What Are Concrete And Aggregate? Uses, Benefits & Suppliers

Picture a driveway that gleams under the Perth sun, its surface a perfect marriage of strength and style. At the heart of that finish are concrete and aggregate – the building blocks behind every durable driveway, pool surround or alfresco area. For homeowners and builders in Perth, choosing the right materials is about more than practicality; it’s about creating outdoor spaces that withstand the elements while making a designer statement.

This guide will explain what we mean by concrete and aggregate, explore how different mixes and aggregates influence performance and appearance, and outline the benefits you can expect from each option. You’ll also get an overview of sustainability considerations, national standards and regulations, plus a curated list of trusted local suppliers to help turn your vision into reality.

By the end of this article, you’ll know how to match the ideal concrete mix and aggregate type to your project, ensuring every finish delivers lasting quality, visual appeal and real value for your home.

What Is Aggregate and Why Is It Essential in Construction?

Aggregate refers to the inert, granular materials—such as sand, gravel and crushed rock—that form the backbone of concrete and many other construction applications. By acting as a filler, aggregate not only provides volume at a lower cost than cement but also influences the strength, durability and workability of the finished product. Whether you’re laying a driveway, building a pathway or designing a decorative pool surround, understanding aggregate is the first step towards a long-lasting, high-performance surface.

Defining Aggregate: Coarse and Fine

Aggregate comes in two main categories:

  • Coarse aggregate: Larger particles, typically 5–20 mm in size, made up of gravel, crushed stone or recycled concrete. Coarse aggregate delivers bulk and helps control shrinkage and cracking.
  • Fine aggregate: Particles smaller than 5 mm, usually natural or manufactured sand. Fine aggregate fills voids between coarse particles and contributes to the concrete’s workability.

Choosing the right balance of coarse and fine aggregate ensures a well-graded mix that packs tightly, minimises voids and provides a uniform texture.

Role of Aggregate in Concrete Mix

Aggregate does much more than simply occupy space in a concrete mix:

  • Bulk and volume: By making up around 60–75% of a concrete mix by volume, aggregate keeps material costs down.
  • Cement reduction: Less cement means lower costs and reduced carbon emissions, while still achieving the desired strength.
  • Workability: The shape and grading of aggregates affect how easily fresh concrete can be placed and finished. Rounded grains yield a more fluid mix, whereas angular particles improve bond strength.
  • Compressive strength and durability: Well-selected aggregates contribute to the concrete’s ability to bear loads and resist wear, weathering and chemical attack.

Types of Source Materials for Aggregate

Aggregates can originate from a variety of sources:

  • Natural aggregates: Quarry-mined rock such as granite, limestone or river gravel.
  • Manufactured aggregates: By-products of industrial processes, including blast furnace slag or crushed brick.
  • Recycled aggregates: Crushed concrete or masonry reclaimed from demolition sites.

For a deeper look at how recycled and natural aggregates compare, you might explore Moreton Bay Recycling’s article on What Are Concrete Aggregates.

Understanding the Composition and Purpose of Concrete

Concrete is more than a simple mix of stone and water. It’s a finely tuned blend of materials that combines strength, durability and versatility. By adjusting each ingredient and the way they’re combined, you can create concretes tailored to everything from a basic footpath to a decorative pool surround. Below, we break down the core components, outline how different mix methods and strengths suit different jobs, and explore the additives that let you control setting times and performance.

Components of Concrete: Cement, Water, Aggregates, Admixtures

A standard concrete mix comprises four key ingredients:

  • Cement: The binding agent, usually Portland cement, makes up around 10–15% of the mix by volume. When water is added, it hydrates the cement particles and forms the glue that holds everything together.
  • Water: Essential for hydrating cement and achieving workability. Typical water–cement ratios (w/c ratio) range from 0.4 to 0.6, with lower ratios giving higher strength but less flow. For example:
    w/c ratio = weight of water / weight of cement
  • Aggregates: Roughly 60–75% of the volume. A combination of coarse and fine aggregates fills space, reduces shrinkage and contributes to compressive strength.
  • Admixtures: Chemical or mineral additives that enhance properties. Although they make up only 1–2% of the mix by weight, admixtures can dramatically alter performance.

Managing the water–cement ratio is crucial. Too much water weakens the final concrete, while too little leads to a stiff, hard-to-place mix. Striking the right balance determines both the strength and the workability you need on site.

