Introduction
Pavers are individual manufactured units or cut natural-stone units used to create a paved surface. They are most commonly made from concrete, fired clay brick, or natural stone. Some products also contain recycled aggregate, glass, fly ash, plastic, or rubber.
The material affects appearance and maintenance, but performance also depends on unit thickness, dimensions, density, absorption, abrasion resistance, intended traffic rating, freeze-thaw exposure, and the base and drainage beneath it. The same paver material can perform very differently when installed over different bases or in different climates.
“Permeable paver” is not one material. It describes a pavement system designed to move water through joints or openings and into layers below. A permeable system can use product-specific concrete, clay, plastic, rubber, or other segmental units, but the material and permeability claim must be confirmed for the specific product and engineered system.
What Are the Key Materials Utilized in Pavers?
Concrete pavers are made from a cementitious binder, graded sand and aggregate, and water. Pigments, admixtures, and supplementary cementitious materials may be added for color, workability, or product-specific performance. Brick pavers are generally made from clay or shale that is shaped and fired. Natural-stone pavers are quarried rock that is cut, split, or finished to size rather than a blended manufactured mix.
| Type | Primarily made of | Typical appearance | Strengths | Limitations | Common uses |
|---|---|---|---|---|---|
| Concrete pavers | Cementitious binder, water, and graded aggregates; may include pigments, admixtures, or supplementary cementitious materials | Consistent colors, molded shapes, textured or tumbled finishes | Broad design range; can suit pedestrian or vehicular paving when properly specified | Performance depends on mix, density, absorption, thickness, freeze-thaw resistance, and base installation | Patios, walkways, driveways, plazas |
| Brick pavers | Usually fired clay or shale | Earth tones and natural variation; often rectangular | Color is integral to the fired body; established paving-brick standards exist | Shapes and colors may be more limited; suitability depends on traffic classification and testing | Walkways, patios, streetscapes, traditional designs |
| Natural stone | Quarried rock, such as granite, limestone, sandstone, slate, or marble | Natural grain, bedding, color, texture, and thickness variation | Distinctive appearance and a range of finishes | Porosity, abrasion resistance, slipperiness, frost performance, thickness, and maintenance vary by stone | Patios, paths, terraces, landscape paving |
| Recycled-material products | Product-specific blends that may include recycled plastic, rubber, glass, fly ash, slag, or recycled aggregate | Highly variable; may resemble concrete, rubber tiles, plastic blocks, or composite products | Can divert recovered materials and may provide specialized drainage or flexibility benefits | No single composition or performance profile; durability and approved uses require product-specific evidence | Garden paths, walkways, specialty paving, and some stormwater applications |
Concrete pavers and clay paving brick are separate product types, so do not assume that a specification for one applies to the other. For solid concrete interlocking units, compare manufacturer documentation with the applicable ASTM C936/C936M specification for solid concrete interlocking paving units.
Natural stone is selected from a specific rock type, then quarried and processed into usable pieces. Its mineral composition, finish, thickness, absorption, strength, and past performance all matter when choosing it for an exterior surface.
What Are the Advantages of Using Natural Stone Pavers?
Natural stone offers variation that manufactured units cannot exactly duplicate. Granite, limestone, slate, and sandstone can each have different colors, textures, and weathering characteristics. Some dense stones resist staining and weathering well, while more porous stones can absorb water, oils, salts, or other contaminants and may need sealing or specialized cleaning.
Stone should not automatically be called low-maintenance, stain-resistant, lower-carbon, sustainable, or eco-friendly. It is quarried, cut, shaped, finished, and transported; its environmental profile depends on quarrying, processing energy, waste, transport distance, stone type, service life, and reuse potential. The U.S. Geological Survey explains that dimension stone is natural rock quarried and then cut or finished to specified sizes.
For a driveway or frost-prone site, verify the specific stone’s thickness, absorption, freeze-thaw, abrasion, and chemical-resistance information rather than relying on the material name alone. An experienced installer can also account for natural thickness variation and create a stable, even surface.
