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Concrete mix question - Forno Bravo Forum: The Wood-Fired Oven Community

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Concrete mix question

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  • Concrete mix question

    I have a near full skid of various bags of dry mortar and stucco mixes which I picked up from Home Depot for almost nothing (torn bags).
    I'm currently working on block wall footings and general concrete work for my new patio.
    Can I simply add gravel to these mixes and use them as concrete? I realize these premixed stucco and mortars use various ratios of cement and sand. I would like to use them up as part of the concrete mix. I also have bags of plain portland cement which I can add to the mix if need be.

    Thanks!
    George

    My 34" WFO build

    Weber 22-OTG / Ugly Drum Smoker / 34" WFO

  • #2
    Re: Concrete mix question

    Yes you can do that.

    Comment


    • #3
      Re: Concrete mix question

      Thanks Tom. I presume the mix ratio is not that critical. If the mix is looking good in the mixer it's good to go.
      George

      My 34" WFO build

      Weber 22-OTG / Ugly Drum Smoker / 34" WFO

      Comment


      • #4
        Re: Concrete mix question

        I also have bags of plastic cement. I assume I can also use that (instead of portland cement) mixed with sand and gravel to make standard concrete mix?
        George

        My 34" WFO build

        Weber 22-OTG / Ugly Drum Smoker / 34" WFO

        Comment


        • #5
          Re: Concrete mix question

          Yes, that is fine too.

          Comment


          • #6
            Re: Concrete mix question

            Thanks again!
            I have another question. I still have several bags of both portland and plastic cements. Would it be cost effective for me to buy 9 cu/ft bags of sand/gravel mix for $30 and use that to make concrete verses buying bags of 90 lb Quikcrete concrete mix @ 3.50 ea?
            These are our local Home Depot prices. I assume each 90 lb mix yields not quite 1 cu/ft?
            George

            My 34" WFO build

            Weber 22-OTG / Ugly Drum Smoker / 34" WFO

            Comment


            • #7
              Re: Concrete mix question

              I am sure the concrete mix is 80# bags and that equals .66 cuft. 1 bag of portland cement (94#, 1 cuft) mixed 3-2-1 gravel/sand/cement will equal around 5.6 cuft.

              That should enable you to calculate which is more cost effective (Usually buying the aggregate in bulk is where the savings is, but the aggregate in bags is generally not cost effective).

              Comment


              • #8
                Re: Concrete mix question

                Aside from the topic above what can you say regarding on stucco services in Calgary? Thanks if you could give even just a sort of ideas.

                Comment

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