What Is The Proper Ratio Of Portland Cement Mix For Setting Rocks In Masonry Wall? - Concrete, Stone & Masonry - DIY Chatroom Home Improvement Forum
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Old 11-17-2017, 07:26 AM   #1
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What is the proper ratio of portland cement mix for setting rocks in masonry wall?


I have an old a rock wall that needs to be patched up.

There are small voids where stone has fallen out.

My question is what is the ratio of portland cement to sand used to set the new stones in the wall?

Is the ratio different for the mix used for the mortar between the
stones on the facade of the wall?
Thanks for your help
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Old 11-17-2017, 08:00 AM   #2
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Re: What is the proper ratio of portland cement mix for setting rocks in masonry wall


How old is the wall?
The new mortar should match the existing in make up as close as possible. If it is a Lime type mortar than use a lime based mortar. If it is a hard Portland type mortar the best thing to do is use a premix with a low PSI. If it is Lime based you can also get a premix to come close to the existing.
See if you can find this report on the internet ( Estimators' Reference ) Mortar Conversions.
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Old 11-17-2017, 01:55 PM   #3
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Re: What is the proper ratio of portland cement mix for setting rocks in masonry wall


Clarence,
thanks for your reply. The wall is 30-40 years old and has some missing stones I want to replace.
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