Buried-type expansion joint "PA Joint"

No secondary water stop needed - seismic performance achieved! Buried expansion device boasting high durability.

The "PA Joint" is a buried expansion device that does not require secondary water stopping, featuring seismic resistance due to its ability to expand and contract in all directions by 360 degrees. It does not experience the fluidity and cracking typical of buried joints, and it is robust with high durability (over 15 years). It performs better against temperature fluctuations and can accommodate a maximum expansion of up to 100mm. This significantly improves the durability issues associated with conventional buried joints, suppresses the occurrence of subsidence and cracking due to fluidity, and ensures the safety of passing vehicles. 【Features】 ■ High durability ■ Zero displacement after over 63,000 rotations in wheel tracking tests ■ Average wear of 0.05mm in labeling test results (Japan Road Construction Association) ■ Can be constructed with the same material for the ground cover, allowing for seamless water stopping ■ Exhibits the same expansion and contraction performance in all 360 degrees *For more details, please refer to the PDF materials or feel free to contact us.

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