IN-PLACE RECYCLING: a complete range

Hot, warm and half-warm recycling with a Voyager
A genuine hot-mix plant, the Voyager is a mobile TSM (dryer drum mixer) plant. The trailer of this self-propelled
travelling plant carries all of the functional elements and the bitumen storage. The aggregates are coated at low
temperature (90°C), using the warm method (120/130°C) or the traditional hot solution (140/150°C), depending
on the chosen heating temperature.
>>> For the recycling of surface layers, draining asphalts and low energy-treated base layers.

Cold in-place recycling of hydrocarbon-containing layers with the MCR
This solution consists of the reprofiling and cold reprocessing of graded and possibly crushed products, mixed
with water and binders. The target quality is that of a traditional stationary plant..
>>> This process is suitable for structural recycling and major sites with good base layers.


Cold recycling train MCR 250, Marini

Recycling with the MCR after preliminary stabilisation
Degraded capping layers must be stabilised prior to recycling. The MPH, in conjunction with a combined spreader,
is the ideal solution once the hydrocarbon-containing products have been milled. Method 3 is then used in the
second phase.
>>> A costly solution reserved for major sites with significant degradation extending to the base layer.

Deep recycling with the MPH and prior milling
After milling without the reincorporation of RAP, the deep recycling of carriageways subjected to low to medium
levels of traffic can be performed using hydraulic and/or bitumen binders, emulsion or bitumen foam. A new
surface layer is then created.
>>> For rural routes and secondary roads and/or roads subject to medium levels of traffic with significantly
degraded surface layers.


MPH Stabiliser, BOMAG

Deep recycling with the MPH and incorporation of surface layers
Prior milling is not always necessary and the thin layers of hydrocarbon-containing materials can be incorporated
into the process.
>>> This inexpensive solution commonly applies to rural routes and secondary roads.



CONTINUOUS HOT RECYCLING: two main methods




The parallel flow technique: TSM
> A very long drum with two diameters, a rotative mixer with paddles, a maximum 25 % recycling rate.








The counterflow technique: Retroflux
> For a recycling rate higher than 25 %, when RAP supplies are erratic. Ecological advantage: no longer any emissions problems, RAP never touch hot gas,
asphalt introduced behind the flame.





RECYCLING IN BATCH PLANT: 4 possibilities

RAP to the foot of hot elevator, maximum 10-15%
> Low investment required, easy to settle.

RAP feeding into the virgin aggregates weigh hopper or into the mixer, maximum % of RAP used
up to 25%
> Virgin aggregates could be screened; It allows a very precise metering by weight of RAP.

      
10-15% recycling    ----   25% recycling

RAP feeding into the dryer via a recycling ring. It permits to reach up to 35% of RAP in the final mix
> High RAP %; heating starting in the dryer by irradiation from the flame; low capital investment; plant output
unchanged when recycling up to 35% ; moisture exhausted through same main fan. Possibility of upgrading and
retrofitting existing batch plants. Emission well within the limits (same emission as when batch plant working with
no RAP).

RAP 50%, preheated and dried using a special parallel flow dryer drum mod ER
> Process and equipment permits to screen virgin aggregates; very accurate metering of RAP by weight; smooth
and controlled heating of RAP; very high RAP percentage. Plant output unchanged when recycling up to 50%;
emission comfortably within the most strict limits..

      
35% recycling    ---     50% recycling


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