Drying Performance
Refers to the ability of a clay to dry without cracking. Lab results for drying performance and drying shrinkage give a much more complete picture than drying shrinkage alone. Clay with lower drying shrinkage normally dries well (without cracking) but can also dry poorly if it lacks strength. Likewise, clays with higher drying shrinkage normally dry poorly, but they can also be made to dry better by increasing dry strength or adding aggregate or fiber. Drying performance tests can be done in simple ways and they normally accelerate the drying of one section of a sample while slowing down water release in another section, this sets up a situation where the rigid section resists shrinkage of the undried section. Differences in the type of failure provides opportunities to rate one clay against another. Out Bound Links
Pictures
DFAC dried disk showing soluble salts and drying performance crack typical of a plastic pottery clay body.
Drying disks used for the DFAC test to measure the drying performance of a clay
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- Login to a private account or work with others in a group account (e.g. university).
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- Many ways to search and classify glaze and body recipes.
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Imports many file formats
- Glaze recipe formats supported: HyperGlaze, GlazeGhem, GlazeMaster, Matrix, INSIGHT XML recipes (single and multiple), INSIGHT SQLite DB files.
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