01/02/2025
Types of concrete cracking
Here are some types of cracks in reinforced concrete:
1. ๐๐ฅ๐๐ฌ๐ญ๐ข๐ ๐ฌ๐ก๐ซ๐ข๐ง๐ค๐๐ ๐ ๐๐ซ๐๐๐ค๐ฌ: These cracks are often shallow, irregular. They occur when the concrete is still in its plastic state and is drying too quickly.
2. ๐๐ซ๐ฒ๐ข๐ง๐ ๐ฌ๐ก๐ซ๐ข๐ง๐ค๐๐ ๐ ๐๐ซ๐๐๐ค๐ฌ: These are hairline cracks that run parallel to each other and can occur anywhere in the concrete as it dries and shrinks.
3. ๐๐ก๐๐ซ๐ฆ๐๐ฅ ๐๐ซ๐๐๐ค๐ฌ: This type of cracks is caused by temperature changes in the concrete. Extreme heat or cold can cause the concrete to expand or contract, resulting in cracks.
4. ๐๐๐ญ๐ญ๐ฅ๐๐ฆ๐๐ง๐ญ ๐๐ซ๐๐๐ค๐ข๐ง๐ : These occur when the soil beneath the concrete settles or shifts, causing the concrete to crack and become uneven.
5. ๐๐ญ๐ซ๐ฎ๐๐ญ๐ฎ๐ซ๐๐ฅ ๐๐ซ๐๐๐ค๐ฌ: These are cracks that occur due to overloading or inadequate design or poor materials or poor construction, in this case the applied loads exceed the capacity of the concrete to resist. Structural cracks typically exceed 0.3 mm, and may continue to widen over time. Structural cracks may include: Shear cracks, Flexural cracks, Shear/flexural cracks, Torsion cracks.
6. ๐๐จ๐ซ๐ซ๐จ๐ฌ๐ข๐จ๐ง ๐๐ซ๐๐๐ค๐ฌ: These are cracks caused by expansion of the reinforcement steel inside the concrete due to corrosion.
7. ๐๐ซ๐๐๐ค๐ฌ ๐๐ฎ๐ ๐ญ๐จ ๐๐ฅ๐ค๐๐ฅ๐ข-๐๐ ๐ ๐ซ๐๐ ๐๐ญ๐ ๐ซ๐๐๐๐ญ๐ข๐จ๐ง (๐๐๐): This is a chemical reaction that occurs between the alkaline cement paste and certain types of aggregates in the concrete, resulting in a gel-like substance that can cause expansion and cracking over time. AAR can include alkali-silica reaction (ASR) and alkali-carbonate reaction (ACR).
