Sand/Cement ratio to fill sandbags?

Discussion in 'Heavy Equipment & Pavement' started by KrayzKajun, Nov 14, 2013.

  1. KrayzKajun

    KrayzKajun LawnSite Fanatic
    Messages: 10,737

    Part of the contract im working on has us providing a sandbag with a sand/cement mixture.

    Would it be better for us to mix our own material or we could purchase 80# bags of a sand/cement rip rap mix and repackage in our sandbags.

    mixing our own material would require more space and some trial runs to get ratio correct.

    anyone have experience with this?
  2. JNB Construction

    JNB Construction LawnSite Senior Member
    Messages: 282

    Three sand-to-one cement should work good. Shovels, buckets, or whatever. It's always cheaper to do it yourself. You can buy a lot of sand for pretty cheap, and bags of cement will yield a lot of product compared to the the price of bags. You could mix the material dry in a mixer to speed things up.
  3. alldayrj

    alldayrj LawnSite Gold Member
    Messages: 3,793

    I would just find a slab or lot you could dump sand and bags onto and mix it with the skid steer. Maybe a paving co could drop some blacktop for you if you prep it. No way premix will be affordable. They will probably provide the ratio they want right?
  4. SVA_Concrete

    SVA_Concrete LawnSite Senior Member
    Messages: 467

    I would call up a concrete supplier with volumetric mix trucks, get a load of sand at your yard (to refill the truck) and have him come down, he can adjust the ratio of cement/sand right on the truck, it mixes in the auger and drops into your sandbag attachment.

    This is the type of truck:
  5. 1idejim

    1idejim LawnSite Fanatic
    Messages: 11,287

    When I worked on bridges we had to have a 50/50 mix of White and standard Portland cement so we mixed the cement on the bridge deck and then mixed the sand in and re-bagged it.

    Pour a slab if you need and start mixing when it cures. You'll figure it out quick.

    Good luck Jacob.
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  6. KrayzKajun

    KrayzKajun LawnSite Fanatic
    Messages: 10,737

    Thanks fellas.
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  7. Impact-Vector

    Impact-Vector LawnSite Member
    Messages: 150

    Stupid question but what's the objective?

    Do they want cement ready to go with just adding water? Or do they want dry bags that will firm up when they get wet? Very different ratios...

    I would also be concerned with what they are trying to protect..lots of liability if it doesn't hold up!
  8. KrayzKajun

    KrayzKajun LawnSite Fanatic
    Messages: 10,737

    Temporary flood barriers will be built using the 3k # bulk totes & 50# sandbags. These barriers will be between the section river and section on levee under construction.

    During construction if there is a threat of a severe rain event, tropical storm, hurricane etc. the barriers will be covered with 6mil Woven Poly sheeting. The sheeting will be trenched in and weighted down using the sand/cement mix bags.
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