hiDCon® is a cement-bound building material that can absorb deformations of up to 50% of its component height under defined loads. It is used in construction to optimise the structure with controlled allowance of deformations or to absorb energy in dynamic applications.

Examples of applications:

  • Tunnel construction with compressive or swelling rock.
  • Limiting anchor tensile forces
  • Infrastructure constructions in creep slopes
  • Deformation absorption under thermal effects (icing)
  • Deformation absorption under dynamic load

Convergent shotcrete lining with high load-bearing capacity

In 2004, the first tunnel section was equipped with the highly deformable hiDCon® concrete elements. The beam elements were installed in the shotcrete lining to support the rock while allowing controlled convergence of the tunnel. The hiDCon® elements have been continuously developed and a number of applications, mostly in compressive or swelling conditions, could be realised.

Modular squeeze system

The most important properties of hiDCon® elements:

  • High deformation capacity with almost constant load resistance
  • Increasing load resistance at the end of the deformation capacity
  • Variability of shape and dimensions of the crush elements
  • Control of load-bearing and deformation properties
  • Use of approved base materials
  • Insignificant creep with constant long-term loading

High ductility - high stress level

are generated by

  • the high-strength concrete matrix with porous aggregates
  • specially formed reinforcement with fibres
  • and controlled closing of the pores with prevented lateral expansion until material consolidation (e*)

Element types




Patrick Steiner

Civil Engineer

Member of the extended executive board
Division manager hiDCon
Development and design of measuring systems

T 0041 44 806 29 52

Markus Stolz

Civil Engineer

Member of the extended executive board
Division manager geotechnics /
Geotechnical instrumentation and measurements / hiDCon

T 0041 44 806 29 41

Médéric Piedevache

Engineering Geologist ENSG

Member of the extended executive board
Branch manager Nancy, France

T 0033 3 83 94 04 50

Thomas Fierz

Civil Engineer ETHZ

Managing director Solexperts AG and branches /
Manager Solexperts France SARL /
Manager Solexperts GmbH

T 0041 44 806 29 56