# US 2014/0360118 A1 · Factory fabricated precompressed water and/or fire resistant tunnel expansion joint systems, and transitions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360118 A1 - Document ID: US20140360118A1 - Status: Published application - Kind: A1 - Application number: 14/229,463 - Filed: 2014-03-28 - Published: 2014-12-11 - Earliest claimed: 2012-12-28 - Assignees: Emseal Joint Systems Ltd. - Inventors: Lester Hensley; William Witherspoon - Web page: https://patentgrep.com/patent/US20140360118A1 ## CPC - E04B 1/948: {Fire-proof sealings or joints (for doors or windows E06B5/164)} - E04B 1/6815: {Expansion elements specially adapted for wall or ceiling parts} - E21D 11/385: {Sealing means positioned between adjacent lining members (for joints in foundation structures E02D29/16; for sewers E03F3/04; for building structures in general E04B1/68)} - E02D 29/045: Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them - E04B 1/6812: {Compressable seals of solid form} - E04B 2001/6818: {Joints with swellable parts} - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) - E21D: SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K17/00; drilling or cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F) - E02D: FOUNDATIONS; EXCAVATIONS; EMBANKMENTS (specially adapted for hydraulic engineering E02B); UNDERGROUND OR UNDERWATER STRUCTURES {(tunnels, tunnelling, mining E21)} ## Abstract 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. ## Claims ### Claim 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 define a profile to facilitate the compression of the expansion joint system when installed between the substrates; wherein the coating and the fire and water resistant expansion joint are capable of withstanding exposure to a temperature of about 540° C. or greater for about five minutes. ### Claim 2 (depends on 1) 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. or greater for about one hour. ### Claim 3 (depends on 1) 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. or greater for about two hours. ### Claim 4 (depends on 1) 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. or greater for about eight hours. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 1) The expansion joint system of claim 1, wherein the core comprises foam. ### Claim 7 (depends on 1) The expansion joint system of claim 1, wherein the core comprises open celled polyurethane foam. ### Claim 8 (depends on 1) The expansion joint system of claim 1, wherein a first layer of elastomer is disposed on the core, the elastomer comprising a silicone. ### Claim 9 (depends on 8) The expansion joint system of claim 8, wherein the elastomer 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. ### Claim 10 (depends on 8) The expansion joint system of claim 8, further comprising a second layer disposed on the first layer of the elastomer, wherein the second layer is selected from the group consisting of another elastomer, a fire barrier layer and combinations thereof. ### Claim 11 (depends on 1) 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. ### Claim 12 (depends on 1) 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. ### Claim 13 (depends on 1) The expansion joint system of claim 1, wherein a layer comprising the fire retardant is sandwiched between the material of the core. ### Claim 14 (depends on 1) 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. ### Claim 15 (depends on 1) The expansion joint system of claim 1, wherein the core uncompressed has a density of about 100 kg/m3 to about 180 kg/m3. ### Claim 16 (depends on 1) 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. ### Claim 17 (depends on 16) 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. ### Claim 18 (depends on 1) 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. ### Claim 19 (depends on 18) 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.