Aqua-Wrap

The wet lay-up systems most commonly used in the industry are Aqua-Wrap, Armor Plate wrap, BlackDiamond wrap and StrongBack systems. 

Aqua-Wrap (California, US) is manufactured commercially in compliance with the US Department of Transportation (DOT). Aqua-Wrap (see Fig. 18.10) uses water-activated polyurethane resin, which cures in wet conditions and under water. Thus, it can be applied and fully cured in water. 

Advanced Waterproof Technologies (2005) AqauWrap pipeline repair (online). Available at http //ridwater.com/aqua-wrap.htm, retrieved October 2011. 

For a number of years the following desiccator method of corrosive tests was used at MPRI NASH [49-51,98]. Metallic samples in the form of plates 50 X 50 X 2 in size are wrapped in an inhibited film and placed into the desiccator inside which 98 2% relative air humidity is maintained by aqua solution of glycerin, and are subjected to cyclic heating-cooling. One cycle consists of the endurance of the samples in the same humidity at a temperature of 55 2°C for 8h and at a similar humidity and a temperature of 20 2°C for 16 h. The protective ability of the films is estimated by the corrosion resistance of metallic samples after 21 test cycles (Table 1.11). 

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