H - 60 prestressed pipe pressure slurry in vitro prestress tensioning have what effect
2020-12-04
Kastar
112
For prestressed concrete prestress, appropriate for more than one jack tensioning of synchronicity, holding time, fault under the effective prestress and its uniformity of quality control, and shall meet the following requirements 1 on both ends of using more than two jacks symmetry and tensioning, the synchronous tension between jack allows appropriate for 2%.
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