1. Rigid Foam Anelise Williamson MEEN 3344 11-1-04

2. Prime Flex 985 Urethane Resin Lightweight, rigid foam Two components

3. Common Uses: Slab stabilization from beneath Filling of Voids in wet areas Closing up abandoned pipelines or storage tanks.

4. 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

5. Physical Properties at room temperature Mixing Ratio is (1:1) Viscosity is 300-450 cps It takes about 8 minutes to set Expands at a ratio of 20:1 A final strength 90 psi (ASTM D-1621)

6. 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.

7. References Prime Resins, Inc.