How Are Concrete Pavers Manufactured?
Concrete pavers are factory-made units, not simply poured concrete slabs. Manufacturers control the mix, mold, compaction, and curing process to produce repeatable units.
What Are the Essential Steps in Producing Concrete Pavers?
- Material selection: Cementitious materials, sand, aggregate, water, pigments, and admixtures are selected for the intended product.
- Mixing: The ingredients are proportioned and mixed to a consistent, relatively low-moisture concrete mix.
- Molding: The mix is placed into molds that establish the unit’s shape, size, face texture, and joint profile.
- Compacting: Vibration and mechanical pressure consolidate the mix and help create a dense unit.
- Curing: The units are kept under controlled conditions so the cementitious binder can harden and develop the required properties.
- Finishing and quality checks: Units may receive texture or color treatments and are checked for dimensions, appearance, and applicable performance requirements.
Uniform mixing, compaction, and curing are important because poorly controlled production can lead to inconsistent appearance or performance. Fly ash can contribute to later-age strength and other concrete-performance changes, but results depend on the fly-ash characteristics, replacement rate, water-to-cementitious-materials ratio, aggregate grading, admixtures, curing, testing age, and complete mix design.
For buyers, the useful check is not the manufacturing method alone: request the technical data sheet and confirm that the product is intended for the planned pedestrian or vehicle load.
What Are the Environmental Impacts of Different Paver Materials?
Are concrete pavers eco-friendly?
Concrete pavers contain cement, aggregates, and water. Cement production can be a significant part of a concrete product’s environmental impact. Sand and gravel are common mineral materials in paver mixes and pavement bases, but their impact depends on extraction, processing, local scarcity, habitat disturbance, dust, transport distance, and whether recycled or reclaimed aggregate is used.
Recycled aggregate or supplementary cementitious materials may change a mix’s resource profile, but they do not by themselves establish lower overall impact or suitability for a particular use. When comparing products, look for a product-specific environmental product declaration (EPD) or comparable life-cycle information using an equivalent functional basis. Local sourcing can reduce transport distance, but it is only one part of the comparison.
How do natural stone pavers affect the environment?
Natural stone can have a long service life and may be reused, but quarrying and processing can disturb land, create waste, and require energy. Transport can be significant for stone shipped long distances. Ask suppliers about stone origin, finish, waste handling, and whether reclaimed material is available; avoid broad sustainability claims without product-specific evidence.
Can Pavers Be Made from Recycled Materials?
What Types of Recycled Materials Are Used in Pavers?
Yes. Recycled concrete aggregate may replace some virgin aggregate in a concrete mix. Crushed glass may be used in a product-specific aggregate or decorative formulation. Fly ash may replace part of the cementitious material in some concrete products. Other products use recycled plastic or rubber as a principal material or as part of a composite.
These are not interchangeable ingredients, and “recycled-material paver” is not a standardized composition. The recycled-content percentage, binder, additives, structural properties, and approved uses vary by manufacturer. Ask for the technical data sheet, installation instructions, test results, warranty, and a declaration that distinguishes postconsumer content from total recovered content. Seek third-party verification where it is available. The EPA’s guidance on construction products and recycled-content claims likewise recommends obtaining recycled-content percentages from the manufacturer.
How Durable Are Pavers Made from Recycled Materials?
Durability cannot be determined from recycled content alone. It depends on the complete formulation, manufacturing controls, unit design, curing where concrete is involved, and conditions of use. Recycled plastic and rubber products may have different strengths and limits from concrete units.
Match the product’s documented rating to the job. Do not assume that a product suitable for a garden path is suitable for a driveway, deicing salts, or repeated freeze-thaw exposure. For vehicle areas, confirm the traffic classification, dimensions and thickness, compressive or flexural strength, absorption, abrasion resistance, freeze-thaw/deicing durability, base requirements, installation details, and warranty.
