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Aggregate is a natural raw material that is indispensable for making concrete. We produce several million tons of it every year.
Vicat
Bannière chiffres cles
picto
granulat

72

quarries

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ventes

22,7

million tons of aggregate sold

Aggregate can be natural (sand and gravel) or recycled.

Aggregate

Used mostly for surfacing roads, aggregate is also indispensable for making concrete. Today Vicat produces and markets more than 24 million tons of aggregate every year.

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aggregate construction site
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Vicat
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aggregates quarry
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Nicolas Dormont
Contenu de la page Expertise
Vicat's aggregate expertise

Our different kinds of aggregate:

There are several kinds of aggregate, differing in terms of their chemical and physical composition, especially their grading and hardness.

The range of Vicat aggregate available depends on:

  • the geological nature of the materials extracted (alluvium or rock)
  • the type of processing (if any): river or crusher gravel and sand The aggregate is then used in a variety of ways.
Did you know?

Every year, you 'consume' 6 tons of aggregate on average!

This is because aggregate is the raw material used throughout your everyday environment: 

  • 1 ton of aggregate for a sandbox
  • 300 tons for a house 
  • 1,000 tons for a cycle track 
  • 30,000 tons for 1 km of freeway 
  • 30,000 tons for 1 km of high-speed railroad,
  • 60,000 tons for a high school
  • 100,000 tons of aggregate for a hospital
  • a few grams for a tube of toothpaste
Locations

Our facilities

map Brazil
2 quarries
map France
53 quarries
10 million tons of aggregate sold
Map India
1 quarry
0.6 million tons of aggregate sold
Map Senegal
4 million tons of aggregate sold
Map Switzerland
20 quarries
2.5 million tons of aggregate sold
Map Turkey
7 quarries
5.5 million tons of aggregate sold
  • Brazil
  • France
  • India
  • Senegal
  • Switzerland
  • Turkey
Production of aggregate

The 6 main steps

Step 1: Extraction

Aggregate can be extracted in different ways:

  • by front-end loader if above water,
  • by bucket-ladder excavator or dredge connected to land by floating conveyor belt if under water,
  • by explosive blasting of rock (each blast produces a large volume of fragmented rock).

 

Step 2: Transfer of the material to processing facilities The material can be transferred:

  • by conveyor belt, to reduce handling
  • by quarry hauler or large trucks
  • by barge Step 3: Processing Aggregate is processed in a number of operations:
  • crushing to obtain smaller sizes
  • screening to sort the aggregate into different size categories. Each screen retains only aggregate larger than a certain size. With a succession of screens, the aggregate is divided into different gradings.
  • washing, for certain applications requiring very clean aggregate

Step 4: Storage Alluvial material is stored in stockpiles, hoppers, or silos. It all complies with clearly defined criteria and is divided into different categories:

  • sands of different grades
  • gravel sorted by size
  • riprap

Step 5: Weighing All loads of materials leaving the quarry are weighed by means of weighbridges.

Step 6: Delivery Deliveries are made by the means most appropriate for the itinerary: by truck, barge, or train. If there is a concrete batching plant or asphalt mixing plant at the quarry site, the materials may be processed in situ.

Source of Vicat aggregate:

Aggregate won from quarries may be of two kinds, depending on the local geography:

  • Alluvial quarry: the aggregate won from alluvial quarries is the material deposited by rivers or glaciers. It can be excavated above the waterline, in benches 5 to 8 meters high, or it can be dredged in water. Alluvial aggregate requires less crushing but still needs to be screened to obtain the gradings required.
  • Rock quarry: the aggregate won from rock quarries is broken out by blasting, then crushed, screened, and sometimes washed. This kind of aggregate is mostly intended for earthworks, manufacture of asphalt or concrete blocks, but, increasingly, it is also used to make concrete for other purposes. In addition, recycling of waste materials in construction (concrete from demolition work) and civil works (old asphalt from roads) is producing an important source of raw materials.

Comprehensive quarry expertise

The Vicat group masters all the skills required for operating quarries: geological prospecting, property negotiation, filing and following up approval requests and impact studies, quarrying itself, crushing and screening materials, commercial activities, and delivery to customers.

Our environmental strategy :

Intent on safeguarding the environment, we minimize disturbance during and after the economic lifetime of quarries:

  • effective water-treatment plants to prevent discharging dirty process water
  • use of enclosures to limit dust and noise emissions

Step 4: Recycling inert waste in quarries

Most of our quarries can be used to dispose of inert waste from nearby demolition projects (bricks, concrete, roof tiles, etc.) or earthworks:

  • Some of this waste, which will be stockpiled on site, identified, then sorted (for example, steel reinforcement will be removed from fragments of reinforced concrete), crushed, and processed to make it suitable for repurposing,
  • repurposable materials are treated as if they were a new mineral deposit,
  • materials that are not of the required standard for use as aggregate can be used beneficially for quarry restoration.

 

This process of recycling and repurposing of materials from construction and civil engineering projects is a showcase example of circular economy:

  • sparing of natural resources,
  • restoration of sites,
  • reduction of waste volumes,
  • reduction of transport (back loading).
For all our news
News
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02/05/2019

Gécamines quarry in Senegal is seeing big

Résumé pour affichage teaser (n'apparait pas dans la page actualité)

The Gécamines quarry in Senegal is seeing big. After major capital expenditure, we have now attained production capacity of 2.3 million tons per year.

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02/05/2019

Roller-compacted concrete for safe roads

Résumé pour affichage teaser (n'apparait pas dans la page actualité)

Dust in summer, mud in winter.... Vehicles on the road to Vicat's Martres d'Artière quarry were causing problems. Find out about the solution we chose.

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02/05/2019

Investment boosts production capacity at Planaz quarry, France

Résumé pour affichage teaser (n'apparait pas dans la page actualité)

The Planaz aggregate quarry has invested in new high-performance plant to strengthen its position on the market in the Annecy region.

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02/05/2019

Vicat beer: second brew using barley grown on our restored quarry land

Résumé pour affichage teaser (n'apparait pas dans la page actualité)

Two Vicat craft beers, a pale and an amber lager, brewed with barley grown on our restored quarry land have been produced by the Les Ursulines brewery in Crémieu, in eastern France. This second brew was tapped at the brewery on 23 April, 2019.