Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > rec.crafts.metalworking > #543657

Thanks guidance mechanical etc. - preoccupied lime mortar'ing

Show all headers | View raw

Thanks everyone for entertaining my posts about welding, generators
and offgrid electric power, etc., etc.

I have come in and looked at replies.

Silence has been I have been lime-mortar'ing, and using lime in
another niche application I came across - "mud" mortar -
subsoil-mortar - used in local natural stone construction here in
Cornwall (and around Britain historically, it seems).

Lime-mortar you can buy as a premix in sacks.  Apparently the lime
component is already slaked through to CaOH - which is dried so is a
powder - but which otherwise holds all the right characteristics.
Giving you an easy-to-use much less hazardous material to work with.
Took me ages coming from nothing to having some idea what to use.
Then at a basic level the meaning of the terminologies.

The "subsoil-mortar" had me doing "hot-mix lime".
Lime component goes in as the quicklime, CaO, as it comes out of a
lime-kiln.  Its heat of hydration is notorious - leading to name
"hot-mix".  Seeing is understanding...

I at least somewhat see now how in Roman "hydraulic mortars" - mortars
which have a self-setting reaction "within themselves" after
hydration, not solely relying on drying and/or reaction with
carbon-dioxide in the atmosphere (as lime tries to revert to
limestone) - are "clever".  Roman mortar on quays / harbours in
seawater have lasted 2 millennia and remain sound.  It was thought
unreacted quicklime was "careless" hot-mixing.  I can now at least
kind-of see what has recently been realised - that feature is
deliberate.  It gives a self-healing mechanism, by having a reservoir
of quicklime to chemically react and self-heal if there is structural
settlement etc.

So have been preoccupied.
While being grateful for help & guidance which came-in on topics I have
asked about.

Back to rec.crafts.metalworking | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

Thanks guidance mechanical etc. - preoccupied lime mortar'ing Richard Smith <null@void.com> - 2026-08-23 06:44 +0100
  Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing "Jim Wilkins" <muratlanne@gmail.com> - 2026-08-23 07:45 -0400
    Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing Bob La Londe <none@none.com99> - 2026-08-23 09:52 -0700
      Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing "Jim Wilkins" <muratlanne@gmail.com> - 2026-08-23 18:25 -0400
        Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing Bob La Londe <none@none.com99> - 2026-08-24 12:19 -0700
          Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing Richard Smith <null@void.com> - 2026-08-25 10:45 +0100
            Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing "Jim Wilkins" <muratlanne@gmail.com> - 2026-08-25 17:48 -0400
              Re: Thanks guidance mechanical etc. - preoccupied lime mortar'ing Richard Smith <null@void.com> - 2026-09-02 13:20 +0100

csiph-web