I wish to know how plasticity develops. The popular notion is that crystals of Kaolinite slide over each other lubricated by water. But there seem to be an anomaly. Plastic clay can vary from between 70% to 80% mass (weight)of clay with the balance water.
www.newton.dep.anl.gov/askasci/gen99/gen99987.htm
However, the question of the way the water molecules arrange themselves in space beyond the clay crystals still seems to be moot. An haphazard arrangement seems to infer that the mechanical properties under stress would cause considerable variability in plastic behaviour.
www.newton.dep.anl.gov/askasci/gen99/gen99990.htm
Class Notes on the Plasticity of Clay ... Claim 3: Capillary action of water between clay particles is key to plasticity. ... Addition of temper decreases workability (plasticity). Can replace up to 50% of clay with non-plastics, reducing drying shrinkage to _.
www.ic.arizona.edu/ic/mse257/class_notes/plasticity.htm... www.ic.arizona.edu/ic/mse257/class_notes/plasticity.html
Arts and Crafts question: How does plasticity affect clay bodies? How plastic a clay is determines how far and how much it can be stretched. For example you would want a clay with a some what hight elasticity ... Discuss the question "How does plasticity affect clay bodies?"
wiki.answers.com/Q/How_does_plasticity_affect_clay_bodi... wiki.answers.com/Q/How_does_plasticity_affect_clay_bodies
Hello potters, I've been following the postings about the plasticity issue. The point was made that the older the clay the more plastic it becomes. That was always my belief too. BUT that is why I wrote to Clayart - I had clay that was kept for a long time, both damp and dry, and it had lost plasticity.
www.potters.org/subject76763.htm
Being only a very weak flocculant, the effect on plasticity of clay is likely to be negligible, compared to stronger acids.. Michael Banks, Nelson, New Zealand ; ----- Original Message ----- ;
www.potters.org/subject54976.htm
Plasticity is influenced by the past history of the clay, type of clay, amount of working the mixture has received, the amount of souring, temperature and moisture content. ... Relative plasticity of clay minerals as given by E. C. Bloor, Plasticity: A critical survey. Transactions of the British Ceramic Society.
web.ukonline.co.uk/claysales/plasticity.htm web.ukonline.co.uk/claysales/plasticity.htm
Abstract: We study a quasistatic evolution problem for Cam-Clay plasticity under a special loading program which leads to spatially homogeneous solutions. Under some initial conditions, the solutions exhibit a softening behaviour and time discontinuities.
cvgmt.sns.it/papers/daldes08/
QUASISTATIC EVOLUTION FOR CAM-CLAY PLASTICITY: A WEAK FORMULATION VIA VISCOPLASTIC REGULARIZATION; AND TIME RESCALING; G. DAL MASO, A. DESIMONE, AND F. SOLOMBRINO; Abstract. Cam-Clay nonassociative plasticity exhibits both hardening and softening behaviour, depending on the loading.
cvgmt.sns.it/papers/daldessol09/DM-DeS-Sol-08-preprint.... cvgmt.sns.it/papers/daldessol09/DM-DeS-Sol-08-preprint.pdf
Clay Soil Stabilizer LBS reduces plasticity and improves CBR, LBS can be used in all climates! ... Clay Stabilizer "LBS™" stands for "Liquid Base Stabilizer", and it does just what the name implies. It reduces plasticity in clay and lime bearing soils to a point that the soil becomes stabile.
www.enviroseal.com/lbs.htm
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