Backfill is the aggregate removed from construction sites and reused for practical and environmentally friendly purposes such as foundation protection, landscaping, and filling voids. It is also used in mining operations, landscaping, and surrounding pipes to protect them from damage.
Backfill, or backfill, is aggregate that is removed from a construction site as part of the construction process. Rather than simply being taken away and discarded, this aggregate is often used for not only practical, but also environmentally friendly purposes. It can be used in tasks such as foundation protection, landscaping, or filling voids that would weaken underground structures.
Perhaps one of the most common uses for this material is to provide some protection along the base of a foundation wall. At the end of the excavation of the site, the foundations are laid. To provide added support to the foundation wall, the excavated dirt is compacted tightly around the perimeter of the foundation. This effectively helps minimize displacement and provides a more stable environment for the structure being erected on the foundation.
A second application for backfill is found with mining operations. When various types of minerals are removed from the ground, a void is left where the harvested veins once resided. In order to maintain the integrity of the mine and allow the underground mining activity to continue to expand, aggregate is used to fill those voids. This will minimize the chances of one or more chambers in the mine shaft collapsing as the mining procedure continues.
Backfill can also be used when landscaping around a home, new commercial building, or even when changing the lay of the land in preparation for a new section of road or highway. With this application, material is brought in from another location and used to fill in or build up sections of the land. Aggregate allows the surface of the land to be leveled so that the area around a newly built home can be landscaped with trees and various types of flora and fauna.
At the same time, the backfill can be transported to a relatively flat area and used to create inclines necessary for the construction of overpasses, which are common on many highway systems. By packing the material tightly, the elevated sections easily allow for the construction of a connecting bridge which allows an overpass to be erected over a road or bisecting road, effectively allowing traffic flow to proceed more efficiently.
Backfill is also used to surround pipes that are buried below the surface. With this application, the backfill helps protect the pipe from damage, a function that is especially important when the pipe carries electrical wire or natural gas. The natural buffer of the earth helps to absorb the vibrations of the surface which would otherwise weaken the pipes over time, causing interruptions in the public utility service or creating health risks for those who live in the area.
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