Mixing Processes and Concrete Grades

How you combine these components affects quality and convenience. There are two common approaches:

  • On-site mixing: Suited to small jobs, it uses portable mixers or wheelbarrow batches. While flexible, it can lead to inconsistencies in strength and finish if the proportions aren’t carefully measured.
  • Ready-mix delivery: A concrete plant batches precise amounts of cement, water, aggregates and admixtures before pumping the mix straight to your site. This guarantees uniformity, higher quality control and the ability to order specific grades on demand.

Concrete grades indicate the compressive strength after 28 days, measured in megapascals (MPa). Common grades include:

  • 20 MPa: Footpaths, small slabs and non-structural elements.
  • 25 MPa: General-purpose slabs, light-duty driveways and patios.
  • 32 MPa: Standard for residential driveways and pool surrounds, offering extra load capacity and durability.

Choosing the right grade ensures your surface can handle expected loads, from garden furniture to cars and beyond.

Common Additives and Their Effects

Admixtures allow you to fine-tune how concrete behaves before, during and after it sets:

  • Plasticisers (water reducers): Improve flow without adding extra water, making placement easier in tight or complex formwork.
  • Retarders and accelerators: Control setting time. Retarders keep concrete workable in hot conditions or when delivery distances are long; accelerators speed up strength gain in cooler weather.
  • Air-entraining agents: Introduce microscopic air bubbles that boost freeze-thaw resistance and reduce scaling in exposed environments.

By selecting the right admixture package, you can adapt your concrete to Perth’s climate, project timelines and performance demands, ensuring every pour strikes the perfect balance between ease of use and long-term resilience.

The Symbiotic Relationship Between Aggregate and Concrete

Concrete and aggregate are inseparable partners. While cement paste binds everything together, it’s the aggregate that defines much of concrete’s performance and appearance. Together, they form a composite material that can be tuned for strength, durability and even aesthetics. In this section, we explore how the choice and proportion of aggregate shape the final concrete and why getting this balance right makes all the difference on your project.

How Aggregate Influences Concrete Strength and Durability

The physical characteristics of aggregate—its size, shape and surface texture—directly affect how well concrete resists loads and weathers over time. Angular, rough-textured particles lock together more effectively, improving compressive strength and reducing the likelihood of cracks. In contrast, smooth, rounded grains make fresh concrete easier to work but can slightly lower its ultimate load-bearing capacity. A well-graded blend of coarse and fine aggregates ensures the concrete matrix is compact, minimises voids and delivers consistent resistance to traffic, temperature changes and chemical exposure.

Proportioning Aggregate in Mix Design

Finding the right mix of cement, sand and gravel is akin to following a precise recipe—small variations can lead to big differences in performance. As a rule of thumb, many residential concrete mixes use volumetric ratios such as:
1 part cement : 2 parts sand : 4 parts gravel
But real-world designs often tweak these proportions, adjusting the fine-to-coarse aggregate ratio to achieve desired workability, finish and strength. Too much sand can increase shrinkage and risk cracking; too much gravel may make the mix harsh to place and finish. Using mix design tables and trial batches on site helps dial in water content, optimise flow and lock in the compressive strength you need for driveways, patios or pool surrounds.

Case Study Example: Exposed Aggregate Finish

One of the clearest illustrations of concrete and aggregate working in harmony is the exposed aggregate finish. By removing the top layer of paste, the natural beauty and texture of the stones become the feature. Choosing the right size, colour and type of aggregate—from granite pebbles to quartz fragments—lets you create a surface that’s both slip-resistant and visually striking. If you want to see this in action, take a look at Terrastone’s exposed aggregate applications for inspiration on how aggregate selection transforms plain concrete into a statement driveway or alfresco area.

Exploring Different Types of Aggregates and Their Uses

Not all aggregates are created equal. Depending on your project—be it a high-traffic driveway, a decorative patio, or a drainage trench—selecting the right aggregate can mean the difference between a surface that lasts decades and one that requires frequent repairs. In this section, we’ll break down the most common aggregate categories, highlight their typical applications and offer pointers on choosing the best material for your needs.

