Fw: crumbling terracotta
- Subject: Fw: crumbling terracotta
- From: &* F* <p*@comcast.net>
- Date: Mon, 7 Jun 2004 19:39:55 -0700
Title: Re: crumbling terracotta
|
I suspected this, as this was one of
several Mexican pots bought in New Mexico. Freezing isn't
the problem, as it never freezes on my deck.
KReid
----- Original Message -----
From: x*@ucdavis.edu
To: m*@ucdavis.edu
Sent: Monday, June 07, 2004 5:20 PM
Subject: Re: crumbling terracotta Hello All: I am wondering if anyone can tell me why one of the terracotta pots on my deck is beginning to deteriorate on the outside near the bottom. I have two such large pots on the back deck from different origins. . . . Oh well, anyone had this experience and care to comment? Karrie Reid Folsom Foothill Gardener One of the characteristics affecting the quality of ceramics, in addition
to the proportion of mineral constituents in the clay itself, is the temperature
used in the firing at production. A short or a relatively low-temperature firing
leaves the clay body less vitrified or bonded together and susceptible to
deterioration like you describe. Mexican garden pottery is typically produced
this way as it is less costly than high firing but the result is a short lived
product. Probably, water collecting at the bottom of the pot is causing the
worst deterioration. Winter freezing of water penetrating the clay may play a
role also.
Xavier
|
- Prev by Date: Re: crumbling terracotta
- Next by Date: Re: crumbling terracotta
- Previous by thread: Re: crumbling terracotta