UHPC/Asphalt system versus concrete for pavement, industrial flooring and roads


What is UHPC Phalt?
UHPC Phalt is a grouted macadam comprising 
an open graded asphalt that is flooded with high 
strength microsilica based mortars. The open 
graded asphalt is mixed to a design mix at a 
local asphalt plant and delivered to site in tipper 
trucks. It is placed via traditional paving techniques.

The UHPC Phalt mortars are delivered in 
1 tonne bags and mixed via a continuous flow 
pump machine. The mortar is mixed for a certain 
amount of time to achieve correct viscosity then 
flooded via a large hose onto the asphalt matrix.

How does the whole construction 
thickness fit together?
UHPC Phalt can be laid at depths of 30 mm / 
1,18 in upwards (typically maximum depth used 
is 40 mm / 1,57 in). UHPC Phalt is the top layer 
of the pavement that is supported by a basecourse 
layer. The basecourse layer can vary dependent 
on environment and loadings, internal or external 
applications. Preferred basecourse materials to 
support the UHPC Phalt topping are high modulus 
macadam basecourse or Foamix recycled binder 
course. CBM bases are ideal for use for large 
internal areas. 
The UHPC Phalt pavement structure (DPH + 
Basecourse) is laid onto varying depths of Type 1 stone/capping dependent on the CBR value of 
the sub-grade. 

Advantages of UHPC  Phalt
  • Very high load carrying capacity
  • Frost and rew resistant
  • Jointless laying
  • Quick installation
  • High early strength
  • Temperature resistant from - 60°C/-76°F - 90°C/194°F

Where is UHPC Phalt used?
  • Airports
  • Ports
  • Lorry marshalling areas
  • Service yards
  • Acces roads
  • Bus stations / depots
  • Waste management facilities
  • Car parks
  • Indoors for warehouse floors
  • Anywhere that concrete is conventionally used 


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