Hydrated Lime.

[White Room]

Here you go,

After much debate (some heated I'll come to that in a minute), this is how we do it.

4 parts sharp sand
1 part hydrolic Lime
Approx 3% white cement (we put this in to ensure some solidity in the bedding)

Mix the sharp sand and the lime and the white cement to a semi dry mix and bed down hard. Then sprinkle over with water from the watering can.
The important bit is this, make sure the back of the stone has been covered with wet lime slurry or you won't get the adhesion to the bedding.
Ensure that the bed is solid, and the stone is well bedded, if you dont your going to know about it a few months down the line.

Also an important factor is the temp, it is notoriously difficult to get it to set off in cold weather,

I have to throw this in, you said the architect is stated hydrated lime, well unless you have 6 months to sit around waiting for the bedding mix to go off then its all good, but you havent. You need to clear this with them and get this point across. Hydrated = no Hydrolic =yes?

Let us know how you get on.

Lynn

If your putting cement with hydraulic lime then why not use just sand/cement....which hydraulic lime would use 3.5, 5 or above.

 

[Pebbs]

Because the white cement is minimal and acts as a binder, if hes doing a grade 2 restoration job, and the architect has asked for it, he has to follow that instruction. It would be a lot easier to do a straight sand/cement mix, as this one is a pain.

Lynn

 

[White Room]

You tell spab (society for the protection of ancient buildings) they would have a fit... just my view but what do I know.

 

[Al@Lifetiles]

This is why i have posted on this forum! Is there a definitive answer that i can go to the architect with?
Probably not. The issue is adding cement. Without it i cant see the floor ever setting or being solid enough. With it will upset the men with clipboards.
This is also only my view, but i know alot more than i did 24hrs ago.

 

[Musivarius]

Might be worth you giving this company a call, if you haven't already
anglialime.com
They've been in the trade for a long time and should been able to give you some pointers too.

 

[widler]

Im with whitebeam on this, hydraulic lime acts as cement, it sets. Although i dont suppose putting cement in will do it any harm.




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I am here: http://maps.google.com/maps?ll=53.800018,-2.266661

 

[Derek Manning]

Here you go,

After much debate (some heated I'll come to that in a minute), this is how we do it.

4 parts sharp sand
1 part hydrolic Lime
Approx 3% white cement (we put this in to ensure some solidity in the bedding)

Mix the sharp sand and the lime and the white cement to a semi dry mix and bed down hard. Then sprinkle over with water from the watering can.
The important bit is this, make sure the back of the stone has been covered with wet lime slurry or you won't get the adhesion to the bedding.
Ensure that the bed is solid, and the stone is well bedded, if you dont your going to know about it a few months down the line.

Also an important factor is the temp, it is notoriously difficult to get it to set off in cold weather,

I have to throw this in, you said the architect is stated hydrated lime, well unless you have 6 months to sit around waiting for the bedding mix to go off then its all good, but you havent. You need to clear this with them and get this point across. Hydrated = no Hydrolic =yes?

Let us know how you get on.

Lynn

hello, very interested in this, how do you make the lime slurry please

 

[Derek Manning]

What do you make up the wet lime slurry with please