Tun Razak Exchange
A 28 ha development, the Tun Razak Exchange (TRX), also known as the Kuala Lumpur International Financial District, is located at the heart of Kuala Lumpur for the purpose of international finance and business. Consisting of 26 buildings and over 2 million m2 of gross floor area, TRX buildings include office, residential, hotel, retail, and cultural offerings as well as multiple vehicular tunnels and two light rail tunnels. This project also forms part of the government’s Economic Transformation Program.
The karst land surrounding the TRX development meant that waterproofing of the below grade structures was critical. Xypex Admix C-1000 NF was chosen to waterproof the concrete used in the vehicular tunnel slab, drainage sump pit, and the basement car park. 130,000 m3 of concrete were mixed with Xypex Admix C-1000 NF.
Prior to using Xypex Admix C-1000 NF on TRX’s structures, the compressive strength of trial mixes was tested. After 30 days, the concrete cubes containing Xypex Admix C-1000 NF measured 61.83 MPa compared to the control cubes 57.16 MPa, an 8% increase in strength.
Because of Xypex’s unique crystalline technology, capillaries and pores in the concrete are sealed by the non-soluble crystalline structure preventing leaking under high hydrostatic pressure, protecting the concrete and increasing the durability of the structures.
With workforce and space constraints in the tunnel construction, Admix C-1000 NF was able to save time and manpower as it is simply added to the concrete mix during batching.
Additionally, since Xypex Admix C-1000 NF is integrated permanently within the concrete, the crystalline technology will remain active to heal hairline cracks throughout the service life of the structure, requiring no future maintenance.