Rigid Foam

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Rigid Foam

• Anelise Williamson
• MEEN 3344
• 11-1-04

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Prime Flex 985

• Urethane Resin
• Lightweight, rigid foam
• Two components

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Common Uses

• Slab stabilization from beneath
• Filling of Voids in wet areas
• Closing up abandoned pipelines or storage tanks.

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Benefits of this Material

• A relatively fast setting time
• Very low viscosity
• Can be used in wet situations (retaining wall)
• It will bond with the sub soils

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Physical Properties at room temperature

• Mixing Ratio is (11)
• Viscosity is 300-450 cps
• It takes about 8 minutes to set
• Expands at a ratio of 201
• A final strength 90 psi (ASTM D-1621)

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Installation

• Requires open paths for pressure release
• This can be minimize by injecting in small shots.
• The foam will begin to expand in under a minute.

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References

• Prime Resins, Inc.