When we think of modern construction, specifically concrete mixers, recycled materials are not the first to come to mind. According to World Green Building Council, nearly 60% of the world’s population will live in urban areas by the year 2030. This calls into question the sustainability of the way we build, since the built environment will affect its residents.

 

As environmental concerns grow, we look toward greener building practices and materials, considering the long-term effects they might have on the environment. Now, how does any of this relate to concrete and concrete mixers? Well, concrete mixers are essential equipment used in building projects. They directly impact the sustainable nature of each project and can either help reduce waste or contribute to it.

 

In modern days, we have started looking at recycled aggregates and industrial by-products, a potential method of decreasing carbon footprint and wastage. Certain recycled or by-products can be added to concrete mixes to reduce reliance on natural resources and lower production costs. In this article, we will discuss practical applications as well as trends related to recycled materials in cement or concrete mixers.

 

Environmental Impact Reduction: Using Recycled Materials In Concrete Mixers

 

According to the National Institutes of Health, the construction sector accounts for 30% of total waste produced globally. This waste is the result of construction by-products, waste, as well as demolition waste, which are sent to landfill sites.

 

A large amount of this waste is concrete, which we now know can be recycled and reused. Using recycled concrete aggregate avoids using new resources and decreases the need for new resource extraction. In the long run, this reduces environmental degradation, aligning with sustainable sourcing principles. Surprisingly, reusing concrete as an aggregate is not only sustainable but also extends a building’s life when mixed into concrete structures.

 

Cost Savings And Resource Efficiency

 

Companies can reduce transportation costs and raw material expenses by making use of recycled materials. The process requires crushing existing concrete and reworking it into concrete mixes, reducing the demand for new aggregates. This means businesses will pay less for procuring and hauling materials. As any business owner already knows, any savings can impact the project’s budget, and this method has its positive effects, supporting green building practices. Another factor to consider is the tax rebates many regions and counties offer companies for green building practices or incentives.

 

Improved Performance And Durability

 

Recycled aggregates often possess a rough texture that enhances bonding within concrete mixes. This leads to strong and durable materials suitable for different ground conditions, such as wet or soft soils. Studies have shown that up to 50% replacement of virgin aggregates with recycled ones does not compromise strength or durability. On the contrary, such mixes can perform comparably to traditional concrete if properly managed in mixing processes. BS Power’s cement mixers can handle these alternative materials, maintaining uniform mixing and ensuring your construction meets exacting standards.

 

 

Concrete Aggregate: Recycled Materials In Concrete Mixing

 

As mentioned, the use of recycled concrete aggregates (RCA) forms the foundation of sustainable concrete mixes. Instead of sending all demolished waste to the landfill, concrete is crushed and used as aggregates, adding to concrete mixers. Businesses that make use of RCA in their concrete mixers are conserving natural gravel and sand resources. BS Powers’s concrete mixers can be used to blend concrete which contains RCA.

 

Integrating Supplementary Cementitious Materials

 

Supplementary cementitious materials (SCMs) such as fly ash, slag, and silica fume are industrial by-products which can be repurposed in concrete mixing. SCMs replace a portion of concrete, which is a major contributor to CO2 emissions during production. Businesses that add SCMs into mixtures reduce the carbon footprint of concrete manufacturing. A BS Power cement mixer evenly distributes SCMs through precise dosing and mixing. This produces sustainable concrete mixes, creating workable material, strong enough for structural integrity.

 

Water Recycling And Waste Reduction

 

Water is an important resource used within the mixing process, so the reduction in its wastage directly affects sustainability practices. Businesses should consider the systems they use during mixing and possibly move over to closed-loop water systems that recover and reuse water in the mixing process, reducing water wastage and the need for new water. This will decrease your leftover waste while producing the exact amount needed to produce the mix. This can prevent disposal issues and maintain responsible construction practices.

 

At BS Power, our concrete mixers accommodate many material types and volumes, allowing contractors to easily mix traditional and recycled aggregates. Drum mixers are flexible for on-site concrete production and allow opportunity for you to tailor mixtures as needed.

 

Concrete Mixes & Quality Control

 

BS Power’s mixers are built to improve mix accuracy and consistency on every use. Make use of automated batching systems to reduce the chances of human error during material measurement. This method guarantees each batch meets specifications. The adjustment capabilities of the machines will maintain product quality while minimising waste. These innovative machines can contribute to your building projects, controlling costs.

 

Support For Circular Economy Practices

 

We support circular economy practices by providing our clients with the best machinery in the market, which can facilitate the use of recycled materials in concrete mixing. This will help contractors reduce material waste while decreasing their need for virgin materials in production. The lower greenhouse gas emissions, possible through efficient operation, also contribute to greener building trends and industry practices.

