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Projects: Case Studies

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Location: Beijing, China
Owner: Beijing Municipal Commission of City Administration
Contractor: Beijing Municipal Commission of City Administration

Beijing Subway

Beijing, China

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  • Tunnels
  • Beijing Subway

Background

The 27.7 km (17 mile) Beijing subway tunnel travels underground, from Songjiazhuang, in south Beijing, to Beitaipingzhuang in the north. The route lightens traffic on the city’s north-south axis along the third ring road.

Many cracks in the finished concrete tunnels were actively leaking water and it was feared that the reinforcing steel, tracks, guide cables and equipment were susceptible to deterioration from the moisture.

Solution

In 1999, Kryton was contracted to provide the materials to repair cracks and to waterproof existing concrete in the underground tunnels. 16 tons of Kryton materials including Krystol T1, Krystol  Bari-cote and Krystol Plug were supplied to waterproof and repair the cracked concrete. To date the materials are working as specified.


Products and Systems Used:

Krystol T1® Concrete Waterproofing

Krystol Leak Repair System

Krystol T1 is a surface applied crystalline slurry treatment that transforms new or existing concrete into a permanent waterproofing barrier.

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Krystol Bari-Cote™

Krystol Bari-Cote is a high-strength crystalline concrete waterproofing top coat used to resurface and repair concrete or masonry.

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Krystol Plug™

Krystol Leak Repair System

As part of the Krystol Leak Repair System, Krystol Plug is a rapid-setting hydraulic cement product that when mixed with water is used to stop flowing water and repair leaking cracks, holes and joints in concrete.

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