Building expansion and separation joint

Static structures (e.g. – buildings) – With synthetic resinous component – Foam

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Details

52311, 52396, 52403, 428160, 4283199, E04B 168

Patent

active

047365587

ABSTRACT:
An expansion, or seismic joint, is provided of polyurethane/polyester sponge rubber having a series of parallel grooves in its front face and a single vee shaped groove in its rear face. The grooves in the front face include an elastomeric membrane of cured one-component polyurethane liquid rubber and a cured capping layer of aliphatic two-component urethane liquid rubber. The capping layer may be colored or if the capping layer is not used the elastomeric membrane may include an aggregate or sand coating. The capping layer may be colored.

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