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 height elasticity for wheel thrown pieces but, maybe not so much for sculpture. If a clays elasticity is not high it will crack or break when you try to stretch it
Add bentonite to the clay body.
Add bentonite to the clay body
Ex.: plasticine, clay, soils, bread, butter, etc.
The plasticity index (PI) is a measure of the plasticity of soil, specifically indicative of the range of moisture contents over which the soil behaves plastically. For sand, which typically has little to no plasticity, the plasticity index is usually zero or very close to it. This is because sand particles do not adhere to each other when wet, unlike clay, which can swell and shrink significantly with moisture changes. Consequently, sands are generally classified as non-plastic.
Clay is not considered a soft rock. It is a type of sedimentary material that is formed from the weathering and erosion of rocks. Clay has a fine particle size and exhibits plasticity when wet, making it an important material in ceramics and construction.
Clay leaching do not affect pH
Clay has a very fine grain size, typically smaller than 0.002 mm in diameter. It is the smallest particle size among all soil types, which gives clay its unique properties like high plasticity and cohesion.
Examples of plasticity include the brain's ability to reorganize itself after injury, such as in stroke patients where other areas of the brain compensate for damage. Muscles can also exhibit plasticity, with strength training leading to muscle growth and adaptation. Plasticity is also seen in the developing brain, where connections between neurons are constantly forming and reshaping based on experiences and learning.
Clay minerals are microscopic, platy particles, and which have variable plasticity when mixed with water. Some of the major groups of clays include types called illites, kandites, smectites, and vermiculites. They are mostly hydrous silicates.
primary clay:- once formed from the parent rock deposited at origin, so less impurities,coarse particles,less humic acid , low plasticity& low shrinkage than 2ndry claysecondry clay:- 2ndry clay are transported and formed, so more impurities, fine particles, more humic,higher plasticity and shrinkage.
The cohesion value of clay refers to its ability to hold together. Clay typically has a high cohesion value due to its small particle size and high plasticity, which allows it to stick together and resist deformation. This makes clay suitable for use in construction materials such as bricks and pottery.
Argillaceous refers to materials that are composed of or contain clay minerals. These materials typically have a fine-grained texture and show characteristics of clay, such as plasticity and the ability to hold water. Argillaceous materials are commonly found in sedimentary rocks and soils.