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Mortar/Concrete Calculation

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jadyn | 15:24 Thu 27th May 2021 | Home & Garden
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I want to set a rotary clothes line ground spike into a builders bucket full of either mortar or concrete and I'd like some advice on the quantity of mix I need.
I think that a standard builders bucket has a capacity of 14 litre and I'd like to know what weight of sand/cement mix I need to fill the bucket to the the top when combined with the water. I don't want to mess around mixing sand with cement to make the mortar as its a one off job so I'm thinking of buying either a bag or bucket of combined sand and cement.
I don't know if it would be better to get a bag of ready mixed concrete for the job. I'll be mixing it all by hand either way. Would I need a different weight of combined sand, cement and aggregate for the job? Would something like postcrete be cheaper?

Thank you

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Postcrete, Jadyn. (Concrete for posts)

https://www.diy.com/departments/blue-circle-ready-mixed-postcrete-20kg-bag/35713_BQ.prd?gclsrc=aw.ds&ds_rl=1272379&ds_rl=1272409&;gclid=Cj0KCQjwhr2FBhDbARIsACjwLo34YdbF-iaQsugO5c32_CS9wxpfRMjDvBt8j6eVn_l3UWMBnMPWW3waAocJEALw_wcB

1 bag is approx. 12.5 litres
Place the spike, stuff the (ready)mix around it, and add water.
Most fencing contractors use it :o)

For the price of it, it's not worth mixing your own.
I was going to suggest a bag of 'postcrete' before I got to the end of your post. That will be ideal and cheaper than buying small quantities of cement etc.
its brilliant stuff....just make sure you have a method of moving it as its quite heavy.
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Thank you all for your advice. I'm very grateful.
Wolfgang, postcrete is as heavy as dry sand and dry cement. Postcrete bags are (I think) 20 Kgm. One postcrete bag is enough for jadyn's needs.
The instructions say to pour water to a third the depth of the hole and then add the dry mix.
Atheist yes it is....maybe I should have said that ALL solutions are going to be heavy to move?

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