Hollow brick are defined as having greater than 25 percent and at most 60 percent void areas. These voids, or hollow spaces, distinguish them from solid bricks and contribute to specific properties and uses.
Understanding Void Area in Hollow Bricks
The percentage of void area is a key characteristic that defines hollow bricks. As per the definition, a brick must fall within the 25% to 60% void range to be classified as hollow. Bricks outside this range would be considered solid (less than or equal to 25% void) or potentially other types like perforated bricks (different void characteristics and possibly outside this range depending on the standard).
Hollow bricks are further classified based on the exact percentage of their void areas:
- Type 1: Those with a void area not greater than 40 percent.
- Type 2: Those with void areas greater than 40 percent.
This classification often relates to the intended application and the structural characteristics required. Bricks with lower void percentages within the hollow range might be used differently than those with higher percentages.
Classification Based on Void Percentage
| Classification Group | Void Area Percentage |
|---|---|
| Group 1 | > 25% and ≤ 40% |
| Group 2 | > 40% and ≤ 60% |
Understanding this classification is crucial when selecting the appropriate hollow brick for a construction project, as it impacts factors like weight, insulation properties, and load-bearing capacity.
