Precompressed water and/or fire resistant tunnel expansion joint systems, and transitions
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.
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; and
a 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/m 3 to about 800 kg/m 3 ;
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 .
2. The fire and water resistant expansion joint system of claim 1 , wherein the coating and the fire and water resistant expansion joint are capable of withstanding exposure to a temperature of about 930° C. at about one hour.
3. The fire and water resistant expansion joint system of claim 1 , wherein the coating and the fire and water resistant expansion joint are capable of withstanding exposure to a temperature of about 1010° C. at about two hours.
4. The fire and water resistant expansion joint system of claim 1 , wherein the coating and the fire and water resistant expansion joint are capable of withstanding exposure to a temperature of about 1260° C. at about eight hours.
5. The expansion joint system of claim 1 , wherein the core comprises a plurality of individual laminations assembled to construct a laminate, one or more of the laminations being infused with at least one of the fire retardant and a water-based acrylic chemistry.
6. The expansion joint system of claim 1 , wherein the core comprises foam.
7. The expansion joint system of claim 1 , wherein the core comprises open celled polyurethane foam.
8. The expansion joint system of claim 1 , wherein a first layer of a water resistant material is disposed on the core, the water resistant material comprising a silicone.
9. The expansion joint system of claim 8 , wherein the water resistant material disposed on the core is selected from the group consisting of polysulfides, acrylics, polyurethanes, poly-epoxides, silyl-terminated polyethers, and combinations of one or more of the foregoing.
10. The expansion joint system of claim 8 , further comprising a second layer disposed on the first layer of the water resistant material, wherein the second layer is selected from the group consisting of another water resistant material, a fire barrier layer and combinations thereof.
11. The expansion joint system of claim 1 , wherein the core is tooled to define at least one of a bellows profile and a bullet profile.
12. The expansion joint system of claim 1 , wherein the ratio of the fire retardant infused into the core is in a range of about 3.5:1 to about 4:1 by weight.
13. The expansion joint system of claim 1 , wherein a layer comprising the fire retardant is sandwiched between the material of the core.
14. The expansion joint system of claim 1 , wherein the fire retardant infused into the core is selected from the group consisting of water-based alumina tri-hydrate, metal oxides, metal hydroxides, aluminum oxides, antimony oxides and hydroxides, iron compounds, ferrocene, molybdenum trioxide, nitrogen-based compounds, phosphorus based compounds, halogen based compounds, halogens, and combinations of the foregoing materials.
15. The expansion joint system of claim 1 , wherein the core uncompressed has a density of about 100 kg/m 3 to about 180 kg/m 3 .
16. The expansion joint system of claim 1 , wherein the coating is applied at the predetermined thickness to achieve a substantially uniform layer on the substrates of the tunnel.
17. The expansion joint system of claim 16 , wherein the fire and water resistant expansion joint is positioned in a gap between the substrates of the tunnel, an edge of the gap is chamfered as the edge abuts the expansion joint and the coating is applied to fill the chamfer.
18. The expansion joint system of claim 1 , wherein the coating is applied at the predetermined thickness to achieve a substantially uniform layer on the substrates of the tunnel to a predetermined distance away from a gap between the substrates, and at a second predetermined thickness from the predetermined distance until an edge of the gap.
19. The expansion joint system of claim 18 , wherein the coating is applied in an increasingly tapered manner from the predetermined thickness at the predetermined distance away from the gap until reaching the second predetermined thickness at the edge of the gap.
20. 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; and
a 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/m 3 to about 800 kg/m 3 ; and
wherein the fire retardant infused core is configured to pass testing mandated by UL 2079.