How to Solve the Problem of Hollow Concrete Block Cracking

Hollow concrete blocks are a wonderful engineering innovation that reduce the weight of concrete blocks required to build structures with little impact on the structural integrity. However when the integrity of these hollow blocks is compromised, the repercussions can be manifold. We’ll explore the reasons and the impact of hollow block cracking below so you can avoid these mistakes while ensuring your blocks are perfect every time!?

Why is Hollow Block Cracking a Problem?

Cracked hollow concrete blocks can pose a serious threat to the overall integrity of structures built using these blocks. Cracks form points of stress which can threaten the load bearing capacity of the entire structure.?

Not only that, cracks can also allow moisture to seep in and damage other blocks that are otherwise sound.?

As a result of the above, cracked hollow concrete blocks can pose a risk to the safety of those in structures built using these blocks while also significantly increasing costs in the form of extra maintenance and repairs. These costs can be prohibitively expensive if the problem is detected too late.?

What are Some Reasons that Hollow Concrete Blocks Crack?

Cracking can occur due to the following reasons:

1. Low-quality cement or improper mix ratios
2. Poor vibration transmission or mould fitting problems in the manufacturing process?
3. Lack of adequate curing leading to weak blocks
4. Exceeding the weight capacity of hollow blocks
5. Expansion and contraction due to environmental temperature changes
6. Poor soil conditions or uneven settlement of foundation

For an in-depth review of the reasons, see here.?

How can Hollow Block Cracking be Prevented?

1. Use high quality materials and maintain the recommended ratios
2. Use good quality manufacturing equipment and schedule regular maintenance and checks. Our RHINO Fabrico pallets are an excellent example!
3. Ensure concrete blocks are cured adequately (at least 7-14 days)
4. Maintain good construction practises like the ones here.

If you would like to know more about the topic, you can read our blog or reach out to me via LinkedIn.