 

 

Types Of Recycled Materials You Can Add To Concrete Mixes

 

As you prepare for your next project that requires concrete mix, consider the materials you will need to use. Which materials work best? You can directly impact sustainability while reducing costs. Here is a breakdown of the different types of recycled materials you can incorporate in your concrete mixes for projects like creating driveways.

 

Recycled Concrete Aggregate (RCA) For Concrete Mixes

 

Crushed concrete can be made from demolished roads or foundations. This crushed substance can be used as a recycled concrete aggregate. It replaces natural coarse aggregate like gravel or crushed stone in your concrete mix, which we know can be expensive. Using RCA is common and accepted in many residential concrete driveways.

 

Domestic driveways without reinforcement might even allow for 100% replacement of coarse aggregate with RCA, as long as quality standards are maintained. BS Power cement mixers blend RCA evenly into your mix to maintain consistency despite using recycled material. This substitution decreases extraction demand on natural stone quarries and cuts down landfill waste from demolished concrete.​ It’s really a win-win situation.

 

Fly Ash And Ground-Granulated Blast-Furnace Slag (GGBS) As Cement Replacements

 

Okay, crushed concrete is one thing, but what is Fly ash and GGBS?  Fly ash is a fine powdery residue, usually a byproduct from coal power plants. Its composition is mainly a mix of iron oxides and silica. This byproduct is a good substitute for cement. Ground granulated blast furnace slag, commonly known by its acronym GGBS, is a granulated slag created when slag from blast furnaces cools quickly. Its primary composition is calcium, silicon and aluminium oxides.

 

These industrial by-products replace a portion of the Portland cement binder in concrete mixes. They lower the carbon footprint because cement production releases high CO2 emissions. Incorporating these supplementary cementitious materials will improve the long-term durability of your build and help concrete resist chemical attack and cracking. Your BS Power cement mixer can efficiently blend fly ash or GGBS for a uniform mix.

 

Recycled Crushed Glass For Fine Aggregate Replacement

 

Cleaned, crushed glass or glass sand can replace fine aggregate (sand) in concrete. This has been done for many years, as it enhances concrete workability. The process requires careful processing to prevent chemical reactions that lead to cracking. BS Power cement mixers can mix glass sand, keeping the mixture stable and workable. Using recycled glass in concrete turns waste into a useful component, diverting glass from landfills.​

 

Crumb Rubber For Lightweight Concrete

 

Crumb rubber made from shredded tyres acts as a partial substitute for coarse aggregate, creating lighter concrete with sound and thermal insulation benefits. Such concrete suits non-structural uses, for example, driveways with less loading demand. BS Power mixers can handle crumb rubber mixtures, tumbling the materials for even dispersion. This eco-conscious material reduces landfill tyre waste and enhances insulation in your concrete driveway.​

 

Recycled Plastic As Aggregate Substitute

 

Shredded recycled plastic substitutes aggregate mainly for non-structural applications, improving thermal and acoustic insulation, though reducing compressive strength. Use this material if you prioritise insulation and sustainability over raw strength. BS Power’s versatile cement mixers accommodate these variations, allowing you to mix sustainable plastic aggregate blends efficiently.​

 

Crushed Concrete And Brick As Base or Sub-base Material For Driveways

 

Recycled crushed concrete and brick rubble from construction or demolition make a durable and economical base layer beneath your driveway’s concrete surface. This sub-base provides structural stability while improving drainage, preventing water collection beneath your driveway. Choosing these recycled materials lowers costs and reduces raw material extraction. BS Power assists with mixers designed to incorporate these aggregates efficiently for consistent concrete preparation over the base layer.​

 

Recycled Asphalt In Driveway Bases

 

Reclaimed asphalt pavement reuses old asphalt in new mixtures or as an unbound base for driveways. It’s durable and cheaper compared to virgin gravel materials. Your BS Power mixers support accurate mixing ratios for asphalt blends that perform well under driveway traffic. This option recycles asphalt waste and lowers demand for fresh gravel extraction.​

 

You can further sustainability efforts by adding recycled materials to your driveway or project foundations. That said, when using recycled components in your mixing, quality control is very important. The quality will determine the concrete’s longevity and strength.

 

 

BS Power: Your One-Stop Solution For Recycled Concrete Mixing

 

Embracing recycled materials in cement mixing is a sound strategy to advance eco-friendly construction objectives. BS Power concrete and cement mixers are ideal tools to maximise resource efficiency and reduce environmental impact. It is also ideal to maintain concrete quality while cutting costs through the utilisation of recycled concrete aggregates and supplementary cementitious materials. By making use of these byproducts or otherwise wasted materials, you support conservation efforts.

 

Efficient batching and water recycling systems will complement these practices, contributing to greener buildings and infrastructure. Select BS Power cement mixers for your next building project and respect natural resources without compromise. For more information on concrete and cement mixers, visit our website or contact one of our experts for professional guidance.