1.6 : レンガの分類

The bricks used in construction are generally classified as facing bricks, building bricks, and hollow bricks.

Facing bricks, also known as face bricks, are designed for structural and aesthetic purposes where the appearance of the brick is key.

Building bricks are utilized in areas such as parts of a masonry wall that are hidden behind facing bricks.

Both facing and building bricks are defined as solid units; these can be truly solid, cored, or frogged. The surface of the brick, withstanding the load, should be at least 75 percent solid.

Hollow bricks can have up to 60 percent of their volume being void and are lighter than solid bricks.

These voids allow for the embedding and grouting of reinforcement bars when there is a need for reinforced brick masonry.

Furthermore, there are paving bricks designed to withstand abrasion and survive through freeze-thaw cycles, during which any water that infiltrates the bricks does not cause harm upon freezing.

There are also firebricks, which are utilized in lining fireplaces installed using very thin layers of fireclay mortar.