Backfilling is an important part of the construction process. Backfilling happens after excavation, when the soil is compacted back into the trench or foundation. It is used to help protect foundations, roadways, walkways and other structures by using a mixture of soil, rocks, and stones.
What is the purpose of backfill?
Backfilling is the process of reusing or replacing the soil that is removed during the excavation of foundations, ground bearing slabs or other groundworks to support and strengthen a structure. It protects foundations and forms part of the substructure of slabs, roadways, walkways and other groundwork elements.
What are the types of backfill?
Different Types of Backfilling Material
- Course Grained Soil. Coarse-grained soils include gravelly and sandy soils and range from clayey sands (SC) through the well-graded gravels of gravel-sand mixtures (GW) with little or no fines.
- Fine Graded of Soils of Low to Medium Plasticity. ...
- Commercial By-Products. ...
- CLSM.
