🧱 Clay-Fly Ash Bricks (फ्लाई ऐश और मिट्टी की ईंटें)

Fly Ash Bricks को fly ash (thermal power plant का by-product), lime, gypsum और sand/clay मिलाकर तैयार किया जाता है। ये bricks traditional clay bricks का eco-friendly विकल्प हैं।

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🔸 1. Composition of Fly Ash Bricks (घटक)

• Fly Ash – ~60%
• Sand / Stone dust – ~20%
• Lime – ~10%
• Gypsum – ~5%
• Water – ~5%

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🔸 2. Comparison Table: Clay vs Fly Ash Bricks

Property	Clay Bricks (मिट्टी की ईंटें)	Fly Ash Bricks (फ्लाई ऐश ईंटें)
Raw Material	Natural clay	Fly ash, lime, gypsum
Manufacturing Process	Hand moulding + firing in kilns	Machine moulding + curing
Water Absorption	15–20%	<10%
Compressive Strength	3.5–5 MPa	7–10 MPa
Eco-Friendliness	Uses topsoil – not sustainable	Utilizes waste – eco-friendly
Size Uniformity	May vary manually	Highly uniform (machine made)
Cost	Moderate	Comparable or cheaper in bulk

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🔸 3. Advantages of Fly Ash Bricks

• Better strength and durability
• Low water absorption
• Less mortar required due to uniformity
• Thermal insulation and fire resistance
• Environmentally sustainable

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🔸 4. Disadvantages / Limitations

• Initial cost of setup (machines)
• Availability of fly ash near plant area is essential

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🔸 5. Applications (उपयोग)

• Load-bearing and non-load bearing walls
• Partition walls in buildings
• High-rise structures due to light weight

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🔸 निष्कर्ष (Conclusion)

Fly Ash Bricks एक बेहतर विकल्प हैं पारंपरिक clay bricks का, खासकर जहाँ strength, precision और sustainability की आवश्यकता होती है। Government projects और green building initiatives में इनका उपयोग बढ़ रहा है।