Concrete Recycling – Cracked Driveway Re-Use

concrete recycling

Concrete driveways have been considered to be required additions to any housing project. Concrete offers numerous benefits when compared to other paving materials. One of the best benefits offered by concrete is its longevity. It takes decades before one requires redoing the concrete driveway.

If you are looking into redoing your concrete driveway, one of the best ways to save on the cost is by recycling concrete. The recycling process is relatively easy. It involves the process of breaking the concrete from your driveway, removing it and crushing it.

The benefits of recycling concrete

According to statistics, construction and demolition waste amount to 25% of the national total solid waste. Concrete waste makes up the largest percentage of concrete and demolition waste. With concrete recycling, these numbers can greatly reduce.

Here are the benefits associated with concrete recycling:

There are several environmental and economic benefits of recycling concrete. They include:

  • Reduction of tippage and related freight charges
  • Recycled concrete is cheaper than newly mined aggregate
  • Reduced landfill space requirements to dispose of concrete debris
  • Reduction in the need for gravel mining since the concrete recycled can be used as gravel.

Ways recycled concrete can be used

There are several ways through which recycled concrete can be used:

As aggregate base

Aggregate can be used as the foundation for roadway pavement. It is used as the layer that forms a structural foundation for paving projects. This means that your driveway can be reconstructed using the aggregate from the demolished driveway as the foundation for the new project.

Ready to mix concrete

The recycled concrete can be used as a substitute for virgin aggregate. This can be used in the building of residential slabs and foundations, construction of residential streets and alleys, concrete driveways, as well as foundations for commercial building constructions.

Stabilization of soil

This is done by incorporating recycled concrete, fly ash or lime into subgrade material that is of marginal quality. This enhances the subgrade’s load baring capacity. This process changes the subgrade’s water susceptibility which in turn stabilizes the soil or the subgrade.

Pipe bedding

Recycling concrete provides material for building firm foundation beds where underground utilities can be laid.

Landscape material

Recycled, sized concrete rubble can be used in different landscaping settings. It can be used as attractive architectural support that offers varying structure colors and textures. Recycled concrete rubble can also be used as stacked/boulder rock walls, erosion structure, underpass abutment structure and also as water feature.

The process of concrete recycling

The process of recycling involves crushing, pre-sizing, sorting, screening and elimination of contamination.  The idea is to create clean concrete material that can later be re-sized and used based on need.

Large impactors, cones and primary jaws are used to reduce the concrete debris into smaller sizes. Further processing is done to create a finer product. Foreign particles and dirt are removed by the use of scalping screens and deck screens.

While it is still a new phenomenon, concrete recycling is expected to grow in importance over the coming years. Good quality Aggregate supplies are becoming less accessible in most regions and there is an increase in the need for waste concrete in landfills to be made useful.

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