Dear railway researchers,
I have a practical question. I am looking for suitable equipment for compacting soil and gravel in the laboratory. In our laboratory, I plan to build a laboratory model in a scale of 1:1 (railway substructure, railway superstructure). In the model, compaction (consolidation, stabilization) of the soil layers and gravel of the ballast bed will be carried out. Can you please share your experience with what device do you use in your laboratory?
In detail, for the soil, it would be best to use a CAT soil compactor equipped with a foot drum, which is used to compact the soil. For gravel, it would be best to use a track bed aggregate stabilizer that is used in track construction/maintenance (eg DGS 80 from Plasser&Theurer).
However, it is obvious that it is not possible to invite these large machines to the laboratory, and therefore it is necessary to use a spare machine. In addition, due to the work in the laboratory, it should work without emissions (no fumes, only electricity or gas is allowed). Do you have any experience or recommendations? Thank you in advance.
Vit
Dear Vit,
we are using the following device for the compaction of the ballast for our 1:1 tests with two sleepers in a ballast box:
Zipper ZI RPE90C (4.1 kW, frequency 70 Hz, centrifugal force 15 kN)
It gives you are very high compaction and therefore reduces the consolidation of the test setup to a reasonable level.
Unfortunatelly it uses a gasoline engine, so you might have to search for other machines with similar technical specifications as the above mentioned ones, but without emissions.
Best regards
Matthias
Dear Vit,
We use the Dynapac LF62 in our labratories (pls. see the picture attached).
Technical specs - LF 62 Dynapac
- Weight 60 kg.
- Centrifugal force 10 kN.
- Working width 330 mm.
- Vibrating frequency 92 Hz.
- Honda.
- Engine type GX120.
- Engine power 2.9 kW.
- Revolutions at max torque 4300 rpm.
Best regards, Harald
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