blog-banner

Are you a contractor?

Join our network and attract real clients!

Table of Contents

The Benefits and Uses of Recycled Concrete

The Benefits and Uses of Recycled Concrete

Interior renovationsThe Benefits and Uses of Recycled Concrete

Did you know that concrete could be recycled? Well, yes siree Bob! Concrete recycling is a technique used to salvage concrete waste. It’s an alternative to disposing of it in landfills that happens to be both cost-effective and eco-friendly. So, let’s zero in on concrete recycling, a practice that’s still, to this day, little known in Canada.

Recycled Concrete: What Is it Exactly?

recycled concrete

Source: Canva

Globally speaking, concrete is one of the most exploited materials due to its notable strength and its use in almost all infrastructures. However, its environmental impact is highly criticized. The Global Concrete and Cement Association (GCCA) states that said material is responsible for 7% of the planet’s CO2 emissions. Luckily, concrete’s environmental impact can be reduced by recycling it instead of letting it go to waste. As such, a whole series of techniques are used, thereby salvaging inert materials produced by concrete. In other words, concrete is recycled and reused on new worksites. 

Recycled concrete offers to same properties as traditional concrete. It’s just as resistant, easy to work, as well as viscous enough. In terms of quality, it doesn’t fall short of natural concrete aggregate. However, note that recycled concrete is limited to a few fields of use, and can’t be used on all worksites. It can be used on construction projects requiring a tensile strength of C30/37. Concrete grades with a lower tensile strength may be used during freeze cycles. 

There are two types of recycled concrete:

Concrete issued from construction waste

This includes waste from precast plants or ready-to-use concrete. The waste in this category comes in a variety of configurations: fresh concrete waste, cured concrete waste, leftover manufacturing waste, or worksite scraps. It can either make its way back to precast plants (as it’s done with fresh concrete) or be salvaged in crushing screening plants. 

Concrete issued from demolition waste

Here too, concrete residue is recycled in crushing screening plants. The thin part of concrete is typically used to manufacture binders. The recycling process can result in new aggregates that can be used to manufacture new concrete. And, as a matter of fact, said aggregates may be employed to replace naturally occurring gravel and sand.

How Is Recycled Concrete Made?

recycled concrete

Source: Canva

Salvaging concrete waste is a process that’s relatively simple and done in 3 basic steps:

1st step: Sorting

The first step, prior to recycling concrete, is to proceed by sorting the concrete waste to separate it from other materials. This is done with a special type of sifter found in a wheel loader’s bucket to sort concrete residue from other waste materials (pieces of wood, metal bars, or plastic films). 

Note: Sorting materials is a crucial step in concrete recycling. It’s done on two levels: first during the deconstruction of infrastructures, then when the resulting residue is sorted in crushing plants. 

2nd step: Crushing

After the residue is sorted, next comes the recycling stage, which is the crushing part of it. The materials are first lightly ground with a hydraulic chisel. Then, the pieces are reduced to smaller fragments in a crusher, to obtain a grain size of 60 millimetres. Next up is the screening step, which consists of sorting the ground materials based on their grain size. 

3rd step: Dusting

Lastly, the dusting phase is typically done by wet processing. And there you have, ready-to-use recycled concrete

Using Recycled Aggregates or Crushed Concrete

recycled concrete

Source: Canva

Recycled concrete can be used for many different purposes in the construction industry. In fact, it can be used to:

  • build roadway foundations;

  • build sidewalks;

  • backfill pipe trenches;

  • manufacture recycled concrete aggregates;

  • make landscaping construction materials;

  • rubblize concrete, which consists of converting old concrete to make a base course;

  • manufacture pavers, pots, benches, etc. 

Recycled concrete can help minimize rainwater runoff.

What Are the Advantages of Recycled Concrete?

Even though recycled concrete is an uncommon practice in Canada, criticized by some, it’s still an alternative to disposing of it in landfills, and it has numerous benefits:

  • Reduces the use of natural resources (concrete) by close to 30%: This is a massive advantage when recognizing that enormous amounts of aggregates are used every year.

  • Preserve the environment: Reduces mineral waste, mining, and industrial activities linked to the manufacturing of traditional concrete.

  • Reduces transportation costs: Concrete recycling centres are usually located in urban areas near construction zones.

  • Significant time-saver: Recycled concrete can be made and used rather quickly, which significantly reduces construction timelines. 

How to Standardize the Use of Recycled Concrete

Recycled concrete is a material with beneficial properties for the construction industry, but it remains relatively underutilized due to preconceptions. To standardize and further promote its use, the Province of Quebec could consider implementing regulations that mandate the use of concrete made from salvaged aggregates for constructing public buildings, similar to practices in other countries such as Switzerland. 

Get new contracts for your construction or renovation company

RenoQuotes.com can help you get new contracts. We receive new project proposals from clients seeking top-rated and trustworthy renovation professionals like yourself. To get started, simply fill in the form on our homepage (it only takes a few minutes) and receive information regarding potential clients by way of our services.

Dial 1-844 828-1588 to speak with one of our customer service representatives.

Get 3 free quotes for your project!

Submit a project and get 3 free quotes!


Last modified 2023-11-07

List of sources


Get 3 free quotes for your project!

Submit a project and get 3 free quotes!

Looking for something else?


Table of contents


Get 3 free quotes for your project!

Submit a project and get 3 free quotes!

Are you a contractor?

Join our network and receive real leads!

Download the price guide for renovations

We’ll be emailing you the latest market price guide for renovations.



Related articles

The latest industry news, interviews, technologies, and resources.

7 min read

RenoQuotes.com • 27 Nov 2023

The Importance of a Well-Ventilated Home

Most, if not all, homes are well insulated. This insulation exists to keep the heat within the home during the winter months, significantly reducing heat loss. In order to be well insulated, a home should be relatively airtight as to block the outside air from permeating inside.

4 min read

N/A • 07 Nov 2023

Renovating a Condo Kitchen

You may be of the mind that renovation is renovation. When considering the end result, this is the case but when it comes to the process itself, there are many different factors that weigh in. If you’re currently living in a condo and wanting to renovate, you’ll face certain limitations, possibilities and strategies for approaching it. In this article, we’re going to look at a condo kitchen renovation and all of what you should consider when renovating this space. This will help you to avoid unwanted surprises during the process.

4 min read

Cynthia Pigeon • 07 Nov 2023

Why Opt for White Brick Walls?

As far as interior design goes, there are two schools of thought when it comes to white walls. Some love the way their seemingly timeless shade enhances and brightens a room, while others find them rather boring, uninviting even. A clever way to reconcile these opposites is to add texture. Rather than simply painting your walls white, opt for a cladding that'll add volume, patterns, and elegance to any space within your home, like a white brick.

5 min read

RenoQuotes.com • 07 Nov 2023

Laundry Room Design Ideas

While a laundry room is, first and foremost, a space designed for practical use, and its aesthetic aspect is often neglected, one shouldn’t overlook the overall appearance of the often-forgotten space to fine-tune it to the rest of the house. With this in mind, here are décor suggestions for your new laundry room. 

6 min read

RenoQuotes.com • 07 Nov 2023

Everything About Firewood

Are you planning on installing a fireplace or wood-burning stove as a way of heating your home this winter? Perhaps you're worried about power outages and want an alternative source of heat in the event of a blackout. Or maybe you've just been dreaming of romantic getaways at the chalet, bundled up in front of the open flames, hot chocolate in hand…


Looking for a contractor?

Submit a project and get 3 free quotes now!