Natural Aggregates: Gravel, Sand, Crushed Stone

Natural aggregates are quarried directly from the earth and include gravel, river sand and crushed rock. They’re prized for their strength, consistency and proven track record in structural applications:

• Gravel (10–20 mm): Ideal for compacted sub-bases under driveways or paths where drainage and load-bearing are crucial.
• Sand (<5 mm): The fine backbone of concrete and mortar mixes. Sharp sand enhances bond strength in paving and brickwork, while softer beach sand suits renders and screeds.
• Crushed stone: Often granite or limestone, this angular material locks together under compaction, making it perfect for high-strength concrete, road bases and heavy-duty footings.

Because they’re predictable in size and mineral composition, natural aggregates deliver reliable compressive strength and minimise shrinkage in your concrete.

Manufactured Aggregates: Slag and Recycled Concrete

Manufactured aggregates are by-products of industrial processes or reclaimed building materials. Two common types are blast furnace slag and recycled concrete:

• Blast furnace slag: A residue from steel production, processed into dense granules. It offers excellent durability in acid-resistant concrete and can improve workability when blended.
• Recycled concrete aggregate (RCA): Crushed debris from demolition sites. Using RCA reduces landfill waste and often costs 20–30% less than quarry rock. It’s suitable for sub-bases, bulk fill and non-structural concrete where virgin materials aren’t strictly required by regulations.

Beyond cost savings, both slag and RCA carry environmental benefits by diverting materials from waste streams and lowering the embodied carbon of new concrete.

Specialty Aggregates: Lightweight and Decorative

Sometimes your project calls for a little extra flair—or a technical solution beyond standard rock and sand:

• Perlite and vermiculite: These expanded minerals trap air, making them excellent for insulating concrete toppings, roof gardens or freeze-thaw resistant mixes.
• Coloured glass and shells: Crushed and tumbled, they bring sparkle and unique texture to polished or exposed aggregate finishes. Perfect for pool surrounds, feature walls or alfresco floors that need a designer touch.
• Lightweight expanded clay or shale: Reduces the overall weight of concrete elements, useful in rooftop terraces or suspended slabs.

By blending these specialty aggregates into your mix, you can address thermal performance, acoustic insulation or pure aesthetics without sacrificing structural integrity.

Selecting Aggregates for Specific Applications

Choosing the right aggregate boils down to a few key factors:

  1. Load requirements: Heavy vehicles demand robust, well-graded coarse aggregates. Residential patios may tolerate finer blends.
  2. Slip resistance: Textured surfaces with larger, angular stones (e.g. 10–14 mm) achieve higher slip ratings—ideal for pool decks and outdoor entertaining areas.
  3. Drainage capacity: Open-graded aggregates (10–20 mm with minimal fines) allow water to pass through freely, perfect for rain gardens and stormwater trenches.
  4. Visual design: Colour harmony between aggregates and your home’s palette can elevate kerb appeal. Consider natural stone hues or decorative shell blends for a bespoke look.

Always consult your project brief and local regulations—some structural concrete works specify maximum moisture absorption and strength classes that limit aggregate choices. By matching the material’s characteristics to site conditions and design goals, you’ll achieve a finish that performs beautifully and endures the test of time.

Different Types of Concrete and Decorative Finishes

Concrete isn’t just grey slabs; it’s a canvas for style and function. From the tried-and-true plain finish to intricate coloured or honed surfaces, each option brings its own advantages in terms of cost, maintenance and curb appeal. Let’s explore the most popular types and how they can transform driveways, patios and pool surrounds into standout features.

Plain Concrete: Features and Applications

Plain concrete offers a classic, smooth grey appearance that’s both understated and versatile. It’s quick to install and demands minimal upkeep—simply sweep or hose down occasionally to keep it looking fresh. This finish is commonly used for:

  • Driveways and garage aprons
  • Footpaths and pathways
  • Outdoor entertaining areas and ground slabs

With its straightforward aesthetic and budget-friendly profile (typically between $85–$135 per m²), plain concrete is a go-to for projects where practicality and longevity are top priorities.

Exposed Aggregate Concrete: Process, Benefits, and Maintenance

Exposed aggregate concrete reveals the natural beauty of stone chips or pebbles, adding texture and depth to outdoor surfaces. The process usually involves:

  1. Pouring and screeding the fresh concrete
  2. Applying a surface retardant to slow the top layer from setting
  3. Washing away the paste after 24–48 hours to expose the aggregate

This finish is slip-resistant, highly durable and available in a spectrum of colours and stone types. To maintain its vibrancy and protect against weathering, a reseal every 3–5 years is recommended, along with routine sweeping and gentle washing. For more on planning and care, see our exposed aggregate considerations.

