Project Description. Prior to surface preparation all surfaces were evaluated based on the following field tests:

• Tensile Strength (ATSM D4541-85)

• Moisture Content (ATSM D4263-88)

• Surface Temperature

• Chloride and Sulfate Ion Contamination

Surface preparation included mechanical methods (blastracking and scarifying) to remove weak concrete, surface laitance.

Immediately after surface preparation surfaces received a coat of penetrating Primer/Sealer.

Vertical repairs to fill surface imperfections, cased by air entrainment during concrete pour and opened up by abrasive blasting, were completed utilizing a Corrosion Control Epoxy-based Scratch Coat System.

Epoxy Motar trowel applied to all surface imperfections less 3".

The following surfaces receieved corrosion barriers based on the Manufacturer recommendations:

• Drum Storage Area - Techni-Plus EN 25.5 Broadcast System (80 mils D.F.T.)

• Sumps and Trenches - 60 mils D.F.T.

• Drain Deck and Tank Pedestals - 60 mils D.F.T.

• Chemical Storage Area - 40 mils D.F.T.

• Waste Treatment Area - 40 mils D.F.T.

Work Performed:

Concrete: floors, sumps, trenches, piers- surface preparation. Priming with Epoxy based, Conductive Primer

Installation of: crack bridging, chemical and abrasion resistant Lining and Coatings
High Voltage Sparktest

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