Prestressed pipe pressure slurry construction points

Prestressed pipe pressure slurry of the prestressed pipe pressure pulp price of post-tensioned prestressed pipe pressure pulp manufacturer of prefabricated, shall not be in place before the hole grouting; After grouting, shall, in accordance with the provisions of grout strength to achieve the strength of the rear can be removed and hoisting. Prestressed pipe pressure slurry construction record should be filled in. Record program should include: the grouting materials, mixture ratio, grouting period, righteousness and mixing time, the initial fluidity machine, slurry temperature, environment temperature, voltage stabilizing pressure and time, the vacuum aided grouting process should include vacuum fashion. Prestressed pipe pressure slurry unbond prestressed unbond prestressed materials shall comply with the following provisions adopted by the unbond prestressed concrete performance and quality should be consistent with the current industry standard for the unbonded prestressed steel lines) （ JG161） The provisions of the; Making unbond prestressed steel ridge, its quality should be consistent with existing national standards ( Concrete with steel roof stress lines ( CB／T5224） The provisions of the. Unbond prestressed concrete sheath should be crowded group type high density polyethylene pipe, the performance and quality should be consistent with existing national standards ( Polyethylene ( PE） Resin) / T1115) The provisions of the. Sheath surface should be smooth, no crack, sink, visible steel ridge contour, defects such as porosity and mechanical injury. Anticorrosive grease in accordance with the current industry standard of the unbonded prestressed special anti shang grease '( C3007） The provisions of the.