Polished and Honed Concrete: Interior and Exterior Uses

Polished and honed concrete take the simple slab to the next level with refined surface treatments. Polishing involves grinding the surface to a glossy, mirror-like finish—ideal for contemporary indoor floors, feature walls and sleek patios. Honing, on the other hand, produces a smooth but matte finish that still feels soft underfoot and reduces glare, making it perfect for alfresco settings and pool surrounds.

Both techniques can incorporate coloured aggregates or dyes to create custom patterns and inlays. To explore the full range of decorative possibilities, check out our decorative concrete finishes guide.

Coloured Concrete and Liquid Limestone Options

If you’re after a splash of colour, pigmented concrete and stains offer endless design flexibility. Coloured oxide powders blend directly into the mix for uniform hues, while surface stains add washes of colour and veining after the concrete has cured. Both methods deliver lasting colour without peeling or fading.

Liquid limestone sits between concrete and natural stone, casting a cool-to-touch, non-slip surface ideally suited for pool surrounds and patios. Its fine, cementitious blend can be coloured to match any scheme and provides a silky finish that feels as good as it looks.

Whichever finish you choose, Terrastone’s expertise ensures your surface not only meets but exceeds expectations in durability, aesthetics and maintenance ease.

Key Benefits and Properties of Concrete and Aggregate

Concrete and aggregate combine to create surfaces that not only look good but stand the test of time. From enduring the harsh Perth sun to adapting to chic design trends, these materials offer a host of advantages for both homeowners and builders.

Durability, Strength, and Longevity

Concrete’s reputation for robustness is well earned. A properly mixed and cured slab can last 30–50 years or more, resisting fire, water damage and pests. Aggregate minimises shrinkage and crack propagation, so driveways, patios and pool surrounds maintain their integrity under heavy vehicles, frequent foot traffic and extreme temperature swings.

Aesthetic Versatility for Residential and Commercial Projects

Far from being a one-note grey expanse, concrete can be customised extensively. Stamped patterns emulate brick, slate or cobblestone; border inlays introduce geometric or floral motifs; and aggregate inlays showcase pebbles, quartz or recycled glass for a bespoke finish. Whether you’re aiming for a sleek, minimalist courtyard or a vibrant alfresco entertaining area, the palette of textures and colours makes concrete a designer’s ally.

Cost-effectiveness and Value for Money

Both initial outlay and ongoing costs influence the choice between different concrete finishes. The table below offers a snapshot of typical upfront and maintenance costs per square metre:

FinishUpfront Cost (AUD/m²)Maintenance
Plain Concrete85–135Low – occasional cleaning
Exposed Aggregate100–150Medium – sweep, wash, reseal (3–5 yrs)
Polished / Honed120–200Medium – re-polish (5–7 yrs), seal as needed
Coloured Concrete95–160Medium – clean, re-stain or reseal (4–6 yrs)

Spending a little extra up front often translates to reduced maintenance and higher property value over time. Exposed and polished finishes, for instance, can significantly boost kerb appeal.

Performance Characteristics: Slip Resistance, Thermal Mass, Acoustic Properties

Concrete’s performance goes beyond looks and longevity. Textured surfaces—like exposed aggregate or stamped patterns—can achieve slip resistance ratings up to R11, making them ideal for pool decks and alfresco areas. The material’s high thermal mass helps moderate indoor temperatures by absorbing heat by day and releasing it at night, reducing cooling loads. Additionally, concrete offers sound dampening, smoothing out echoes in open-plan interiors and cutting down noise from busy driveways.

When you choose the right combination of concrete and aggregate, you’re investing in a surface that balances performance with style, delivering real value for your home.

Sustainability in Concrete: Recycled Aggregates and Low-Carbon Solutions

Concrete’s versatility comes with an environmental cost. Cement production alone contributes around 7% of global CO₂ emissions, driven by the energy-intensive processes of clinker manufacture and the chemical reactions that bind concrete. For homeowners and builders in Perth seeking greener options, understanding how to lower embodied carbon and divert waste material is key to more responsible construction.

Environmental Impact of Traditional Concrete Production

Traditional concrete relies heavily on Portland cement, which emits significant CO₂ both from fuel combustion and calcination of limestone. Beyond emissions, large-scale extraction of virgin aggregates disturbs ecosystems and consumes non-renewable resources. In a city like Perth—where sustainability and water conservation are front of mind—minimising the carbon footprint of outdoor finishes makes real sense for communities and the climate alike.

