Helping the Milan subway system stay dry

Milan, Italy has dealt with a rising water table for decades. That made it difficult to build a new one-kilometer tunnel for Milan's Metropolitan line. Waterproofing was essential, as the site runs close to the canal.

The contractors chose our PREPRUFE® waterproofing solution. Waterproofing was used on the horizontal foundation slab, vertical diaphragms and the roof.

PREPRUFE® waterproofing ensures perfect impermeability. Even in the case of accidental damage, it reduces lateral migration of water between the membrane and the structure itself. That means the tunnel stays dry, and the trains can stay running

Civil tunneling projects achieve greater efficiency and productivity 

Contractors have relied on our TYTRO® products in large tunnel projects across Australia, North America, Western Europe and Latin America.

For instance, TYTRO® products have been used on part of many of Brazil's most recent drill and blast highway and metro tunnel projects. Largely due its significant productivity and cost advantages, TYTRO® shotcrete has quickly become one of the top solutions in civil tunneling projects in Latin America.

We have extensive experience in underground construction, including soft ground tunnel projects such as Crossrail (London) and the WestMetro (Helsinki). Wherever projects take you, our world-class field technical specialists are available to work with your team onsite. Count on us to ensure you get an efficient mix that suits your project needs.

Helping make Crossrail real

Crossrail is one of the largest underground projects in Europe. It has 42 kilometers of new tunnels up to 30 meters under the streets of London.

The contractors appreciated our experience in underground construction. That's one reason why they chose us to help with waterproofing and other solutions at several of the new stations, including:

  • Canary Wharf: To hold back up to 10 m of surrounding Thames dock water, builders used our PREPRUFE®, ADCOR® and BITUTHENE® waterproofing solutions.
  • Liverpool Street: About 4,000 m² of PREPRUFE®waterproofing provides superb protection to an underground area almost quarter of a mile long.
  • Tottenham Court Road: At a cost of £1 billion, it's three stories underground. Builders relied on PREPRUFE® and BITUTHENE® waterproofing solutions as well as ADCOR® hydro-expansive and injectable waterstops.

Digging deep in Seattle

The Beacon Hill tunnel is a twin tunnel located east of I-5 in Seattle.

One tunnel carries northbound trains. The other carries southbound trains. Overall, the tunnel is approximately one mile long and includes a 165-foot (50 m) deep station accessed by an elevator at street level.

The ADVA® Cast precast segments were cast in eight sets of highly accurate, machined steel molds. Each set forms the shapes for the seven segments that make up one ring. The molds were cycled once per day and cured in enclosed tents overnight with steam heat.

Protection of underground tunnel built below the riverbed

The 1km immersed tube tunnel under the Rio Coatzacoalcos in Mexico was constructed out of reinforced concrete and consisted of six separate sections. Pre-fabricated in a dry dock, they were towed out to the immersion site and sunk into the riverbed to a depth of 30m below sea level before being connected.

Given the permanent immersion in aggressive salt water and the challenge of producing a crack-free concrete structure, the project design engineers evaluated numerous spray-applied waterproofing products on trial panels in a side-by-side performance comparison. The panels were tested under exacting in-situ conditions, including UV, high humidity and a range of temperatures. The INTEGRITANK® system exhibited exemplary performance characteristics throughout.

The INTEGRITANK® system was applied to more than 28,000m² of the tunnel’s external surface while in dry dock to provide a watertight, chloride-resistant, flexible and protective barrier against water ingress. The final waterproofed section was successfully immersed under the river in March 2013, creating a new and strategically important transport link for the region’s local oil refinery infrastructure.

Airport Construction Projects

The International Air Transport Association projects the number of people flying to almost double to 7.2 billion passengers by 2035. We've played a role in many airport construction projects that will help move all those people. Fireproofing, concrete and waterproofing are as important to airport construction as runways, terminals, parking structures, tarmac paving and radars. We furnish multiple solutions to many airport construction projects.

learn more

Arts & Education Projects

We enjoy working on most any building project. But to help create a space where beautiful music will be played or priceless artwork will be displayed is especially satisfying. We provide art museums, concert halls and university facilities around the world with waterproofing, concrete products and other structural solutions.

learn more

Bridge Waterproofing Projects

As the main transport links that keep towns and cities flowing, bridges are of vital socio-economic importance. Waterproofing our rail and road bridges is an essential part of any bridge building or refurbishment project to protect against attack from the elements. Stirling Lloyd, acquired by GCP in May 2017, has a long history of protecting many of the world’s most prestigious bridge. Our waterproofing solutions have helped protect countless bridges across the world.

learn more

Commercial Building Projects

From big buildings to modest ones, from skyscrapers to smaller shops, constructing commercial buildings is an amazing accomplishment. We deliver what you need to do it right. From waterproofing to fireproofing to concrete technology to roofing underlayments, we have what you need to construct durable, sustainable, beautiful commercial buildings.

learn more

Energy & Industrial Facilities Projects

Energy and industry: They're the foundation of the global economy. Which means building these facilities to last is essential. Our experience spans manufacturing facilities, recycling, sustainability and more. We're proud to provide concrete technology, waterproofing products and dozens of other infrastructure solutions to energy and industrial clients. Our experience spans manufacturing facilities, recycling, sustainability and more.

learn more

Infrastructure Projects

Most people don't give it a second thought. But we do. Whether it's tunnels, canals or bridges, infrastructure represents a significant number of projects we have assisted our customers to bring to fruition using our solutions. Whether its tunnels, canals or bridges, infrastructure represents a significant number of projects we have assisted our customers to bring to fruition using our fire protection, waterproofing, precast concrete and innovative cement additive solutions.

learn more

Mass Transit Projects

From San Francisco to Seoul, London to Qatar, Saudi Arabia to Shanghai, we help mass transit projects stay dry, remain structurally sound, finish on time and get people moving. We love every part of big transportation infrastructure projects, whether it's waterproofing, concrete admixtures, grouts or fire protection. From San Francisco to Seoul, we help mass transit projects stay dry and remain structurally sound.

learn more

Residential Building Projects

We don't just work on skyscrapers and tunnels; we also provide weather barrier solutions to protect homes against rain, snow, cold, heat and more. Our roofing underlayment, flashing and weather barrier solutions help architects, contractors and homeowners protect homes against rain, snow, cold, heat and more.

learn more

Stadium Construction Projects

Whether it's keeping things dry or protecting essential infrastructure, contractors turn to us for solutions during stadium construction. Whether it's keeping the building dry or protecting essential infrastructure, contractors turn to us for solutions during stadium construction.

learn more

Underground Mining Projects

We've helped mining contractors around the world on some incredible projects. Top mining companies rely on the TYTRO® shotcrete system in their global underground operations. We help mining operations reduce installed costs and optimize mix designs in mining projects.

learn more