Preprufe® keeps Doha Metro system on track

Preprufe® keeps Doha Metro system on track

At the new multi-billion dollar Doha Metro system in Qatar’s capital city, more than 1,000,000m2 of Grace Construction Products’ Preprufe Plus is being installed to provide long term protection against ground water, an average annual temperature of 32°C and chloride and sulphate attack.

The Doha Metro will consist of four and approximately 100 stations when complete. To be built in two phases, Phase 1 includes the construction of two major stations at Msheireb and Education City and 30 other stations by 2019, with the second phase delivering over 50 stations by 2026.

Contractors on the scheme required a reliable and high quality waterproofing system that would keep the stations ‘completely dry’, and with a 120-year design life. For Phase 1 of the project, four of the five main contractors specified Preprufe Plus for use predominantly below the bases of more than 30 stations and cast onto diaphragm walls in a number of additional locations.

Preprufe® is an advanced membrane system which offered the safest and most reliable waterproofing option. Designed with synthetic adhesive layers, Grace’s patented Advanced Bond Technology™ enables concrete to aggressively adhere to Preprufe®, forming a unique intimate seal which prevents any water migration between the waterproofing and the structure, substantially reducing the risk of leaks. To complete the comprehensive waterproofing specification, Grace also supplied its Bituthene® 8000HC preformed membrane to provide a continuous waterproofing barrier system where the outside of the walls can be accessed.

The success of landmark transport projects which have used Preprufe® perfectly demonstrates the importance of specifying a geomembrane which is fit for purpose, economically and environmentally sustainable and delivers waterproofing performance like no other system on the market. Proven to deliver in the most challenging environments, Preprufe® continues to be chosen to protect many of the most important infrastructure projects worldwide.

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GCP Applied Technologies

GCP Applied Technologies

GCP Applied Technologies (formerly known as Grace Construction Products): GCP products are specified by architects and engineers and are used by contractors, ready mix, precast and block producers, cement manufacturers to enhance the durability,...
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