Visit our website:
Call: (936) 321-3333

Monday, March 30, 2020

Powercrete Installation Procedure

General Powercrete Installation Procedure

     Here is a very general guideline of the things we cover when training crews; or training trainers with regard to field applying Powercrete J, Powercrete R65/F1 or Powercrete R95 as a hand applied ARO or field joint coating. 

  1. Preheat the pipe to 120 to 125 F prior to blasting
  2. Blast the pipe with suggested grit size
  3. Verify that proper anchor pattern has been achieved
  4. Re-preheat if necessary to bring pipe surface up above the dew point (or higher if you are wanting to cure faster)
  5. Make sure steel and adjacent coating are free of oil, dirt, dust, etc
  6. Mix the Powercrete - normally pouring the B into the A
  7. Using either a drill or doing it manually, mix the epoxy thoroughly without introducing air into the mixture
  8. Mix epoxy until it begins to have a glossy look (typically 3-5 minutes by hand).
  9. Pour a bit of the mixed epoxy back into the B container and coat the inside in order to use up all hazardous material in the B container.
  10. Pot life will vary significantly based on ambient weather conditions.  The hotter it is, the quicker things cure.  Generally speaking you might have:
    1. ~18 minutes for Powercrete J
    2. ~8 minutes for Powercrete R65/F1
    3. ~15 minutes for Powercrete R95
  11. Apply 1st thin coat and let that coat sit until it is tacky
  12. Apply next coat, beginning to build coating thickness as needed
  13. Monitor the pipe for potential drips until the epoxy has begun to gel and get tacky.

Friday, March 27, 2020

Powercrete Outer Wrap Applications

Powercrete Powershield-XT Outer Wrap Applications

     A few examples of applications which may be perfect for Powercrete Powershield-XT:

  • Soil to air transition of pipelines:  rigid mechanical protection of corrosion preventing coating systems on risers against soil shear, mechanical impact and indentations.
  • Field Applied Coatings:  Rigid mechanical protection of corrosion preventing coating systems on pipeline girth welds against soil shear, abrasion, mechanical impact and indentations such as an aggressive backfill and directional drilling operations.
  • Pipe Saddles:  Mechanical protection of your corrosion prevention system on pipe saddles is improved dramatically when wrapped with Powershield
  • Pipe and Fittings:  Add extra physical protection to abnormally shaped objects like bends, tees, valves and flanges for added protection against soil shear, abrasion and impacts. 

Thursday, March 26, 2020

Powershield XT Glass Fiber Outer Wrap - Powercrete

Powercrete Powershield XT

Glass Fiber Outer Wrap

Powercrete Powershield
Powershield XT being installed over Powercrete R65/F1
     Powercrete Powershield XT is a woven, bi-axial glass outer wrap.  Powershield is pre-impregnated with a solvent free moisture curing polyurethane resin.  Powershield XT is used as a rigid mechanical abrasion and impact resistant layer over pipeline steel surfaces.  Powershield XT does not act as a corrosion resistant or prevention coating; it acts as an added physical protection for those corrosion prevention coatings.
     Powershield XT can be applied in various thicknesses depending on the mechanical resistance desired according to engineers specifications.  It is supplied in rolls in 4", 6" and 8" widths.  

     When the Powershield XT has cured in place (it cures after exposure to water) it forms a hard shell with a smooth surface which is highly resistant to mechanical damage, chemicals, weather and soil stresses.  If used above ground, a UV reflective top coat is recommended to avoid discoloration. 

Features of the Powershield XT: 
  • Excellent abrasion, impact and indentation resistance
  • Wide temperature range during application and while in service
  • High performance in many, many environments
  • Cures quickly and completely
  • No field mixing required - only water
Call or email Joint Specialists today for pricing and delivery information!