EMSEAL JOINT SYSTEMS LTD. (Westborough, MA)
An expansion joint system includes an element called a core, and a layer of elastic material that is placed on the core. The core and the elastomer layer that is disposed on top form an elongated section that is elongated and designed to be vertically oriented between substrates that are nearly coplanar. An expansion joint system also includes a termination section at one end. It is located at the elongated portion and comprises an end that is flared, which creates an angle to the section. This section can be used to direct fluid, particles, and solvents away the expansion joint.
Many joints are used in concrete structures and other building systems to allow for movement due to seismic and/or thermal conditions. These joint systems may be positioned to extend through both exterior and interior surfaces (e.g.,walls or floors) and even roofs) of a building or any other structure.
In the event of an exterior joint within the exterior of a wall or floor, roof, and so forth, subject to environmental conditions outside the expansion joint system needs to also resist the effects of the environmental conditions. For vertical joints, such conditions could occur in the form of snow, rain, or ice that is driven by the wind. Horizontal joints are affected by snow, rain or wind.
In particular with regards the bridge expansion joints one of the main causes for structural degradation of piers columns and beams on bridges is leaking and/or deterioration of joints. De-icing salts and atmospheric pollutants that are directed through expansion joints may leak directly onto critical structural elements of bridges. There is a risk of corrosion and spalling can occur, which could lead to the need for costly reconstruction of columns and beams, columns, piers and wing walls.
Additionally, the products for expansion joints don’t fully take into account the peculiarity of certain expansion joints. The expansion joint could contain numerous transition zones throughout its length. They could be parapets, walls, columns, orother obstructions. As such the product of an expansion joint is able to follow the joint when it crosses these obstacles. This is a problem in a lot of products since homogeneous nature is disrupted. Methods of handling thesetransitions include the use of glue, stitching, or welding. It can be hard or even impossible to create these transitions to make expansion joints. The exact details of the expansion joints, as well as the dimensions of any transition may not be known when they are being manufactured.
Furthermore, in a lot of products, the mentioned transitions are weak points in both a water-proofing aspect and a fire-resistant aspect. Both expansion joints and fire resistant expansion joints generally focus on watertightness issues or the fire resistance aspect however, they do not address both. This has often led to the installation of two systems in each expansion joint that require both water resistance and a fire rating. In many instances, however, there simply isn’t enough room within the space that is occupied by the expansion joint to allow for both a fire rated system and a waterproofing system.
Accordingly, there exists a need for improved expansion joint systems, which can not only accommodate thermal and/or seismic movements, but also assist in alleviating and/or preventing deterioration of structural features due to environmentalfactors. These expansion joint systems should also be able to address fire and water resistance.
Embodiments disclosed herein address the above requirements and other requirements.
An expansion joint system is described in one manner. It is comprised of an inner core and a layer containing Elastomer. The core and the layer of elastomer placed on it make up an elongated portion, which is designed to be oriented vertically between coplanar substrates. The expansion joint also includes a terminus section on the other side of the elongated section , with a flared end that forms an angle with the elongated section , and configured to channel particles, fluids and/or solvents away from the expanding joint.
Another aspect of an expansion joint is: A core; and a layer containing an elastomer. The core as well as the elastomer layer disposed thereon make up an elongated portion, the elongated section configured to beoriented horizontally between substantially coplanar substrates. It also has an end part that is configured to incline around a corner, the end portion being vertically aligned. The expansion joint also includes a termination section on the end portion that is designed to angle to the corner. The section of termination consists of an end with a flare that forms an angle to the vertically oriented end part. It is specifically designed to channel fluid, particles, and/or solvent away the expansion jointsystem.
According to another aspect the fire and water resistant expansion joint system includes: a first substrate; and a second substrate that is substantially coplanar with the first substrate and an expansion joint that is situated between the first and second. The expansion joint system includes an open-cell foam that has a fire retardant material infused therein, wherein the proportion of materials that are fire retardant infused into the open-celled foam is within a range of 3.5:1 to approximately 4:1 by weight. Then there is an elastomer-based layer that is positioned on the open foam. The open celled foam and the elastomer layer that is positioned on it forms an elongated portion, with the extended section is designed to be oriented vertically between the first and second substrate. A joint extension system includes a termination section at the other end of the extended section. It is comprised of a flared portion which forms an angle with the lengthened section. This section can be designed to channel particles, fluids, and/or solvent awayfrom the joint of expansion.
Another aspect of a fire- and water-resistant expansion joint is that it has a first substrate; a secondary substrate that is coplanar to the primary substrate and an expansion system which is compressed between the second substrate and initial substrate. The system of expansion comprises open-celled foam with an elastomer that is infused with a fire retardant therein, wherein the ratio of fire retardant material infused into the foam that is open is in a range ofabout 3.5:1 to about 4:1 in weight; and a layer of an elastomer that is positioned on the open foam. The foam that is open as well as the elastomer layer placed on it create an elongated section the elongated section configured to be horizontally oriented between the coplanar substrate of the first and the second substrate and with an end section configured to angle around an angle, with the other end portion being vertically oriented. The expansion joint system further comprises a termination sectionlocated on the vertically oriented section that is angled around the corner, the terminus section having an end that is flared, creating an angle to the vertically-oriented end portion, and designed to direct fluid and/or particles and solvent away from the joint system.
A further aspect of the invention is that a terminus section comprises two components: a core; and an elastomer layer disposed on top of it. The termination portion is designed for an expansion joint system that consists of an elongated section that is designed to be oriented vertically among nearly coplanar substrates. The section that terminates is situated on the other side of the extended section. It comprises a flared section that forms an angle with the elongated sections and is able to direct particles and fluids and solvents away.
According to another aspect, a termination section comprises: a core; and a layer of elastomer that is positioned on the core the latter being designed to be used in an expansion joint system comprising an elongated section configured to beoriented horizontally between substantially coplanar substrates. It also has an end portion that is designed to bend around an angle, with the other end portion being vertically aligned. The termination section should be located near the corner’s top and is characterized by a flared area that is angled with the vertically-oriented end portion. It directs fluids or particles away from the joint system of expansion.
A kit can also contain a termination section that attaches to an expanded portion of the expansion joint. The termination section consists of: a core; and an elastomer layer that is positioned on the core. The end section has a flared end configured to form an angle with a portion of the elongated portion, and also direct particles and fluids and solvents away from expanding joint.
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