What can retaining walls be made from?

What Is the Strength of a Interlocking Concrete Block?

Interlocking concrete blocks are an increasingly popular option for certain structures both permanent and temporary, in this blog, we will explore the question ‘what is the strength of a interlocking concrete block?’

PPC Concrete Products is here to provide the answers you may be looking for whilst giving you an insight into the quality concrete options we supply. Our supplies are fit for purpose and generally provide no issues with building regulations, not to mention being safe to use for a variety of construction needs.

The demand for construction is only increasing, on a private and industrial level. Whichever side you fall into, An interlocking concrete block may be an option to help keep your site secure regardless of its shape.

Let us tell you more about the uses and benefits of interlocking concrete blocks below.

Interlocking concrete blocks explained

As building regulations came into being in England, the requirement of having fireproof dwellings was compulsory, this was achieved by subsequent houses being made of stone and brick. Interlocking concrete blocks present a modern alternative.

Interlocking Concrete Blocks are a unique form of pre-cast concrete blocks that are designed to hold together using pre-measured studs and recesses.​ These concrete blocks are built with unique profiles and features, which allow them to fit perfectly into each other.

What are the advantages of interlocking concrete blocks?

Disadvantages of using interlocking concrete blocks

  • Can’t be moved without machinery
  • Can topple over if not placed on level ground

What are interlocking concrete blocks used for?

PPC Concrete Products supply interlocking concrete blocks, we can share with you what they are used for.

  • Material Storage bays
  • Blast walls
  • Salt stores
  • Crash protection
  • Push walls
  • Security barriers
  • Segregation bays i.e recycling centres
  • Retaining walls
  • Industrial buildings
  • Fire breaks
  • Counterweights
  • Roadblocks

Contact us for more information on our interlocking concrete blocks.

What is the strength of a interlocking concrete block?

Can I Build a Retaining Wall by Myself

The strength of an interlocking concrete block is made by certain elements which we will highlight below. It does not require extensive time to set up, and place. It does not require cement to bind the blocks, and it does not require any sort of aftercare to maintain its effectiveness.

These elements combine to create a strength that is paramount in any construction process, and that strength is saving time. Many building projects often go over their schedule due to unforeseen circumstances.

However, those that opt to use interlocking concrete blocks will find that the process will save time compared to traditional brick-and-mortar builds, resulting in you having more time to focus on other key aspects of your build.

How much do interlocking concrete blocks weigh?

In regard to the weight of the blocks, it will vary from size to size, and from the concrete being used. But as an example, 1800 x 600 x 600 concrete block can weigh 1560 kg, this can fluctuate as different types of concrete have different levels of density.

Do lighter blocks have less strength?

Yes, even though a smaller interlocking concrete block will be durable and difficult to break, it won’t have as much strength as its larger counterparts, this is purely due to there being less surface area for impact to travel on.

Interlocking concrete block sizes and styles

Our team at PPC Concrete Products supplies different types of interlocking concrete blocks. Though we have a variety of options when it comes to the interlocking concrete blocks that we make.

The way our blocks are made is by having a casting of the dimensions mentioned below and depending on the option chosen, the cast is then filled with concrete. Each block has a Lifting pin anchor system embedded in the concrete at the point of casting – this is how the blocks are moved once the concrete is set.

After setting, the cast is then removed and the blocks are transported to their destination.

we offer the option for your block to be:

  • Standard Blocks
  • Flat Top Standard Blocks
  • Rock Face Block
  • Rock Face Flat Top Block

To view what these options look like, take a look at our gallery.

 Here are our size options:

  • 300 x 600 x 600
  • 600 x 600 x 600
  • 900 x 600 x 600
  • 1200 x 600 x 600
  • 1500 x 600 x 600
  • 1800 x 600 x 600
  • 400 x 800 x 800
  • 800 x 800 x 800
  • 1200 x 800 x 800
  • 1600 x 800 x 800

Half and thirds of the sizes displayed are also offered with your order if needed.

Why do interlocking concrete blocks interlock?

Interlocking Concrete Blocks vs. Concrete Barriers

The interlocking feature of our blocks is there to facilitate stability and security. These blocks have the potential to be stacked as well. Interlocking them distributes the stability of the overall structure it is helping to create.

A better level of stability means that the structure will be far less likely to overturn or become unbalanced. Interlocking the blocks also reduces the need for mortar.

How long do interlocking concrete blocks last?

Concrete is resilient by nature, it can last for a number of years and beyond without any serious degradation. The only exception to this is if the blocks are in an environment in which they regularly receive forceful impact.

Are interlocking concrete blocks load-bearing?

Yes, interlocking concrete blocks are load-bearing to a degree. What we mean is that our concrete blocks have the ability to be stacked upon each other, so they can definitely tolerate a certain amount of weight, up to a point.

But that being said our interlocking concrete blocks have the potential to have 5 blocks stacked upon each other. Our standard-sized blocks are 60cm in height, with 5 stacked together this would equate to 300cm, which is exactly 9 feet & 10.11 inches high. This height is more than enough for applications such as a retaining wall and so much more.

Stacking our interlocking concrete blocks is made easy, safe and secure through the studs and recesses that are on all of our blocks, once they are connected, they are not loose. The beauty of this simple method is that it eliminates the need for cement to bind the blocks together.

The load-bearing capabilities of our interlocking concrete blocks are maximised at this level, using them for anything more will compromise their effectiveness.

Purchase interlocking concrete blocks today

How do you move Interlocking Concrete Blocks?

As an established supplier all over the UK, PPC Concrete Products is always happy to help, which is why we encourage you to get in touch with any questions you may have or take a look at our FAQ.

In this article, we hope to have answered the question ‘What is the strength of a interlocking concrete block?’, whilst also providing extra information in regard to construction solutions that we offer.

Take a read of our case studies to truly understand how we have provided solutions for business in the past with the use of our interlocking concrete blocks, and ultimately, how we can help you today.

Read our blog page for more insights into our passion, construction.


The Old Gasworks,

Higginshaw Lane,




Opening Hours:

Monday to Friday – 8 AM til 4 PM

Tel: 01706 655245

Email: info@ppcconcreteproducts.co.uk

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