Benefits of Using Recycled Aggregates and SCMs

Recycled aggregates and supplementary cementitious materials (SCMs) offer two clear sustainability wins: cutting waste that would otherwise go to landfill, and reducing the clinker factor in concrete. Research by CSIRO shows that replacing up to 50% of natural aggregates with recycled concrete and substituting 25% of cement with fly ash can trim embodied carbon by as much as 17%. In practice, this means your driveway, patio or pool surround can be both high-performance and lower in embodied emissions—without compromising on strength or durability.

Transportation Considerations for Reducing Carbon Footprint

Even “green” materials can rack up emissions if transported over long distances. Sourcing aggregates and SCMs locally—ideally within 15–25 km of your site—keeps haulage emissions down and supports Western Australian suppliers. Whether it’s recycled concrete from a nearby demolition or fly ash delivered from a regional power station, shorter transport legs make a significant difference in your project’s overall carbon tally.

Innovations and Future Trends in Sustainable Concrete

The quest for lower-carbon concrete has sparked some exciting developments:

  • Carbon-sequestering cements that absorb CO₂ as they cure, effectively turning the material into a long-term carbon sink.
  • Geopolymer binders that replace Portland cement with industrial by-products like fly ash and slag, cutting emissions by up to 80%.
  • 3D-printed formworks and on-site batching technologies that reduce waste, improve accuracy and optimise mix designs for each application.

These innovations are still emerging in Australia, but they point to a future where decorative concrete finishes—driveways, alfresco areas and pool surrounds—can be as kind to the planet as they are stylish and durable.

By choosing recycled aggregates, SCM blends and locally sourced materials, you’re not just investing in a quality finish; you’re contributing to a more sustainable building industry in Perth. At Terrastone, we keep an eye on the latest advances so you can enjoy cutting-edge solutions that balance performance with environmental responsibility.

National Standards and Regulations Governing Concrete and Aggregates in Australia

Concrete and aggregate used in residential and commercial projects across Australia must meet stringent standards to ensure safety, durability and performance. Compliance with the National Construction Code (NCC) and relevant Australian Standards isn’t optional—these rules set the bar for everything from mix strength to reinforcement cover, helping homeowners and builders in Perth avoid costly failures and maintain long-term structural integrity.

Minimum Compressive Strength and Mix Design Requirements

The NCC Volume Two outlines minimum compressive strength values for common applications, measured at 28 days:

  • Footpaths and non-structural slabs: 20 MPa
  • Light-duty driveways and patios: 25 MPa
  • Residential driveways, pool surrounds and structural slabs: 32 MPa

Design mixtures must also comply with AS 1379 (Specification and Supply of Concrete), which prescribes tolerances on cement content, aggregate grading and water–cement ratio. This ensures each batch delivers the specified strength and workability. For detailed code requirements, refer to the National Construction Code.

Reinforcement, Cover Depth, and Durability Classifications

Steel reinforcement must be protected from corrosion and fire by maintaining minimum concrete cover depths according to environmental exposure:

  • Mild exposure (internal or sheltered): 20 mm
  • Moderate exposure (ground floor, external): 40 mm
  • Severe exposure (footpaths, driveways): 50 mm
  • Very severe or marine environments: 75 mm

Exposure classifications—ranging from “Mild” to “Extreme” in AS 3600 (Concrete Structures)—dictate both concrete quality and cover depth. Selecting the right exposure class for your Perth project guards against cracking, spalling and reinforcement corrosion over time.

Compliance, Testing, and Certification for Concrete Suppliers

To guarantee consistency, suppliers must operate under a certified quality management system and submit concrete batches to NATA-accredited testing laboratories. Key points include:

  • Routine slump tests to verify workability.
  • Compressive strength tests (cubes or cylinders) at 7 and 28 days.
  • Sampling frequency, typically one test per 50 m³ of concrete or per batch.
  • Documentation under AS 1379 Quality Specification Requirements, which records mix proportions, test results and any corrective actions.

Working with a tested, certified supplier means your concrete mix—and the aggregates within it—will perform exactly as promised, leaving you free to focus on design and finishing details rather than worrying about long-term durability.

