural Components and Passive Fire Protection Systems ASTM E3134-20(2024)

This specification describes an approach for testing the fire resistance of concrete tunnel linings, fire-resistive materials, and structural tunnel members. It requires testing of both horizontal and vertical orientations and is limited to concrete mix design and fire-resistive materials, as well as the potential impact of environmental exposures (optional). A minimum of one fire test is required for each assembly, configuration, and orientation. For cases where the concrete mix design is intended to address the fire load independent of fire-resistive materials, the Spalling Test is applicable. For cases where standard or general concrete design mix is intended and protected by fire-resistive materials, the Fire-Resistive Material Test is applicable. For cases where both the concrete design mix and fire-resistive materials are combined to address the fire load, both test criteria are applicable but can be accomplished with one fire test for each assembly, configuration, and orientation. The test methods covered by this specification are used to determine the performance of tunnel construction elements with respect to exposure to a standard time-temperature fire test. The tests include surface burning test, environmental tests (optional: ground water test, road salt test, tunnel interior surface washing, spalling test, fire-resistive material test), and fire-resistive joint test.