What is Fly Ash Bricks vs Concrete Blocks

Fly ash bricks and concrete blocks are both commonly used in construction, but they have different properties and advantages.

Fly Ash Bricks:

  1. Environmental Friendliness: Fly ash bricks are made from industrial waste products, primarily fly ash, making them a sustainable choice that helps reduce waste and pollution.

  2. Lightweight: These bricks are lighter than traditional bricks and concrete blocks, which can make handling and transportation easier. This can also reduce the load on a building’s foundation.

  3. Low Water Absorption: Fly ash bricks absorb less water than concrete blocks, which can help prevent dampness and related issues in buildings.

  4. Uniform Size: They are manufactured in uniform shapes and sizes, which can lead to less mortar use in construction and a more aesthetically pleasing result.

  5. Thermal Insulation: Fly ash bricks provide better thermal insulation than conventional bricks and concrete blocks, helping to keep buildings cool in summer and warm in winter.

Concrete Blocks:


  1. Strength and Durability: Concrete blocks are known for their high compressive strength and durability. They’re resistant to weathering, which can help to extend the lifespan of buildings.

  2. Variety of Sizes and Shapes: Concrete blocks come in various sizes and shapes, allowing for greater flexibility in design and construction.

  3. Sound Insulation: Concrete blocks provide better sound insulation compared to fly ash bricks, making them an ideal choice for buildings in noisy areas.

  4. Fire Resistance: Concrete blocks are highly fire-resistant, which can contribute to the safety of a building.

In conclusion, the choice between fly ash bricks and concrete blocks depends on the specific requirements of your construction project.



  1. https://en.wikipedia.org/wiki/Fly_ash_brick

  2. https://www.constructionspecifier.com/the-pros-and-cons-of-fly-ash/

  3. https://www.quora.com/What-are-the-pros-and-cons-of-fly-ash-bricks

  4. https://qgreentech.com/difference-between-hollow-concrete-blocks-and-fly-ash-bricks/

  5. https://gharpedia.com/blog/fly-ash-bricks-vs-clay-bricks/

  6. https://www.entrepreneurindia.co/project-and-profile-details/Fly%20Ash%20Bricks%20-%20Manufacturing%20Plant,%20Detailed%20Project%20Report,%20Profile,%20Business%20plan,%20Industry%20Trends,%20Market%20research,%20survey,%20Manufacturing%20Process,%20Machinery,%20Raw%20Materials,%20Feasibility%20study,%20Investment%20opportunities,%20Cost%20and%20Revenue

  7. https://www.superliteblock.com/blog/advantages-of-concrete-blocks/

  8. https://www.architecturaldigest.in/content/concrete-blocks-bricks-homes/#:~:text=Concrete%20blocks%20are%20available%20in,used%20to%20construct%20the%20walls.

  9. https://www.cmaa.com.au/benefits.html

  10. https://www.ncma.org/resources/benefits-of-concrete-masonry/fire-resistance/

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