How to Choose the Right Aggregate and Concrete Mix for Your Project

Selecting the perfect combination of aggregate and concrete mix sets the stage for a durable, functional and attractive surface. Whether you’re laying a driveway that must handle cars, crafting a pool surround that stays cool underfoot, or creating an alfresco area that wows, following a clear process will streamline decision-making and ensure the finished result meets your expectations.

Assessing Project Requirements: Load, Location, and Aesthetic Goals

Begin by clarifying what you need from your concrete:

• Traffic loads: Will the surface see light foot traffic, family vehicles or heavier trucks? Residential driveways typically demand a 32 MPa mix with robust coarse aggregate, while pathways may fare well with 20–25 MPa.
• Environmental exposure: Consider sun, rain, pool chemicals and temperature swings. Areas near pools benefit from slip-resistant oversized aggregate blends, whereas sheltered patios might allow smoother finishes.
• Design style: Visual harmony with your home’s palette and landscaping will guide your choice of aggregate colour, size and finish—be it plain grey, exposed stones or polished surfaces.

By ticking off each requirement, you can narrow down the ideal aggregate type (e.g. 10–14 mm for slip resistance or fine sand for a smooth slab) and concrete grade that aligns with both function and flair.

Calculating Quantities and Scheduling Delivery

Accurate ordering prevents delays and waste. Follow these steps:

  1. Measure area and depth: Multiply length × width × desired depth (convert millimetres to metres).
  2. Calculate volume:
    Volume (m³) = Length (m) × Width (m) × Depth (m)
  3. Add ordering buffer: Include an extra 5% to account for spillage, over-excavation or slight form variances.
  4. Coordinate with the supplier: Confirm mix grade, slump requirements and delivery window. Early-morning pours often avoid the peak heat of a Perth afternoon and help maintain workability.

Having precise quantities and a reliable delivery schedule keeps your project on track and your crew productive from set-up through to finishing.

Preparing the Site and Best Practices for Installation

A rock-solid outcome starts long before the concrete arrives:

• Subgrade preparation: Excavate to the required depth, remove organic material and compact soil or sand to at least 95% of its proctor density. Install geotextile fabric or a compacted road base if drainage is critical.
• Formwork and reinforcement: Secure straight, level formwork to maintain the desired shape. Position reinforcement (mesh or rebar) with sufficient cover to prevent corrosion—all in line with AS 3600 specifications.
• Placement and consolidation: Pour the mix in layers, using mechanical vibrators or hand-rodding to expel air pockets and ensure full aggregate embedding.
• Curing and jointing: Prevent rapid moisture loss by misting or covering with plastic sheeting, and apply curing compound if recommended. Saw cut control joints within 18–24 hours (or when the concrete can support a worker) at intervals roughly equal to the slab thickness in millimetres (e.g. 10 mm joints for a 100 mm slab).

Adhering to these site-preparation and installation practices reduces shrinkage cracks, improves surface durability and helps your concrete and aggregate mix perform exactly as intended.

Leading Suppliers of Concrete and Aggregate in Perth, Australia

When it comes to sourcing high-quality concrete and aggregate in Perth, you have options ranging from boutique decorative specialists to big-box DIY stores. Whether you need a tailored finish for a designer driveway or a cost-effective batch of bagged aggregate, these local suppliers combine expertise, product variety and dependable delivery to keep your project on track.

Terrastone Architectural Concrete

Terrastone Architectural Concrete stands out as Perth’s go-to for decorative concrete solutions. With a dedicated project manager—Adam Burvill—as your single point of contact, Terrastone guides you from design through to installation. Their portfolio spans exposed aggregate, honed and polished finishes, coloured concrete and liquid limestone, all backed by rigorous quality control. Visit the Terrastone homepage to explore display centres across Perth and see how they can transform driveways, pool surrounds and alfresco areas into stand-out features.

Limecrete: Exposed Aggregate Specialists

Limecrete brings more than a decade of experience in crafting exposed aggregate surfaces in Perth. Their service offers custom aggregate blends—ranging from classic river pebbles to granite chips—designed to match your home’s style and functional needs. Whether you’re after a slip-resistant pool deck or a statement driveway, Limecrete manages everything from mix design to final seal. Learn more about Limecrete’s exposed aggregate service at https://limecrete.com.au/exposed-aggregate/.

