Subject: | |
From: | |
Reply To: | Yes, we set off an A-bomb but we are really sorry about it. |
Date: | Sun, 3 Dec 2006 04:47:23 -0200 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
[log in to unmask] wrote:
> So, is glazed brick as it is presently made any "better" than the
> infamous glazed brick of the 1960s?
>
> Christopher
> -- To terminate puerile preservation prattling among pals and the
> uncoffee-ed, or to change your settings, go to:
> http://listserv.icors.org/archives/bullamanka-pinheads.html
Maybe yes, maybe no.
As the finite supply of some raw materials diminishes in quality so does
the quality of the manufactured product. The segment of 'quality' issues
for old growth timber is more restrictive than it is for clay or sand.
The raw materials being used for glazed brick now may still be as good -
as far as anyone is able to perceive -- as was available in the 1960's.
On an infinite scale it would be easy to say that all things
manufactured next will be qualitatively less than if manufactured now or
yesterday. Human attention does not go that far but wakes up on occasion
and therefore tomorrow might actually result in something better, but in
the long run it all breaks down.
And then with technology, human intervention, there is reformulation of
recipe, a recombining of raw materials, and that may be for the better.
Essentially a glazed brick is a hunk of fired clay with glass attached.
Stuff can be added to the clay to hold the glaze better. Stuff can be
added to the glaze to hold the clay better. Stuff can be added to the
glass to change the thermal expansion-contraction characteristics of the
clay and the glaze. Technique can be refined. There can be an optimal
glazed brick. Question then is does it pay to make an optimal glazed
brick? Are contemporary brick manufacturers, the largest Australian
conglomerates etc. more diligent or more lazy than in 1960? The brick
industry is certainly not what it was in 1960.
Does a glazed brick made today use less non-renewable energy than in
1960? Is a more energy efficient brick better?
The off-gassing in the process of glazed brick manufacture is it
restricted in any manner that would affect the quality of the glazed
brick that is manufactured? Restrictions on recipes for paints and
sealants in respect of VOC emmissions has had an affect on the quality
of the materials that is not relevant to optimal product and/or
limitations in the manufacturing technology or management of quality
control.
Is there lead used in the glazes either in 1960 or currently? If so, is
there lead abatement for demolition of 1960's era glazed brick structures?
Better for what asks Ignatz?
][<
--
To terminate puerile preservation prattling among pals and the
uncoffee-ed, or to change your settings, go to:
<http://listserv.icors.org/archives/bullamanka-pinheads.html>
|
|
|