Le 30/10/12 11:14 AM, clipka a écrit :
> Am 30.10.2012 15:56, schrieb Alain:
>
>>> * too much random variation of colours: colour of bricks came from the
>>> temperature in the oven, nearby bricks in the oven get the same kind of
>>> colour... and nearby bricks in the oven ends up as nearby bricks in the
>>> package... then nearby bricks in the package ends up on the same row or
>>> nearby rows (unless you are a Netherlander, in which case you might have
>>> a white package and a red package to pick from in order to make some
>>> motifs).
>>
>> The colour variations in this image are very similar to those I see
>> every day in my, and several others, neibourhood. The colour variation
>> don't come only from the cooking temperature but also from the pigment
>> used, and how well mixed in it was, and variations in the clay used.
>> Older houses have much more variation than recent ones reflecting both
>> hovens having a more uniform temperature and improved mixing equipment.
>
> Mixing of different batches of bricks may also have been common in large
> European (especially German) cities after WW2, when people gathered
> intact bricks from the ruins. (Those bricks might also have been subject
> to fires, which might have introduced additional color variations via
> soot and heat.)
>

We never had that in Montréal... No major war and no massive destruction 
in this area in about 200 years :)
But, yes, deliberate mixing is sometimes evident, like that house in 
front of mine where dark bricks dominate in the bottom of the wall and 
lighter ones in the top with a gradual shift.

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