The compressive strength of brick varies widely, ranging from approximately 7 MPa to over 50 MPa, depending on the type of brick and its manufacturing process.
Brick strength is not a fixed value because it's influenced by several factors, primarily the raw materials used and the firing method employed during production. Different brick classifications, like NFP (Non-Facing Purpose) bricks and Face Brick Extra or Engineering bricks, are designed to meet different structural requirements, resulting in this range of compressive strengths.
Here's a breakdown of the general compressive strength ranges for different brick types:
- NFP (Non-Facing Purpose) Bricks: These typically have a lower compressive strength, around 7 MPa. They are generally used in applications where strength is not a primary concern, such as internal walls or as infill material.
- General Purpose Bricks: These bricks usually fall within the range of 10 - 20 MPa.
- Face Brick Extra and Engineering Bricks: These are manufactured to withstand higher loads and environmental conditions. They exhibit compressive strengths greater than 50 MPa. These bricks are often used in load-bearing walls, foundations, and other structural applications.
In summary, when specifying brick for a project, it is crucial to consider the required compressive strength and select a brick type that meets or exceeds those requirements. Consult with a structural engineer to determine the appropriate brick strength for the specific application.
