Clay swelling could be reduced significantly by transforming clay minerals into non-expandable binding materials with cementing capacity using alkaline activation.
SINCE the beginning of time, craft makers have transformed clay, sand, fiber, wood, stone and metal into all sorts of ordinary and wondrous objects -- pots, vases, tapestries and necklaces.
Sodium ions replace calcium and other ions in clay complexes, transforming the clay to a sticky mass; water percolation is then drastically reduced, and the basicity of the soil rises markedly.
The Wedgwood Museum was first opened to the public in 1906, and for more than a century it has been telling the story of how six towns in north Staffordshire were transformed through clay and coal into the world-famous Potteries.
Here, primary silicates, such as feldspar and biotite, were transformed into clay minerals, with the original texture of the granite being destroyed by shearing.
So the proposed approach first uses a spectral clay index to estimate clay contents (in relative values as it is done without calibration) and then transform these estimated clay contents thanks to a correction of the distribution and range of clay content estimations using legacy soil data.
That means the soil samples plasticity was increased when treated with wastewater and transformed from clays of medium plasticity (CL) into organic clays of high plasticity (CH, Fig. 7a).
With a "showstopper" round, each week will feature a "main make" in which the contestants have to transform a slab of clay into "glazed glory".
Another point of transition, which is really interesting when talking about ceramics, is that we can take the form of clay and transform the material at a molecular level into ceramic.
The tandoors are dried, then baked at 2,000 degrees in a gas-fired kiln for seven hours, transforming the soft clay into hard, heat-resistant ceramic.
