The use of recycled aggregates in sustainable construction
Did you know that the construction industry accounts for around one-third of the world’s waste, and contributes to at least 40% of global carbon dioxide emissions? In light of these shocking statistics, there’s never been a more important time to rethink how we build, and what we build with. Enter recycled aggregates: a key component in sustainable construction.
In this blog, we delve into all things recycled aggregates, and explore how they are contributing to a more sustainable construction industry.
What are recycled aggregates?
Recycled aggregates are materials recovered from construction, demolition, and excavation waste. Crushed concrete, brick, asphalt, and a whole host of other inert waste materials are processed to produce recycled aggregates that can be reused time and again. Instead of ending up in landfill and generating harmful greenhouse gas emissions, these materials are screened, graded, and repurposed for future construction sector applications.
From sub-base layers in roads and driveways to pipe bedding and bulk fill, recycled aggregates offer a practical and environmentally friendly alternative to traditional materials, without sacrificing strength or reliability.
Where can recycled aggregates be used?
Whether you’re working on a large-scale civil engineering project or a smaller construction build, recycled aggregates can be used in just about every stage of the construction process. These materials are suitable for a wide variety of applications, including:
- Road construction and repair
- Pavements and driveways
- Foundations and sub-bases
- Landscaping and drainage systems
- General bulk fills
If you’re new to the world of aggregates, you might also find our guide on ‘what are hardcore materials and what are they used for?’ helpful.
Why use recycled aggregates in construction?
The use of recycled aggregates in construction brings with it a whole host of benefits – not just for the environment, but also for your wallet. Some of the top benefits include:
Reduced environmental impact
The extraction and transportation of virgin materials is taking its toll on our planet. By reusing materials that are already in circulation, recycled aggregates help to conserve natural resources, reduce carbon emissions, and limit the environmental damage caused by quarrying.
Cost savings without compromise
Recycled aggregates often come at a lower price point than their virgin counterparts, resulting in lower material costs overall. And thanks to advances in recycling and screening technology, recycled aggregates offer the same level of performance and durability as traditional materials, making them a cost-effective solution for all manner of construction projects.
Supports sustainable building credentials
If you’re seeking to obtain sustainable building credentials like BREEAM or LEED, using recycled aggregates during the construction process can contribute positively to your overall score. Many developers and contractors are now seeking to evidence their commitment to sustainable construction practices, and using recycled aggregates is one of the ways to do just that – along with adopting a zero waste approach.
Discover McCarthy Marland’s recycled aggregate services
At McCarthy Marland, we supply a wide range of high-quality recycled aggregate products that meet the stringent standards of modern construction. These include:
- 20mm Ballast – a combination of pre-washed gravel and coarse sharp sand that is perfect for mixing concrete.
- Pipe bedding and shingle – primarily used for laying pipes in the ground by ensuring even pressure to avoid pipe leaks.
- Limestone sub base – frequently used as a sub-base for roads, car parks, driveways, walkways, and other building bases.
- Sharp sand – mainly used for laying bedding and paving stones, but can also be mixed with other aggregates or hydraulic lime to produce a strong concrete or lime mortar.
- Recycled soil – a popular option for gardeners, landscapers, and builders who require soil to aid with earthworks.
- Decorative Cotswold chippings – a natural gravel that is formed from crushed limestone, often used as a finishing product for landscaping and exterior domestic refurbishment projects.
- Recycled hardcore materials – offers a well-compacted base that provides reassurance for builders when infilling upper layers.
- Recycled concrete aggregates – a combination of reprocessed construction materials such as crushed stone, gravel, and asphalt.
We take great care in the processing and quality control of all our recycled aggregates, ensuring they’re fit for purpose and safe for use in construction. Our aggregate recycling operations are fully licensed and environmentally responsible, so you can rest assured that your building materials are as sustainable as possible.