Hello. I am planning to pour a floor in a basement space with what is called 'finsats'. Now, I have a lot of Murcement A lying around from previous projects. Can I use it together with aggregate, or do I need to buy regular Portland cement?
It is a small storage space where I am going to lay tiles afterwards.
I hope I have posted the question in the right place, otherwise, the mod. can move it.
 
No, unfortunately it is not recommended due to the involvement of limestone and additives, which makes it not as strong. Some manufacturers directly advise against using Murcement for concrete, e.g., Combimix here in bold: http://www.combimix.se/pdf/Combimix_MurcementA_PDB_SV.pdf
 
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Dang, then I have to go shopping at the hardware store. Thanks for the answer.
 
Old thread, but what is the goal when mixing out with lime, etc.? Is the aim to create a more flexible mortar when building?
If you think conversely: Can you mix out Portland cement with cheap fillers and get masonry cement?
 
M
Huddingebo said:
Old thread but what is the goal when blending with lime and such? Are you aiming for a more flexible mortar when masonry?
Conversely: Can you dilute Portland cement with cheap fillers to get masonry cement?
Yes, among other things, and yes:

Portland cement + slaked lime + sand + water = KC mortar

Lime/Cement 50/50 weight% (2/1 volume%) = Masonry cement for KC mortar Class C
Lime/Cement 35/65 weight% (1/1 volume%) = Masonry cement for KC mortar Class B
 
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Thank you!
It should be considerably cheaper to build with mortar made from portland since such a bag costs as much as a bag of murcement..? Or is slaked lime more expensive? Where can you buy it?
 
M
Beijer charges 200 kronor for 10 kilos of slaked lime E. It should be available at a well-stocked hardware store near you, and if not, they should be able to order it for you.
 
Ok, then it's not profitable at all to mix it yourself. Better to just buy masonry cement and sand then. 200:-/10kg was much more than I had guessed!
 
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