Conclusion
Concrete pavers are cement-and-aggregate units; brick pavers are generally fired clay or shale; natural-stone pavers are cut quarried rock; and recycled-material products use manufacturer-specific blends. Select by the actual product data and application, not by material labels alone.
For patios, prioritize appearance, slip behavior, stain resistance, thickness, and drainage. For walkways, also consider surface regularity, accessibility, edge restraint, and freeze-thaw exposure. For driveways, use a product specifically documented for vehicular loading; a patio paver is not automatically driveway-rated. In freeze-thaw climates, prioritize low absorption, documented freeze-thaw and deicing-salt performance, proper drainage, and a well-compacted frost-resistant base.
What documentation should you check?
| Product or application | Useful specification or documentation |
|---|---|
| Solid interlocking concrete pavers | ASTM C936/C936M; verify the current edition, product applicability, and manufacturer compliance. |
| Concrete paving slabs | ASTM C1782/C1782M, where applicable. Larger concrete slabs are not automatically covered by ASTM C936/C936M. |
| Concrete grid paving units | ASTM C1319, where applicable to concrete grid units. |
| Clay paving brick | ASTM C902 for pedestrian and light-traffic clay paving brick; confirm whether another clay-paver specification is required for the planned traffic class. |
| Any paver product | Manufacturer data for dimensions and thickness, traffic classification, compressive or flexural strength, absorption, abrasion, freeze-thaw/deicing durability, installation details, and warranty. |
| Recycled-material products | A manufacturer declaration of postconsumer and total recovered content, preferably with verification, plus product-specific test results and approved-use information. |
| Environmental comparisons | A product-specific EPD or comparable life-cycle information on an equivalent functional basis. |
| Permeable pavement | Manufacturer installation details and project-specific requirements for infiltration, base, underdrain or outlet, overflow, maintenance, and site conditions. |
For stormwater work, choose a complete permeable-pavement design rather than a porous-looking unit alone. The system generally needs joints or openings, open-graded jointing material, open-graded bedding, an aggregate base and subbase reservoir, suitable subgrade infiltration or an underdrain/outlet design, proper grades, and edge restraint. FHWA notes that permeable pavement systems direct water through a permeable surface or segmental-unit joints into an aggregate reservoir.
Groundwater recharge is conditional, not automatic. Confirm subgrade infiltration, groundwater separation, overflow or underdrain provisions, pollutant restrictions, joint aggregate, base design, and required maintenance before selecting a system. Seek a qualified pavement or stormwater designer for major driveways, poor soils, high groundwater, difficult drainage, retaining conditions, regulated drainage work, or engineered stormwater systems.
FAQ
Which paver material is most durable?
There is no single winner for every project. Concrete, clay brick, natural stone, and recycled-material products must be evaluated by the specific product’s testing, exposure conditions, expected load, and installation system. Request dimensions and thickness, strength, absorption, abrasion, freeze-thaw/deicing data, traffic classification, installation details, and warranty.
Which pavers are usually the most affordable?
Pricing is not universal. Concrete pavers may be available across a wide range of price points, but installed cost varies with base preparation, labor, unit thickness, finish, edge restraint, drainage requirements, and local availability. Compare complete installed-system estimates rather than unit prices alone.
Are brick pavers the same as concrete pavers?
No. Brick pavers are generally formed from clay or shale and fired, while concrete pavers are made from a cementitious mix of aggregates and water. They have different appearances, manufacturing methods, and applicable product specifications.
Are permeable pavers made of plastic?
Some permeable products use plastic, but plastic is not required. Permeability comes from a documented, assembled pavement system: joints or openings, suitable jointing material, open-graded bedding and base layers, drainage design, and maintenance. Confirm the material and system design for the specific product.
What should I verify before buying recycled-material pavers?
Check the exact composition; postconsumer and total recovered-content percentages; intended use; dimensions and thickness; strength, absorption, abrasion, and freeze-thaw/deicing test data where relevant; installation requirements; climate limitations; and warranty. Recycled content does not prove suitability for vehicle traffic or freeze-thaw exposure.