'Fly ash bricks' compared to conventional clay bricks:
Choose the correct answer
Are always weaker and less durable
Use industrial waste (fly ash), no clay excavation, better dimensional accuracy, equal or higher strength
Require more cement mortar
Cannot be used in load-bearing walls
Correct Answer
B. Use industrial waste (fly ash), no clay excavation, better dimensional accuracy, equal or higher strength
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Fly ash bricks (IS 12894): made from fly ash (60–80%) + lime + gypsum + sand, formed under pressure and steam cured. Advantages over clay bricks: no soil excavation, uses industrial waste, more uniform dimensions, higher compressive strength (> 75 kg/cm² = 7.5 MPa), lower water absorption (< 15%), less plastering waste. Eco-friendly substitute for clay bricks.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.