What's the difference between rammed earth fill and square backfill? Please tell us their definition and construction process.

1. Earthwork compaction: it means that the compactness requirements are met during the construction of the earth filling side, and the compactness requirements are met through compaction. Compaction shall be done by layers during construction, and the thickness of each layer is generally about 0. 15 ~ 0.2m;

2. Earthwork not marked as backfill shall be rammed and filled, which may or may not be backfilled, such as earthwork construction of filled subgrade and site filling construction;

3. Earthwork backfilling: Generally speaking, it refers to backfilling the earthwork excavated in the early excavation process, such as trench soil after the foundation project is completed, backfill soil in the center of the house, trench backfill soil after the pipeline construction is completed, etc. Earthwork backfilling does not mean whether it is compacted or not. So there are two kinds: loose filling and rammed filling.

4. What needs to be distinguished in the filling project is that the source or distance of earthwork required for filling is different; It is manual when it is close. Or rickshaws, bulldozers, forklifts, etc. Use scrapers, bulldozers, etc. when it is a little further away. When the distance is far, it will be transported into the site by dump truck.