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What is the correct ratio for mixing concrete?

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  • Jake Gibson
    Jake Gibson Jan 27, 2016

    Cynthia, great question regarding the cement mix ration for concrete. It seems like there would be a formula somewhere on the bags. I've also heard you could order precast concrete, especially if you have a large section to form and pour. Good luck with your project, I'd love to see pictures when you're done.

  • Wesley Colberth
    Wesley Colberth Mar 05, 2016

    Hey Cynthia, great question about the correct ration for mixing concrete. I have worked with concrete before so its safe to assume that your having a lot of trouble on your own mixing concrete. I suppose that ready mix concrete can be delivered so that the ratio of the mix is correct.


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Generally about 2:3 water to cement. it should say on the bag, if it is too watery add more powder, if it is too thick add more water

Posted on Jan 15, 2013

  • bzet1820 Dec 14, 2014

    you are wrong with your answer - you do know that?


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For basic mix use (mix by volume):

4 parts sand
1 part aggregate (stones about 1/4" to 3/4")
1 part cement
1.5 part water (adjust accordingly! that amount is average! add 1 part first and then splash during mix till you have consistent doughy structure! if for pouring - add all of that and then up to 1/2 part more)

this mix is good to use as base under the tiles, foundations for mounting paving, stones, benches, first layer of render on the wall, and whatever will be covered with something else.

for working floor use following mix:
3 part sand
1 part aggregate
1.5 part cement
1.25 to 1.5 part water - see remarks above

there is several other proportions and mixes, unfortunately exceeding scope of this short answer

Posted on Dec 14, 2014

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Concrete is not just a mixture of cement to water. Concrete is a blend of different mortar and or concrete sands. And an aggregate rock if creating foundation or slab structures. Generally you can buy a concrete blend sand with aggregate, (either gravel or river rock round ,(uptown 2"), at a local landscape supply shop. Or they sell pre mix bags of ready mix that you just add water too. Dependant on the desired slump that works best.

A good do it yourself mix is 3to1 or 4to1. 4 parts concrete sand blend to one part cement. Water depends on slump. Buckets work great for measuring. Use a concrete mixer with aggregate sandcastle mortar mixer without aggregate.

Posted on Jun 29, 2014

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