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Owner of data set ELLINIKI TECHNIKI A.T.E.V.E. |
Technical purpose The declared product is a group of hot mix asphalt (HMA) mixtures intended for road construction and pavement works, including base courses, binder courses and wearing courses. The mixes are produced at the Koropi asphalt plant in Attica and are supplied in bulk for direct paving.
Hot mix asphalt is a composite material made mainly of mineral aggregates and asphalt bitumen. For the mixtures covered by this EPD, the Koropi plant uses:
• Natural aggregates from local quarries (sand, fine and coarse aggregates, anti skid aggregates and mineral filler), forming the structural skeleton of the pavement.
• Asphalt bitumen 50/70 as the primary binder, selected according to project specifications and performance requirements.
• Recycled aggregates and RAP (reclaimed asphalt pavement) delivered from a CE marked C&DW (AEKK) facility located next to the asphalt plant. The product group includes distinct mix types based on specific mix designs: conventional mixes (no suffix) are produced with natural aggregates from quarries, RC mixes are produced with recycled aggregates, and RAP mixes incorporate RAP according to the approved mix design.
No bio based materials are used in the mixtures or the manufacturing process, and biogenic carbon flows are therefore not relevant for this product group.
Manufacturing process
The hot mix asphalt is produced in a temperature controlled industrial process with the following main steps:
1. Receiving and storage of aggregates – Natural and recycled aggregates are delivered to the plant and stored in dedicated on site stockpiles according to size fraction and origin.
2. Drying and heating – Aggregates are dosed from cold feed hoppers into a dryer drum, where moisture is removed and the material is heated using fuel combustion to the required production temperature.
3. Screening and hot storage – Dried aggregates are screened into defined fractions and stored in hot bins above the mixer.
4. Dosing of constituents – Aggregates, recycled aggregates and RAP are proportioned according to the asphalt mix design. Bitumen, stored in thermostatically controlled tanks, is accurately weighed and fed into the mixer.
5. Mixing – All components are mixed to obtain a homogeneous asphalt mixture with the specified grading, binder content and workability.
6. Loading and dispatch – The finished mixture is discharged into insulated trucks and transported in bulk to the construction site; no packaging materials are used.
Product range covered by the EPD
This EPD covers ten hot mix asphalt types produced at the Koropi Plant – Athens, Greece:
• AC 10
• AC 12.5
• AC 12.5 RC
• AC 12.5 RAP
• AC 20
• AC 31.5
• AC 31.5 RC
• AC 31.5 RAP
• AC 12.5 Skid Resistance I
• AC 12.5 Skid Resistance I (50/70 Add.)
AC 12.5 RC is used as the representative product for this group. The declared A1–A3 results in the main LCA tables correspond to this mix, with a GWP fossil of 30,57 kg CO₂e per declared unit. All mixtures are manufactured with similar raw materials and process conditions; differences in impacts arise mainly from variations in mix design (aggregate grading, RAP and recycled aggregate content, binder content and skid resistance additives).
For modules A1–A3, the variation in GWP fossil of the other mixes relative to the representative mix is as follows (rounded to the nearest percentage point):
• AC 10: +15,60 % (35,34 kg CO₂e/DU)
• AC 12.5: +15,64 % (35,35 kg CO₂e/DU)
• AC 12.5 RC: 0 % (30,57 kg CO₂e/DU) - Representative
• AC 12.5 RAP: +12,33 % (34,34 kg CO₂e/DU)
• AC 20: +13,08 % (34,57 kg CO₂e/DU)
• AC 31.5: +10,44% (33,76 kg CO₂e/DU)
• AC 31.5 RC: -10,21 % (27,45 kg CO₂e/DU) – Best Case Mix
• AC 31.5 RAP: +4,97 % (32,09 kg CO₂e/DU)
• AC 12.5 Skid Resistance I: +42,95 % (43,70 kg CO₂e/DU)
• AC 12.5 Skid Resistance I (50/70 Add.): +45,11 % (44,36 kg CO₂e/DU) – Worst Case Mix
Consequently, the variation in GWP fossil (A1–A3) for the product group, when expressed relative to the representative mix AC 12.5 RC, is −10,21 % / +45,11 % between the best case and worst case mixtures. All assessed products fall within the ±50% variation limit as specified by EN 15804+A2 and EPD Hub General Programme Instructions that cover multiple products using a representative product approach.
Substances of very high concern (REACH)
The product does not contain any substances of very high concern (SVHC) listed in accordance with REACH in concentrations above 0.1 % by weight of the product. |
