10/08/2025
🔍 What Are Concrete Biscuits in Slab Casting, and Why Are They Important?
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In building construction, concrete biscuits are small pieces of concrete placed under reinforcement bars before slab casting. They lift the steel off the formwork so it’s fully covered by concrete. Many people overlook them, but they play a big role in making your building last.
5 Reasons Concrete Biscuits Are Important:
1️⃣ Prevent Steel Rusting – They ensure the reinforcement is not exposed, protecting it from moisture that causes corrosion.
2️⃣ Maintain Proper Cover – They keep steel bars at the right height, so your slab meets structural safety standards.
3️⃣ Increase Structural Strength – Properly positioned steel means the slab can carry loads without cracking.
4️⃣ Avoid Costly Repairs – Without biscuits, steel may be exposed, leading to early slab failure and expensive fixes.
5️⃣ Meet Building Codes – They help ensure your project passes inspections and complies with professional engineering requirements.
Bottom line: Skipping concrete biscuits is like building a house with an umbrella full of holes—it will fail when you need it most.
