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Broken Concrete as Fill versus Soil

  1. Jun 17, 2012 #1

    Supposed the ground floor of a building needs to be raised 2 feet higher with respect to street level. How good is using broken concrete as fill versus putting soil? I heard one needs to compact the broken concrete. What do they exactly do when they compact it? Would the overall cost be the same as just putting soil? Which one is better?
  2. jcsd
  3. Jun 18, 2012 #2
    Either works as fill. Both need to be compacted. They do that with a big roller machine that vibrates.
  4. Aug 8, 2012 #3
    you can rent smaller lawn-mower sized compacting units as well.

    are you pouring your slab or foundation on top of this or is this the ground around the building?

    if it's just the ground, you are doing a dis-service by adding in hard to shovel concrete.
    Future gardeners will curse you LOL

    if it's under the slab or foundation, compact it very well to avoid settling.
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