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Old 06-17-2011, 12:50 PM   #16
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Old Stone Foundation Repair


Oh yeah... I meant to come back and give a final update. The lime mortar took a bit longer to dry (it was also pouring rain that week so the basement walls were damp). But once it dried it was nice and hard. It is a bit softer than the quickcrete mortar, but I guess that's the point. Good luck with your pointing.

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Old 08-26-2011, 09:30 AM   #17
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Old Stone Foundation Repair


Mr. Scarborough,
I have a quick question for you. You said: "For a blended mortar, you can use Type S lime straight from the bag, for lime mortar, the lime needs to be hydrated. Gently cover with water and keep covered with water for at least 2 days, then pour off (and save) excess water and the lime is ready to be used. As long as you keep it covered with water it will remain in a usable condition."
I plan to use as you recommend up to 10% portland to help with an initial set. Is this considered a "blended mortar" ? The lime at the Home Depot in my area is Type S hydrated. Is this different than placing lime in a bucket for several days with water?
I've got a big project and am completely new to this. Thanks for you advice.
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Old 02-02-2012, 09:08 PM   #18
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Old Stone Foundation Repair


Is that all it takes to get hydrated lime? I've been working for years in France (where i learned the masonry trade), and I got back to the states expecting to be able to find NHL-3,5 but it's damn near impossible.

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Originally Posted by Tscarborough View Post
It is acceptable to mix 1 part lime and 3-5 parts sand (by volume, always by volume).

For a blended mortar, you can use Type S lime straight from the bag, for lime mortar, the lime needs to be hydrated. Gently cover with water and keep covered with water for at least 2 days, then pour off (and save) excess water and the lime is ready to be used. As long as you keep it covered with water it will remain in a usable condition. It is extremely caustic when wet, so wear protection.

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