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The Mar-Flex Crack Injection
System is a two-part liquid polyurethane injection resin designed to
permanently seal leaks in concrete structures. When placed in contact with
water, the liquid polyurethane resin expands to form a tough, flexible foam
seal that can not be penetrated by water. |
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| This system is
proven successful in repairs on the following: |
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 Expansion
Joints
- Swimming Pools
- Foundation Cracks
- Basement Walls
- Cold Joints
- Unshielded Electric Conduit
- Subway/Highway Tunnels
- Concrete Dams
- Below Grade Parking Decks
- Manhole Covers
- Elevator Shafts and Service Pits
- Water Holding Tanks
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- Repairs made from inside of structure
- No costly outside excavation needed
- Repairs made to wet or dry surfaces
- Expands up to 400% for tight seals
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Properties
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Crack Injection System |
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Color |
Amber |
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Tensile Strength |
(ASTM D-1623) 31 p.s.i. |
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Elongation |
(ASTM D-1623) 45% |
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Shrinkage |
(ASTM D-2126) 0-3% |
Water Absorption
(Volume Confined) |
(ASTM D-2127) <1 |
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Shear Strength |
(ASTM C-273)34 p.s.i. |
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Viscosity |
300 cps |
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Pot Life |
Approx. 5 hrs. |
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(providing no moisture is present) |
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Cream Time |
3 seconds to 30 seconds |
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(Reaction time after meeting
water) |
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Yield |
2-20 times expansion |
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