Stone and gravel for construction expertise

Comprehensive raw materials, quality and supply solutions
Hands are holding a mixture of small stones and gravel of various sizes and colours; a large gravel bed is visible in the background © Szalontai Zsombor/roxit
© Szalontai Zsombor/roxit

Stone and gravel are among the most essential building materials in the construction industry. They provide load-bearing capacity, stability, frost resistance and drainage, and serve as aggregate components in concrete and asphalt production. As a result, their range of applications is extensive: they are used in civil engineering (foundations, roads, pipeline construction), building construction (ceilings, columns, walls), residential construction (floor slabs, cellars, outdoor areas), gardening and landscaping (pathways, retaining walls, gabions), industrial sites (factory floors, logistics areas), railway lines (track bed, sub-base), hydraulic engineering (bank and embankment protection) and flood protection systems (dams, protective structures). Given their critical role, it is all the more important that the quality, availability and procurement of gravel and stone for construction projects are as straightforward and reliable as possible. 

What to look out for when buying stones and gravel

The wider the range of applications, the more important it becomes to have clearly defined product ranges, standard-compliant grain sizes, fast delivery routes and straightforward advice from the right points of contact. Today, anyone looking to purchase stone and gravel is not just looking for materials, but:

A pile of gravel in the foreground of a building site; in the background, several people in high-visibility clothing are standing next to a lorry and piles of building materials. © Szalontai Zsombor/roxit
  • a reliable supply, even for large or fluctuating volume requirements
  • proximity within the region, to reduce transport costs and CO emissions
  • predictable pricing and material availability
  • sustainable solutions
  • clear and responsive points of contact

This is exactly where we come in: roxit supports construction and infrastructure projects with high-quality, locally sourced raw materials backed by expert guidance and tailored to each specific project – reliable, standard-compliant and sustainable throughout the entire construction process.

The challenges we help solve

Today’s construction, infrastructure and industrial construction projects face a growing range of challenges. Material quality can fluctuate, delivery delays can bring work to a standstill, and public-sector clients increasingly require strict compliance with standards and sustainability requirements. At the same time, project teams are under constant pressure to meet tight schedules and control costs. Civil engineering and traffic route construction projects, in particular, frequently require large volumes of materials over extended periods, often with peak loads or short-term surges in demand. The raw materials and building materials industry, for its part, depends on a reliable supply of intermediate products, while recycling and waste management companies require proof of quality and regulatory clarity. Public contracting authorities expect transparent documentation and certified quality, industrial and commercial buildings require stable sub-bases, and environmental and landfill projects are subject to strict requirements regarding land reclamation and material acceptance.

Why roxit?

roxit is your trusted source for the reliable supply of raw materials – stone and gravel – based on partnership and dependable performance.

Why clients choose roxit for stone and gravel

Clients choose roxit because they can depend on consistent quality, even for large or fluctuating order volumes, dependable deliveries, expert technical support and a commitment to continuous process improvement. Many of our sites also have rail logistics facilities, expanding our delivery capabilities and strengthening supply reliability. What truly sets us apart is the way we work: we think proactively, take a solution-oriented approach and actively support our clients throughout their projects. Our teams assist with selecting the appropriate grain sizes, questions about standards and applications, project-specific custom solutions, and coordinating with concrete and asphalt plants. In doing so, we take joint responsibility not only for supplying materials, but also for their performance, workability and overall project success.

Aerial view of a quarry with terraced extraction areas, a processing plant and spoil heaps, surrounded by roads and countryside. © Tomislav Malencia/roxit

Production sites in our core countries

roxit is one of the leading raw materials brands in Central, South-Eastern and Eastern Europe. With around 90 quarries and gravel pits, we ensure a reliable supply of high-quality mineral raw materials that form the basis for essential construction activities. In multiple countries across Central, South-Eastern and Eastern Europe – including the Czech Republic, Slovakia, Hungary, Slovenia, Croatia, Romania, Bulgaria, Montenegro and Serbia – and in Austria, we operate a comprehensive network of quarries, gravel pits and recycling plants. Strong technical expertise, innovative know-how and an efficient internal infrastructure enable us to respond quickly and flexibly to our clients’ growing demands.

