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The Madushan dam is located on the Red River in Yunnan Province; it provides electricity to hundreds of thousands of people.
When cracks in the dam’s concrete walls began to surface due to the immense hydrostatic pressure, the structure’s owners knew they were up against a massive challenge. The dam needed to remain in service, making planning and co-ordination difficult for trades. In addition, the owner had concerns that traditional membrane waterproofing and polyurethane coating systems wouldn’t be effective or easy to use due to inclement weather on-site.
The owner was also already moving forward on an expansion project on the dam, building additional infrastructure and increasing its overall capacity. It would be a busy site, and repair work needed to happen as quickly, efficiently and effectively as possible.
The construction team chose Hangzhou Guo Dian Dam Safety Engineering Co, Kryton’s distributor in China, to provide Krystol T1 & T2 Waterproofing System– a surface-applied crystalline slurry coat system – as well as Krystol Waterstop Grout for the joints and cracks.
Kryton products were selected because the repair team recognized the Kryton Waterproofing System would not only fix the cracks, but would increase the resistance of chloride penetration into the concrete and improve the structure’s overall durability.
A total of 12,000 square meters (130,000 square feet) of concrete were treated with approximately 40,000 kilograms (40 tons) of Kryton’s T1 & T2 Waterproofing System.
Krystol T1 is a surface applied crystalline slurry treatment that transforms new or existing concrete into a permanent waterproofing barrier.
Krystol Waterstop Grout is a crystalline grout used to create an internal or external waterstop at construction joints, pipe penetrations, tie-holes and control joints.
