JEA Demo SewperCoat

Manhole Rehabilitation

July 2010

Chaz Environmental Services, Inc.

Why SewperCoat?

• Rehabilitate existing infrastructure damaged by abrasion and or biogenic corrosion

• Looking for a structural fix or enhancement

• In need of a product that infiltration will not “get behind”

Why SewperCoat?• Desire to protect the structure with a product

with a world wide 70+ year track record

• Added security of a 10 yr warranty

Before After

JEA DEMO Manhole

Effects of biogenic corrosion and infiltration Missing bench and invert

infiltrationCorrosion Missing bench

Missing invert

SewperCoat Process

• We clean the structures

• We patch walls/stop leaks

• We’ll rebuild bench/invert

• We work with flow or pump around/divert

JEA Manhole

Cleaned and repaired manhole prior to

application of rust Inhibitor on exposed

rusted metal

Same area after rust inhibitor was applied

SewperCoat Process

• We low pressure spray apply SewperCoat PG (pumpable grade), a pre-packaged ready to use high strength wet shotcrete material composed entirely of calcium aluminates

SewperCoat Process

• Once the desired thickness is spray applied (1/2” to 4” depending upon needs of individual structures), we hand trowel the surface

SewperCoat Process

• Then we brush the entire interior- walls, chimney and bench

JEA DEMO Manhole finished