These are materials that remain chemically inert, in contrast to cement and water, which by their chemical action lead to the hardening of concrete. Aggregates are significant since they bond and adhere together in a manner that contributes to the mechanical strength of the final product.
Lafarge, a subsidiary of HERACLES Group, has 7 limestone quarries for the extraction and production of aggregates. Our quarries have well equipped quality control laboratories and qualified personnel to ensure absolute product quality.
• Concrete aggregates
• Road construction materials
• Asphalt mix materials
• Mortar aggregates
• Boulders for port projects
• Aggregates for lime production
The main Aggregate quarries of HERACLES Group
Mesaio Thessaloniki Quarry
The technologically advanced facilities along with well-trained employees enhance the competitiveness and provide impetus to the quarry activity.
Araxos Achaia Quarry
The quarry of Araxos in Achaia, is one of the oldest quarries of Lafarge. However, the investments that have been implemented over the last decade make it one of the most modern quarries in Greece. It is worth noting that the Araxos quarry was the exclusive supplier of the Rio-Antirio Bridge project, delivering a total of 750,000 tonnes of aggregates of high-quality standards.
Categories of aggregate fractions
Following the stage of their extraction, the aggregates pass through special crushers, where their size is reduced and then they are separated accordingly.
This provides the three basic sizes (fractions) of aggregates used in concrete: Sand (0-4mm) Fine aggregate (4-16mm) Gravel (16-32mm)
For higher or equivalent categories of concrete with C20 / 25, three fractions are required (CTS - 97). There are other sizes of aggregates for more specialised uses such as: “Rice” (4-8mm) Coarse gravel (32-64mm)