Single Strip seal elastomeric joint (Movement up to 80mm). Single strip expansion joint consist of two edge beams with anchorages and with elastomeric sealing element held firmly in the housing of edge beams that guarantee the water tightness the joint. The maximum gap between the edge beams at the road surface when the joint fully opens due to maximum contractions of the deck shall be limited to 80mm for comfortable passage of traffic. The edge beams protects the adjacent bridge deck concrete from damage due to vehicular impact and also transfer the vehicular loads to the deck structures through robust anchorage system. Typical single strip seal joint is shown in the figure below.
This type of joint consists of reinforced elastomeric pads connected to a supporting steel structure which itself is cast into the concrete structure of the bridge. The joint accommodates movements by width. Typical reinforced elastomeric joint is shown in the figure below.
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