Overlay

Withstand the test of time.

 

 

Information

Brochure
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Technical information
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Fast track your construction process and reduce the amount of material needed for your structure with this thixotropic technology — guaranteeing maximized life span and minimized maintenance over time.

 

This cast-in-place dense UHPC composition presents a cement-based matrix with a very low void ratio, making it impermeable to carbonation and alkali reactivity, and preventing the penetration of aggressive chemical agents into the applied layers (preventing rebar corrosion), even under heavy stress from road traffic and deicing chemicals.

Ductal® overlay provides a durable and impermeable layer against chlorides and can also structurally strengthen an existing bridge deck. It is an efficient rehabilitation method to extend the service life and to enhance the long-term durability performance in a cost-effective way.

Ductal® overlay offers an optimized solution that protects, strengthens and waterproofs at the same time while saving considerable time during construction.

01 - What it is

 

Ductal® Overlay includes both thixotropic and self-compacting consistencies that increase the range of applications (slopes up to 15% and horizontal surfaces applications) while providing speed of construction.

Thanks to its unique combination of ultra high mechanical properties and bending behavior, Ductal® overlay can be used in very thin layers to increase the structure’s bearing capacity, thus reducing the added dead load and extra weights, resulting in reduced material and labour needs.

02 - Implementation

 

Add a highly protective, durable, low maintenance layer to new and existing concrete surfaces with Ductal® Overlay, adding protection, strength, durability, waterproofing and resistance to chemicals to any project.

The solution’s implementation can be performed easily with reduced minimal down time, which diminishes risks related to planning and execution deadlines.

03 - Benefits

 
  • New overlay
  • Bridge deck rehabilitation and protection
  • Industrial/warehouse floor slab protection
  • Building slab strengthening and repair

04 - Applications

Discover our projects

 

Yunnan Bridge

The Honghe Suspension Bridge between Honghe Hani and Yi Autonomous Prefecture in Yunnan Province, South of China was completed within 35 days.

 

IA 163 Floyd River Bridge

In partnership with Iowa State University and Iowa State DOT, with participation from Wapello and Buchana counties in Iowa, this project was the first to implement overlay application of UHPC using automated paver system brought by Walo from Europe.

 

Parking Saas Fee

Deformation of the concrete rolling surface, structural deficit in terms of puncture resistance, sloping terrain (5% gradient) ... the equation to be solved for the repair of the covered car park at the Saas-Fee ski resort was arduous. Ductal® took up the challenge and developed an innovative product meeting all these constraints.

 

Zurich Airport railway station

The four tracks of Zurich Airport's underground railway station have been renovated and lowered without interrupting traffic.

Other solutions

Give shape to tomorrow.
Contact us.
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