Ultra-high-
performance
building material

Ductal^® was developed by Bouygues in partnership with Lafarge and Rhodia under the generic name of Reactive Powder Concrete and is marketed under the brand name of Ductal^®.

This cementitious material consists of cement, sand, silica fume, silica flour, admixture, water and high-strength steel fibres.

This material reaches compressive strengths of 170 to 230 MPa.

The durability properties are those of an impermeable material, better than conventional high performance concrete. Advantages are
- No need for conventional reinforcement
- Great improvement of durability, with a resistance to permeability 50 times better than normal high strength concrete
- Resistance to aggressive environments and loading from blasts
- Permits the use of much thinner sections
- Provides complete freedom on the shape of the section
- Reduces the concrete volume of a structural member to only one third to one half of its conventional volume
- Dramatically reduces the structural weight to be supported by a structure
- Provides both direct and indirect cost saving.