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Bentonite layers from an ancient deposit of weathered volcanic ash tuff in Wyoming Gray shale and bentonites (Benton Shale; Colorado Springs, Colorado). Bentonite (/ ˈ b ɛ n t ə n aɪ t / BEN-tə-nyte) [1] [2] is an absorbent swelling clay consisting mostly of montmorillonite (a type of smectite) which can either be Na-montmorillonite or Ca-montmorillonite.
Bentonite usually forms from weathering of volcanic ash, most often in the presence of water. However, the term bentonite, as well as a similar clay called tonstein, have been used for clay beds of uncertain origin. For industrial purposes, two main classes of bentonite exist: sodium bentonite and calcium bentonite.
The lining of paintings is a process of conservation science and art restoration used to strengthen, flatten or consolidate oil or tempera paintings on canvas by attaching a new support to the back of the existing one.
Oil painting is a painting method involving the procedure of painting with pigments combined with a drying oil as the binder. It has been the most common technique for artistic painting on canvas , wood panel or copper for several centuries.
A mixture of bentonite and water used to make slurry walls; Coal slurry, a mixture of coal waste and water, or crushed coal and water [5] Slip, a mixture of clay and water used for joining, glazing and decoration of ceramics and pottery. Slurry oil, the highest boiling fraction distilled from the effluent of an FCC unit in an oil refinery. It ...
List of paintings created during 1858–1871 1872–1878 1878–1881 1881–1883 1884 1884–1888 1888 1888–1898 1899–1904 1900–1926 This is a list of works by Claude Monet (1840–1926), including all the extant finished paintings but excluding the Water Lilies, which can be found here, and preparatory black and white sketches. Monet was a founder of French impressionist painting, and ...
Fat over lean refers to the principle in oil painting of applying paint with a higher oil to pigment ratio ('fat') over paint with a lower oil to pigment ratio ('lean') to ensure a stable paint film, since it is believed that the paint with the higher oil content remains more flexible. [dead link ] [1]
The addition of up to 5 mass percent of organic additives (e.g. acrylate dispersion, hydrophobisers, thickeners or similar) makes ready-to-use paint in containers possible. These are also called "dispersion silicate paints" (DIN 18363 Painting and coating work Section 2.4.1). The range of application for such silicate paints is significantly ...