Waterstops are static seals installed between joints of a concrete structures to stop the passage water or any other fluids. The waterstop is baked into the concrete or across and/or over the joint. To be able to select the best waterstop for that application there are many items to consider. Included in this are, the structure type, joint type, joint movement type, chemical containment requirements, and the way of securing the waterstop in place (hog rings, grommets, etc.)

Concrete waterstops rose to prominence as concrete use became the standard choice in residential and commercial construction within the mid-20th century. After concrete bridges started dotting the map in the early 1900s and the Hoover and Grand Coulee dams were constructed from concrete within the 1930s, it took hold since the most used material in new construction. Because of the porous joints created when dispensing concrete in sections, the requirement for waterstops was immediately apparent. PVC was the predominant selection for waterstops from the 1940s and continued for years which is still the most common waterstop material.

Features

Waterstops utilize techniques during installation that force seals to embed to the concrete. In most applications, it is necessary to repel water and liquids entirely. Special circumstances require the prevention of liquids from moving after dark barrier produced by the waterstop. This feature is associated with being forced to keep solvents, hot petroleum oils and chemicals from making its well beyond the seal itself. Capabilities include alternative physical forms for example strips. A strip can do covering a massive area when purchased in large rolls or pastes.

Applications

Waterstops are necessary for construction projects where concrete can be used to retain water or exclude it. These kind of applications in residential, industrial and commercial construction include:

Dams and water reservoirs

Canals, locks, aqueducts and culverts

Bridges and tunnels

Water and wastewater treatment facilities

Sludge ponds

Containment structures surrounding oil, chemical as well as other kinds of refineries

Storage tanks, both above and underground, for liquids like fuel or chemicals

Basements and concrete foundations for houses along with other buildings

Specifications

Specifications are manufactured obtainable in the next four areas:

Structure type

Joint type application

Joint movement requirements

Chemical containment requirements

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