EXCO WA: Local Aggregate Concrete Contractors

EXCO WA specialises in exposed aggregate driveways, paths and patios, delivering a durable finish tailored to Western Australia’s climate. Their team handles site preparation, aggregate selection and finishing techniques, ensuring a consistent look and reliable performance. Drawing on local knowledge and quality materials, EXCO WA helps homeowners achieve a striking balance of texture, colour and longevity. Find out how they can bring your vision to life at https://exposedconcretewa.com.au/.

DIY Options at Bunnings: Bagged Aggregates and Cement Products

For smaller-scale landscaping or home improvement jobs, Bunnings offers a broad range of bagged aggregates, sands and cement mixes. Ideal for garden paths, footings or patch repairs, these off-the-shelf products let DIYers tackle projects at their own pace. With competitive pricing, nationwide stock and click-and-collect convenience, Bunnings is a practical choice for handy homeowners who need materials delivered quickly. Browse the selection at https://www.bunnings.com.au/products/building-hardware/cement-concreting/cement-products/aggregate.

Frequently Asked Questions About Concrete and Aggregate

Got more questions? We’ve rounded up the top queries that homeowners and builders often ask when planning a concrete project. Read on for quick, practical answers to help you make informed decisions.

What Is the Difference Between Aggregate and Concrete?

Aggregate refers to the granular materials—like sand, gravel or crushed rock—that are mixed with cement and water to create concrete. Think of aggregate as the filler that gives concrete its bulk, strength and texture. Concrete, on the other hand, is the composite material you get once those aggregates are bound together by hydrated cement paste. Without aggregate, you’d have a much weaker, more expensive mass of cement; without cement and water, aggregate would stay loose and unusable for construction.

How Long Can a Concrete Surface Last?

With proper design, installation and care, a concrete surface in Perth can easily clock up 30–50 years of service. Factors such as the mix grade (25–32 MPa for driveways and pool surrounds), quality of aggregates, exposure to sun and chemicals, and curing methods all play a part. Decorative finishes like exposed aggregate or polished concrete may need occasional resealing, but the underlying slab will keep performing long after many other materials have shown their age.

Can I Use Recycled Aggregates for My Home Project?

Yes—recycled aggregates (crushed concrete or brick) are a perfectly viable option for many residential uses, including sub-bases, pathways and even some non-structural concrete. They help reduce landfill waste, cut material costs and lower embodied carbon. Just make sure your supplier follows AS 1379 quality requirements and that the recycled material is graded, tested and free of contaminants. If you’re unsure, ask for test certificates or look for NATA-accredited suppliers.

What Maintenance Does an Exposed Aggregate Surface Require?

Exposed aggregate is celebrated for its slip resistance and visual appeal, but its textured finish does trap dust and debris. To keep it looking sharp:

  • Sweep or blow off loose dirt weekly.
  • Gently wash the surface with a low-pressure hose or soft-bristle brush—avoid high-pressure jets that can dislodge stones.
  • Reseal every 3–5 years to protect against staining, UV fade and wear.
    Routine care will preserve both the colour and texture, ensuring your driveway or patio remains a standout feature for years to come.

Bringing It All Together

Concrete and aggregate are more than just building materials—they’re the foundation of durable, beautiful outdoor spaces that endure the Perth climate. By understanding how coarse and fine aggregates influence strength, workability and appearance, you can tailor your mix to suit everything from a family driveway to a slip-resistant pool surround. Pairing the right concrete grade, additives and decorative finish ensures your project delivers both function and flair.

Sustainability doesn’t have to take a back seat. Incorporating recycled aggregates and supplementary cementitious materials (SCMs) can cut embodied carbon without compromising performance. Sourcing materials locally—ideally within a 15–25 km radius—further reduces transport emissions and supports Western Australian suppliers. Combine this with compliance to the NCC and Australian Standards for mix design, reinforcement cover and testing, and you’ll have a surface that’s as responsible as it is resilient.

Whether you’re drawn to the clean lines of a honed finish, the sparkle of exposed aggregate or the timeless appeal of coloured concrete, Perth offers a wealth of specialist suppliers ready to bring your vision to life. From Terrastone’s full-service decorative expertise to Limecrete’s custom aggregate blends, EXCO WA’s local know-how and the DIY convenience of Bunnings, you’ve got all the options you need to make an informed choice.

Ready to transform your driveway, alfresco area or pool surround? Explore Terrastone Architectural Concrete for tailored advice, dedicated project management and a stunning range of decorative concrete solutions that will stand the test of time.

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