DMRC awarded the DC-06 project of the 65.1 km Delhi Metro Phase 4 expansion to the Hindustan Construction Company–Vensar Constructions Company (HCC–VCCL) joint venture in 2020. HCC-VCCL carried out the construction of twin tunnels from the Vikaspuri Park Shaft to the Vikaspuri Ramp near Keshopur Station, and a new underground station at Krishna Park Extension, extending the Magenta Line (Line 8).
PENETRON ADMIX was used to treat 51,000 m3 (66,700 yds3) of concrete mix for the tunnel walls and roof, as well as the foundation slab and walls of the new underground station. PENEBAR SW-45, swellable waterstop strips, were used to seal the resulting construction joints of the base and roof slab. PENETRON, a cementitious integral crystalline waterproofing slurry, was applied to 3,800 m2 (41,800 ft2) of the Krishna Park Extension underground station roof slab. Once applied, the active ingredients in Penetron's crystalline products create a non-soluble crystalline formation throughout the pores and capillary tracts of the concrete to optimize waterproofing protection.
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