A close-up of gravel and small stones of various colours, shapes and grain sizes in a pile of material. © Szalontai Zsombor/roxit

Regional differences in our product range

Our product range varies by region. This is due to geological, regulatory and technical conditions. Depending on the location, the type of aggregate (limestone, dolomite, gravel, sand, andesite), grain sizes, recycled content and logistics models vary, aligned with local infrastructure and transport distances. We supply a wide range of materials, including aggregates for asphalt and concrete, sand, gravel, chippings, crushed stone and, in selected countries, hydraulically bound base courses, gabion stone and railway ballast. Specialised services such as drilling and blasting are provided in Austria, the Czech Republic and Poland. Our sites are regionally based, with production located close to areas of demand. This ensures short transport routes, high availability and cost-effective delivery distances even during peak demand periods. At the same time, we also support longer-distance deliveries (e.g. by rail), where required.

Our products

In selected countries, our stone and gravel products cover the full range of mineral building materials – from traditional sand, gravel and crushed stone gradations to hydraulic engineering stone, special grain sizes, project-specific speciality products and recycled materials. In this way, we supply the building construction, civil engineering, traffic route construction, concrete and asphalt industries, as well as infrastructure and hydraulic engineering projects, reliably and standard-compliant.
Two people in protective clothing are placing explosive charges with detonating cords into holes drilled in the rock at a quarry. © Rudi Froese/STRABAG

Drilling and blasting for efficient extraction of raw materials

In selected countries (Austria), we provide drilling and blasting services for the efficient and cost-effective extraction of raw materials used in high-quality aggregate production. Our teams provide support throughout planning, execution and safety management of the extraction process. The scope of our services includes 3D face surveying, profile surveying, the preparation of drilling and blasting plans, as well as vibration and noise measurements. We also carry out borehole trajectory measurements to ensure maximum accuracy and optimal fragmentation. This approach allows us to combine efficient raw material extraction with a maximum level of process reliability and operational safety. 

Aggregates and areas of application

Our aggregates form the basis for a wide range of technical applications in building construction, civil engineering, traffic route construction and hydraulic engineering. The following overview illustrates which product group is typically used in which areas of application.

Product group Typical grain sizes / specifications Areas of application
Sand (asphalt aggregate, concrete aggregate, cable sand) 0/2, 0/4, crushed sand, concrete sand, masonry sand Concrete production, mortar, pipeline construction, backfilling
Gravel in all standard grain sizes (concrete aggregate, filter gravel, etc.) 4/8, 8/16, 16/32 Concrete, drainage systems, road construction, gardening and landscaping
Chippings and crushed stone (concrete aggregate, asphalt aggregate, filter, road grit, railway ballast) 2/4, 4/8, 8/11, 11/16, 16/22, 22/23, 4/8, 8/16, 16/32, 32/63 Base courses, frost protection, road construction, sub-base
Aggregates for concrete (EN 12620) Concrete gravel, concrete chippings, specified gradations Ready-mixed concrete, precast elements, building construction, civil engineering
Aggregates for asphalt (EN 13043) High-grade chippings, asphalt aggregates Asphalt surface courses, binder courses, base courses
Unbound base course materials (grader, unbound lower base course, unbound upper base course, loose material) 0/16, 0/32, 0/45, 0/63 Road construction, utility trenching, infrastructure, sub-base
Hydraulic engineering stones 45/125, 60/300, 300/1000 Riverbank and embankment protection, flood protection, hydraulic engineering
Gabion stone 63/125, 90/150 Gabions, noise barriers, slope stabilisation, landscaping
Drilling and blasting (AT/CZ/PL/NO) - Raw material extraction, quarry development
Recycled building materials (RC) RC aggregate, RC mixes Base courses, sub-base, sustainable infrastructure

This provides our clients with a comprehensive, standard-compliant and regionally available product range that reliably meets the requirements of modern construction, infrastructure and industrial projects – from standard grain sizes to specialised solutions.

Applications of stone and gravel

Stone and gravel are used across nearly all areas of construction. Depending on the project, requirements for application, grain sizes and functions vary considerably. The following overview illustrates the key application areas for and the functions they perform in each of them.

