Products Used: Tufflon-P80, Wetproof
The asset owner approached the LiquiMix team seeking a secondary containment system for sealing several large bunds containing 50% Caustic Soda solution stored in mild steel tanks. The substrate in the bunds was Roadbase. The lining system had to conform to the complex shapes within the bunds and bund walls; it had to be applied in a timely manner; and it had to be tough enough to withstand pedestrian and vehicle traffic in certain areas. Due to unusually high movement in the sub-ground areas, the lining system also had to be flexible enough to move and stretch without cracking or tearing.
LiquiMix chemists initiated immersion testing in a 50% Caustic Soda solution of several grades of polyurea. Tufflon-P80 soon showed it had superior resistance and, coupled with some other unique physical properties, was nominated as the lining material of choice. LiquiMix tested the system on a small section of the bund where it would be subjected to heavy vehicle traffic. One month later, after extensive testing, the system remained intact and unchanged.
The specified secondary containment lining system provided an expected service life of 20 years, and the solution worked efficiently and effectively and is still performing at a high quality level. The general recommendations for future projects are to use TufflonP80’s superbly tough and elastomeric, abrasionresistant characteristics to line bunds for Caustic cargos and other chemicals in the mining industry.
Tufflon-P80 is a two-component, spray-applied, pure-polyurea elastomer coating that is softer than both Tufflon-P90 and Tufflon-D60 and exhibits less shrinkage and faster development of full strength. This faster development of physical properties...
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Wetproof is a single-component, water-based, polyurethane-modified, waterproofing membrane. Wetproof has high elasticity, durability and flexibility. Wetproof passes all of the requirements of AS/NZS 4858:2004 Class III for Interior Waterproofing.
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