Q: I need impervious geosynthetics for pipe wrapping that will be placed within heavy clay. Do you have any suggestions?
A: One wraps nonpolymeric pipes for many reasons. Below are some examples:
- Insulation (sound and thermal)
- Corrosion protection
- Impact resistance
Most wraps are tapes or mastics. Polyvinyl chloride (PVC), butyl rubber and bituminous wraps are common. A large part of this industry is covered by W. R. Grace and Co.’s Bituthene. It is a hybrid product with a formulation that has evolved over the last 20 years and is good at covering a wide variety of applications.