Crushed Concrete Aggregate

What is Crushed Concrete Aggregate?

Crushed concrete aggregate is produced from reclaimed asphalt and concrete debris from previous construction projects. Instead of going to waste, this material can be repurposed for driveways, walkways, garden beds, and many other applications. Traditionally, when concrete structures such as roads, sidewalks, or parking lots are demolished, the debris is sent to landfills. Because concrete is not biodegradable, it does not break down over time, taking up valuable space and contributing to environmental concerns. At the same time, new concrete is continuously manufactured, repeating an inefficient and unsustainable cycle.

Recycling concrete offers a smarter, more environmentally responsible alternative. By crushing and processing concrete into specific sizes and removing unwanted materials, it can be reused for a wide range of construction and landscaping needs. This process helps reduce landfill waste while conserving natural resources that would otherwise be required to produce new concrete.

4 Crushed Concrete Aggregate Benefits

Below are 4 great benefits of utilizing crushed concrete aggregate for your given project:

1. Affordability: Cost is one of the strongest advantages of crushed concrete aggregate. Thanks to a more efficient production process and reduced resource use, it offers a budget-friendly alternative to new concrete without sacrificing performance.
2. Eco-Friendly: Choosing crushed concrete aggregate is a smart, sustainable decision. It minimizes landfill waste, conserves valuable resources, and significantly reduces the carbon footprint created by new concrete production.
3. Multi-Purpose: Thanks to its versatility, crushed concrete is a go-to solution for homeowners, contractors, and landscapers. It provides a durable, cost-effective option for driveway bases, garden beds, and a variety of construction projects.
4. Looks Nice: If aesthetics are a concern for you, then crushed concrete aggregate offers the perfect compromise. Use it to build a solid foundation, then top it with new materials for a clean, polished finish. When laid down properly, it will give you the look you want while lowering costs and making a more sustainable choice.
   
   

Crushed Concrete Aggregate Properties

Here are some of the key properties of crushed concrete aggregate.

Aggregate Size

Crushed concrete aggregate must be processed to achieve appropriate particle sizes. The method used to crush the concrete—whether mechanical or manual—plays an important role in determining the strength of new concrete, particularly when producing coarse aggregate. Studies indicate that coarse aggregates meeting required standards can be successfully produced. However, recycled fine aggregates tend to be larger and more angular than those typically used in conventional concrete production. As a result, concrete made with crushed concrete aggregate may be harsh and less workable. This issue can be mitigated by incorporating a portion of natural sand into the mix. Recycled aggregates may be used without washing, and the crushing process and particle size directly influence the amount of adhered mortar present on the aggregate.

Aggregate Grading

Aggregate particle grading significantly influences the amount of mixing water needed to achieve proper workability. An increase in fine particles raises the water demand, which can reduce concrete strength unless additional cement is added. The use of recycled sand is generally not recommended due to its high-water absorption, which can lead to increased shrinkage in the concrete.

Water Absorption

Recycled aggregates have a higher water absorption capacity than natural aggregates, making this one of the key characteristics that differentiates them from virgin materials. This increased absorption affects both the fresh and hardened properties of concrete. Due to its high absorption rate and the resulting risk of shrinkage, recycled sand is typically avoided. Additionally, the workability of concrete made with recycled aggregates is directly influenced by the aggregates’ water absorption capacity.

Density

The density of crushed concrete aggregate is smaller than natural aggregate density.

Contaminants

Present of contaminants in recycled aggregate decline strength of concrete produced with this aggregate.

Choosing the Right Crushed Concrete Aggregate

Before ordering crushed concrete aggregate, consider the following factors to help ensure that the material suits your project.

• Aggregate size and grading: Different applications require different particle sizes and distributions. Confirm the available grade and the specifications required for your project.
  
• Project purpose: A driveway base, roadway subbase, trench backfill, and general fill application may each have different material requirements.
  
• Compaction requirements: Determine whether the aggregate must meet specified density or compaction criteria.
  
• Drainage: Consider soil conditions, water movement, and whether the selected material is suitable for the planned drainage design.
  
• Quantity needed: Estimate the area to be covered, the desired compacted depth, and the quantity required, accounting for material characteristics and compaction.
  
• Delivery access: Make sure the delivery vehicle can safely reach the unloading area and that the site has sufficient space for delivery.
  
• Project specifications: For engineered applications, verify that the aggregate meets applicable local requirements and the specifications established by your engineer or contractor.
  

Not every recycled aggregate product is suitable for every construction application. If your project requires certified material, laboratory testing, or a specific gradation, confirm those requirements before ordering.

Why Choose Atlas Roll-Off Corp.?

Atlas Roll-Off Corp. serves residential and commercial customers with roll-off container rentals, disposal services, and construction material delivery. Our Brooklyn location serves customers throughout the greater NYC area, helping contractors and property owners source materials for a variety of projects.

When you contact us about crushed concrete aggregate, we can discuss your intended application, material requirements, delivery location, and order quantity. Our team can help you determine the next steps for obtaining a quote and confirming availability.

Crushed concrete aggregate, also known as recycled concrete aggregate, is made from fragments of concrete structures that have been demolished or rebuilt. The concrete is cleaned to remove dirt and contaminants, then crushed into smaller pieces to create usable aggregate. This process eliminates the need for disposal by repurposing existing concrete as an aggregate source for new concrete and other construction applications.

Looking for crushed concrete aggregate to use on a project? Contact us today.

Contact Atlas

When you reach out, we can provide you with more information about ordering our crushed stones, which includes the aforementioned crushed concrete aggregate, pea gravel, screening aggregate, and backfill.