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Green Building Bible, Fourth Edition
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Fundamentals: Lime

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      CommentAuthordjh
    • CommentTimeMar 10th 2019
     
    There was a news story about a thesis on lime written by a Swede called Jonny Eriksson. I believe the basic point is a suggestion that mixing and using lime immediately after it is slaked can be better than using stored lime in some circumstances. Unfortunately, the thesis is in Swedish so I haven't read it yet. The press release is at https://science.gu.se/english/News/News_detail//renaissance-for-artisanal-mortar.cid1617873 and the theseis itself is available at https://gupea.ub.gu.se/handle/2077/58552

    There's an English-language paper at https://www.researchgate.net/publication/329230340_Lime_render_shrinkage_cracks_and_craftsmanship_in_building_restoration which I think may contain some of the material in the thesis, but I haven't received the text of the paper yet.

    While searching for the thesis and for anything else about its basic point, I found an excellent summary of limes from Historic Scotland that I think is well worth reading for anybody interested in lime https://www.researchgate.net/publication/264563855_Lime_Mortars_in_Traditional_Buildings_Short_Guide_6

    A couple of other more technical things I found for anybody who's still reading are at:

    https://www.researchgate.net/publication/278720690_Historic_Mortars
    https://www.diva-portal.org/smash/get/diva2:704140/FULLTEXT01.pdf

    Oh and FWIW the search I used was 'pdf Lime render, shrinkage cracks and craftsmanship in building restoration'
    • CommentAuthorJulio
    • CommentTimeMar 10th 2019
     
    Interesting, would like to look into this more. I was speaking to someone the other day who said that they were having good results (quicker carbonation, less shrinkage) using like that was slaked with the aggregate already mixed amongst it, which would suggest that you can use it soon after slaking...I dont know if any of the various producers are premixed lime that is made in this way.
    • CommentAuthortychwarel
    • CommentTimeMar 10th 2019
     
    Its called a hot lime mix, basically mix unslaked lime and wet aggregate together and use immediately, certainly historically used as the standard way of making stone laying mortars and concretes.
    • CommentAuthortychwarel
    • CommentTimeMar 10th 2019
     
    I have read that such mixes using unslaked hydraulic lime were regularly used in C19 marine civil engineering works. The heat from the slaking being very helpful starting the set in the very cold environment of river and sea beds.
    When I worked at Ty mawr lime I do remember supplying a customer with unslaked lime and aggregate separately to make their own hot mix

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