Fly Ash Bricks Size, Weight & Strength - Complete Guide about 8 types of bricks

Understanding Fly Ash Bricks Sizes

Fly ash bricks, pivotal in the construction sphere, predominantly come in a universal dimension, frequently seen in India: 230mm x 110mm x 70mm or in a more familiar term, 9” x 4” x 3”. This size is optimal for constructing both the interior and exterior walls of homes due to its weight of approximately 2.6 kg. When used in construction, these bricks play a significant role in reducing the dead load on buildings due to their relatively lightweight nature.

It’s noteworthy that while this size is considered the gold standard for residential construction, fly ash bricks, and their cement counterparts, are also accessible in several other sizes to cater to diverse quality and consumer requisites.

Popular Fly Ash Brick Sizes Worldwide:

9” x 4” x 3” (230mm x 110mm x 75mm)
8” x 4” x 4” (190mm x 90mm x 90mm)
9” x 4” x 4” (230mm x 110mm x 100mm)
16” x 8” x 8” (400mm x 200mm x 200mm)
16” x 6” x 8” (400mm x 150mm x 200mm)
16” x 4” x 8” (400mm x 100mm x 200mm)
12” x 6” x 6” (300mm x 150mm x 150mm)
12” x 9” x 6” (300mm x 230mm x 150mm)

These sizes resonate not just in India but also across global territories like the US, UK, Canada, Australia, and the Philippines.

Fly Ash Bricks and Their Weight Significance

To enhance the stability and longevity of a structure, it’s crucial to minimize the dead load. And this is where fly ash bricks’ lightweight property becomes indispensable. A conventional fly ash brick, with the dimensions 9” x 4” x 3”, holds a weight close to 2.6 kg.

The density of these bricks can oscillate between 1500 to 1850 kg/m³. Translating this to individual brick weights, a standard-sized brick (9” x 4” x 3”) weighs between 2.75 to 3.25 kg.

Weight Guide for Various Fly Ash Bricks:

9” x 4” x 3” (230mm x 110mm x 75mm) – Roughly 3.2 kg
8” x 4” x 4” (190mm x 90mm x 90mm) – Close to 3.5 kg
9” x 4” x 4” (230mm x 110mm x 100mm) – Approximately 4.3 kg
16” x 6” x 8” (400mm x 150mm x 200mm) – About 20 kg
16” x 4” x 8” (400mm x 100mm x 200mm) – Nearly 14 kg
12” x 6” x 6” (300mm x 150mm x 150mm) – Circa 11 kg
12” x 9” x 6” (300mm x 230mm x 150mm) – Around 17 kg

Compressive Strength: The Hallmark of Fly Ash Bricks

The durability of fly ash bricks is often gauged by their compressive strength. This strength, measured using the Compressive Testing Machine (CTM), is represented in units like MPa, N/mm², or kg/cm². Adhering to ASTM and IS standards, a quintessential fly ash brick should have a compressive strength hovering between 7.5 to 10 N/mm² or 75 to 100 kg/cm². These figures encapsulate the benchmark strength that construction professionals look for in fly ash bricks.

In essence, when opting for fly ash bricks, understanding their dimensions, weight, and strength can play a pivotal role in ensuring the durability and longevity of a construction project.

Conclusion:

Size (in mm)	Size (in inches)	Weight
230 x 110 x 75	9″ x 4″ x 3″	~2.6 kg
190 x 90 x 90	8″ x 4″ x 4″	~3.5 kg
230 x 110 x 100	9″ x 4″ x 4″	~4.3 kg
400 x 200 x 200	16″ x 8″ x 8″	~27 kg (approx. for a density of 1700 kg/m³)
400 x 150 x 200	16″ x 6″ x 8″	~20 kg
400 x 100 x 200	16″ x 4″ x 8″	~14 kg
300 x 150 x 150	12″ x 6″ x 6″	~11 kg
300 x 230 x 150	12″ x 9″ x 6″	~17 kg