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Groundwork & Foundations

Cement to all in ballast

Help please !
How many 25Kg bags of cement do I need for 1 cubic metre of all-in-ballast when mixing concrete at a ratio of 1:6.

6 Answers from MyBuilder Groundworkers

Best Answer

Errmm.. At 6:1 ratio you will need approx two bulk bags which is 1700kg or 1.2cumtrs. Which adds up to 11.3 bags of cement, I would get 12.


Answered 29th Jan 2012

Simple calculation. Usually it's 1:4 so for every 4 kg of sand 1 kg of cement. As they called tone bag - around (400 kg) you'll need 100 kg cement. So one tone bag of sand - four bags of cement.

Hopefully this will help


Answered 9th Aug 2016

1 metre is approx 2.2 tonne
70 shovels in a tonne

I'd get 10 bags and you couldnt go wrong.


Answered 15th Aug 2011

my self normaly find that 4 ballast/sand and 1 cement (thats shovels) 4in1 is a strong enough mix


Answered 29th Jan 2012

How many ton bags of ballast do I need to do footings 7meters x1 meter deep


Answered 12th Jan 2020

14 tone bags


Answered 8th Apr 2020

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