Precompressed water and/or fire resistant tunnel expansion joint systems, and transitions

摘要

A fire and/or water resistant expansion joint system for installation between substrates of a tunnel. The system includes a coating applied at a predetermined thickness to the substrates and a fire and water resistant expansion joint. The expansion joint includes a core and a fire retardant infused into the core. The core is configured to define a profile to facilitate the compression of the expansion joint system when installed between the substrates. The coating and the fire and water resistant expansion joint are each capable of withstanding exposure to a temperature of at least about 540° C. or greater for about five minutes.

主权项

1. A fire and water resistant expansion joint system, comprising:
a coating applied at a predetermined thickness to substrates of a tunnel; and a fire and water resistant expansion joint including:
a core; anda fire retardant infused into the core, the core configured to facilitate the compression of the expansion joint system when installed between the substrates; wherein the fire retardant infused core compressed has a density of about 160 kg/m3 to about 800 kg/m3; wherein the coating and the fire and water resistant expansion joint are capable of withstanding exposure to a temperature of about 540° C. at about five minutes, and the fire retardant infused core is configured to pass testing mandated by UL 2079.