Hoggin

Hoggin is a granular material commonly used as a sub-base or surface layer for paths, driveways, and other non-structural applications. It is typically a mixture of sand, gravel, and clay, often containing other fines such as chalk or crushed limestone. The exact composition of hoggin can vary depending on the source quarry.

The clay content in hoggin acts as a natural binder. When compacted, the clay helps to bind the sand and gravel particles together, creating a relatively firm and stable surface. This makes hoggin a popular choice for areas where a hard-wearing but permeable surface is desired.

While hoggin provides a relatively stable surface, it is not suitable for load-bearing structural applications such as foundations. Its strength is limited by the clay content, which can become saturated and lose its binding properties in wet conditions, leading to softening and potential instability.

Hoggin is available in various grades, with the grade typically referring to the size of the gravel and other particles included. Finer grades are often used for pathways where a smoother surface is preferred, while coarser grades are better suited for driveways or areas that will be subject to heavier use.

The term "hoggin" is most commonly used in the United Kingdom. Similar materials may be known by different names in other regions.