  • 1. Building construction
    A multi-storey building shell with scaffolding and wall elements; several tower cranes are hoisting building materials at a construction site. © Friedberg/stock.adobe.com

    1. Building construction

    Use in residential, office and commercial buildings


    Manufacture of:
    • Concrete (in-situ concrete and ready-mixed concrete)
    • Screeds and mortars
    • Load-bearing and non-load-bearing structural elements
    • Foundations, floor slabs, ceilings
    Typical projects
    • Housing projects ((single-family and multi-family homes)
    • Commercial buildings (warehouses, retail spaces, logistics centres)
    • Public buildings (schools, hospitals, administrative buildings)
  • 2. Civil engineering and infrastructure works
    A track layout with a ballast bed and sleepers in the foreground; in the background, construction machinery and cranes are visible at an infrastructure construction site. © forenna/stock.adobe.com

    2. Civil engineering and infrastructure works

    Load-bearing and shaping layers in the sub-base
    • Anti-freeze measures, base courses and sub-base improvement
    • Utility and cable trenches
    • Dam structures and substructures
    Typical projects
    • Road and motorway construction
    • Rail and tunnel projects
    • Sewer and pipeline construction
    • Industrial and infrastructure sites
  • 3. Traffic route construction
    A roadworks site with a newly laid carriageway, earthworks at the sides and construction machinery along a housing estate in a rural setting. © Mate Beževan/roxit

    3. Traffic route construction

    Upper and lower layers of traffic surfaces
    • Aggregates for asphalt and concrete
    • Gravel and base courses
    • Subsoil stabilisation
    Typical projects
    • Motorways, regional and local roads
    • Airports and runways
    • Operational and logistics areas
    • Railway track systems
  • 4. Hydraulic and civil engineering
    A weir with several concrete piers and open weir gates on a river; electricity pylons and a raised embankment are visible in the background. © David/stock.adobe.com

    4. Hydraulic and civil engineering

    Stability and load transfer
    • Foundations and embankments
    • Riverbank protection, flood protection
    • Hydraulic engineering structures
    Typical projects
    • Flood protection systems
    • Retention basin
    • Power station and dam construction
  • 5. Recycling & circular economy
    A hydraulic excavator is moving and crushing rock on an open-air spoil tip containing loose material. © Rudi Froese/STRABAG

    5. Recycling & circular economy

    Recycling of mineral construction waste

    Processing of:
    • Excavated materials
    • Construction and demolition waste
    Use as:
    • Recycled base courses
    • Sub-base and backfill material
    Typical situations
    • Dismantling and demolition of existing buildings
    • Infrastructure rehabilitation
    • Sustainable construction projects/focus on resource efficiency
  • 6. Project-specific special applications
    A wheel loader is transferring sand at a building materials plant; silos and technical equipment can be seen in the background. © Szalontai Zsombor/roxit

    6. Project-specific special applications

    Customised solutions based on project location and requirement
    • Special grain sizes for specific types of concrete or layers
    • Acceptance of soil and materials including reprocessing
    • Local supply of raw materials to reduce transport distances
    Typical situations
    • Large-scale projects involving large material volumes
    • Time-critical construction phases
    • Projects with high sustainability or certification requirements
A hydraulic excavator is loading rock material into a tipper lorry on a spoil heap containing loose bulk material in a mining or processing area. © Rudi Froese/STRABAG

Recycling and waste management

Our sites operate facilities approved by the relevant authorities for:

  • Acceptance and processing of excavated material
  • Processing of construction and demolition waste (e.g. concrete rubble)
  • Monitoring in accordance with waste management regulations
  • Separate collection of hazardous and non-hazardous waste

These authorisations ensure legally compliant processes and enable closed-loop regional material cycles.

CE marking and factory production control (FPC)

To ensure supply capacity in the building construction, civil engineering and traffic route construction sectors, compliance with standards, along with supporting certifications and documentation, are essential. We meet these requirements at all sites where aggregates are manufactured or supplied. This includes:

These certifications are a fundamental requirement for supplying concrete plants, asphalt plants and infrastructure and traffic route construction projects, and are therefore part of our standard practice. In Poland, we also hold Factory Production Control (FPC) certification under System 2+, which fully meets European regulatory requirements.

A wheel loader bearing an H₂ logo is moving rock in a quarry; rock faces and stockpiled material can be seen in the background. © Stefan Bock/roxit

Sustainability at roxit

Sustainability is an integral part of how we work. We source raw materials responsibly, focus on resource-efficient extraction planning and consistently incorporate recycled building materials into real-world construction and infrastructure projects. At the Kanzelsteinbruch quarry in Gratkorn, roxit is testing a hydrogen-powered wheel loader to further advance low-emission drive technologies for heavy construction machinery. By processing concrete rubble, asphalt rubble and excavated soil, we close regional material loops and reduce the use of primary raw materials. This allows us to support our clients in meeting their ESG, procurement and climate targets, from low-carbon building materials to verifiable recycling rates. For more information about sustainability and how we support you in this respect, see here.

Frequently asked questions (FAQ) about purchasing stone and gravel