Material production
Colas produces and markets construction materials for mobility and land development infrastructure.
Committed to a low-carbon approach and deeply rooted in local territories, we make the most of natural and recycled resources to build durable and safe structures.
Nexstone: Colas expertise in construction materials
Natural materials sourced from local territories
Aggregates (sand, gravel, crushed rock) form the foundation of all infrastructure. Our teams extract and process local mineral resources using rigorous, environmentally responsible methods.
Each quarry is committed to:
- Responsible resource management
- Continuous traceability and quality control
- Optimized logistics to minimize transport and CO₂ emissions
Recycled materials for a circular economy
Nexstone recovers materials from deconstruction sites and roadworks. These inert materials are collected, sorted, crushed, and reused in the production of new aggregates or concrete.
This circular economy approach helps preserve natural resources, reduce waste volumes, and limit transport-related emissions. By prioritizing short supply chains and the reuse of local resources, Colas actively contributes to decarbonizing the construction sector and creating more responsible infrastructure.
Ready-mix concrete and precast elements
Our concrete plants and precast factories produce concrete and construction elements tailored to each use: civil engineering structures, roadways, buildings, and urban developments.
These solutions combine strength, durability, and a low carbon footprint, with specific formulations:
- Low-carbon concrete, to reduce emissions
- Permeable concrete, for improved stormwater management
- High-performance concrete, designed for the most demanding structures
- Precast elements, ensuring quality and fast installation
Responsible materials for building tomorrow
Colas produces natural and recycled materials that meet today’s environmental and societal challenges, serving clients, citizens, and territories. As a trusted partner for public and private stakeholders, Colas combines environmental responsibility, industrial quality, and local services to deliver projects that sustainably transform uses and infrastructure.
Figures that illustrate our commitment
Figures that illustrate our commitment
A fully controlled production chain from quarry to site
Colas’ strength lies in its complete industrial organization, connecting material production with the design and construction of infrastructure.
Frequently questions
Colas produces a wide range of construction materials for transport and development infrastructure: aggregates, ready-mix concrete, asphalt, and precast elements. These materials can be natural or made from recycled construction waste, following a circular economy approach.
Every stage, from extraction to processing, undergoes strict quality control. Production facilities are equipped with laboratories and follow rigorous traceability protocols, ensuring reliability, consistency, and compliance with current standards.
Nexstone, a Colas group brand, brings together expertise in aggregates, concrete, and precast elements. It develops local, low-carbon solutions, promoting the use of recycled materials and reducing the environmental footprint of construction projects.
The company relies on several strategies: local production, optimized logistics, use of recycled materials, and innovation in low-carbon formulations. These actions help reduce transport, lower CO₂ emissions, and preserve natural resources.
Tell us about your project
Do you have a construction or renovation project?
Benefit from Colas’ industrial and environmental expertise for your construction materials.
