Environmental effects
Sustainability
Life Cycle Analysis
RheoFalt HP-AM ensures that aged bitumen with an increased asphaltenes content (polar effect of asphaltenes over time) is again improved to a new value. RheoFalt HP-AM does not do this by reducing the content of asphaltenes, but by isolating the polar effect. This makes both aged bitumen 100% reusable, as well as the current bitumen (which contain higher asphaltene contents by cracking and hydrogenating) can be used without disturbing the colloidal equilibrium.In Life Cycle Analyses calculations, one looks at the life cycle of a product from raw material extraction to the disposal phase after use . Because Rheofalt HP-AM makes it possible to reuse old asphalt for multiple life cycles, time and again for 100%, the LCA is infinite.
An average Environmental Cost Indexing value (costs needed to neutralize environmental negative effects) , calculated according to the Dutch ECO CHAIN ​principles, provides an ECI value of 4.51 € for 50% recycling mixes. The calculation on 100% recycling mixes with the use of Rheofalt HP-AM (0.3% addition) shows an ECI of 2.83 €.
The impact on the ECI of RheoFalt HP-AM as product amounts to -0.12 € per 0.1% addition per ton of asphalt. The calculated asphalt mix with 100% recycling and 0.3% addition of RheoFalt HP-AM thus has the lowest Environmental Cost Indicator of a range of calculated mixtures with 0-30-50-70 and 100% recycling.
Naturally, this depends on the energy consumption per asphalt plant and must be specified by the asphalt plant itself and be recalculated for use.
See the following table:
|
Adding RAP percentage in asphalt |
ECI costs |
| 0% | €6.56 in 1mt of asphalt produced and processed |
| 30% | €5.41 |
| 50% | €4.51 |
| 70% | €3.58 |
| 100% (with RheoFalt HP-AM 0.3%) | €2.83 |
Biobased and circularity
Because of the origin from the cashew peelings and the non-addition of other products,
RheoFalt HP- AM is completely bio-based.
Because of the ability to reduce obsolete bitumen to new value, RheoFalt HP-AM is able to make asphalt completely circular up to 100% reusability without loss of properties.
CO2 profile
Compared to 50% recycling, the 100% recycling mix with 0.3% Rheofalt HP-AM per mt processed and produced asphalt from 47,41kg CO2 to 34,06kg CO2. The contribution of RheoFalt HP-AM has been calculated at 2,71kg CO2 because of production, storage and dosing. Per 0,1% dosage (depending on the penetration increase requirement) this is 0,9kg of CO2 consumption per mt of asphalt.
Functionality
Asphalt mixtures will fall into a better penetration rate at higher PR percentages. RheoFalt HP-AM increases the penetration, according to the log-pen mix calculation. It lowers the stiffness of a mixture and increases the resistance to fatigue. (less susceptible to cold fracture).
Rheofalt HP-AM isolates the polar action of asphaltenes, thus extending the life span.
Rheofalt HP-AM improves the phase angle so in 3D elemental calculations less asphalt thickness is needed for constructions.
Normally an asphalt layer of 70% or more recycling effects a penetration grade around 35. With an average add of 0.3% RheoFalt HP-AM it can be pushed back to a penetration of 50.