DESCRIPTION

Manhole Restoration(Renewal) is a process for structurally reinforcing and sealing leaky and deteriorated manholes by centrifugal casting a design formulated mortar liner onto the interior walls of existing manhole structures using a non-entry high-speed, rotating device. The renewal process features an ultra high strength, corrosion resistant mortar based on Micro Silica and Portland Cement combined with protection against MIC (Microbiologically Induced Corrosion).1 MORTAR TECHNICAL DATA Compressive Strength ASTM D-695 16,800 psi Flexural Strength ASTM D-790 13,900 psi Tensile Strength ASTM D-638 12,400 psi Hardness ASTM D-2240 68-72 Shore D Impact Resistance NCS-PS55 160 in. lbs Heat Resistance ASTM D-648 220 ¼F Ultimate Elongation ASTM D-638 4.5% Adhesive Shear ASTM C-882 1000psi Mixing Ratio 1:1 Working Pot Life 40 min @ 75¼F Viscosity Same as thick paint-18,000 cps @ 75¼F Dry time 4-6 hours @ 75¼F Recoat 6-24 hours CHARACTERISTICS Coverage 25 sq.ft/gal. @ .065 thickness Number of coats One Color White Finish Glossy Clean up Xylol, Touluol or Lacquer thinner Weight 11.5 lbs./mixed gallon MIC PROTECTION PROPERTIES Unit Weight 125pcf Color Light Gray Special handling None-Keep dry Shelf Life One year Water Demand Water/cement ratio 0.40 Coverage 50#bag yields 0.40 cf Working Time 40 minutes Set Time at 70¼F ASTM C-403 Initial Set 244 minutes Final Set 440 minutes Modulus of Elasticity ASTM C-469 24 hours 180,000 psi 28 days 1,150,000 psi Flexural Strength ASTM C-293 24 hours 650 psi 28 days 800 psi Compressive Strength ASTM C-109 24 hours 3,000 psi 28 days 10,000 psi Tensile Strength 600 psi Shrinkage None Chloride Permeability <550 coulombs 1Specifications and methods for manhole renewal may vary based on manufactures specification.

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Date of last update: December 1 , 2000

© 2000 AFCO Technologies, Inc.