''Betograve'' is a type of concrete sculpting. A document published by the

Nasher Sculpture Center Opened in 2003, the Nasher Sculpture Center is a museum in Dallas, Texas, that houses the Patsy and Raymond Nasher collection of modern and contemporary sculpture. It is located on a site adjacent to the Dallas Museum of Art in the Dal ...

says that betograve "...involves first pouring concrete into a form tightly packed with gravel, and, once set, precisely

sand-blasting Sandblasting, sometimes known as abrasive blasting, is the operation of forcibly propelling a stream of abrasive material against a surface under high pressure to smooth a rough surface, roughen a smooth surface, shape a surface or remove sur ...

the surface of the concrete to expose the gravel beneath it". This "unique system of concrete placement" was first used by

Carl Nesjar Carl Nesjar (né Carlsen; 6 July 1920 – 23 May 2015) was a Norwegian painter, sculptor and graphic artist. He is best known for his collaborations with Pablo Picasso; serving for nearly twenty years as Picasso's chosen fabricator — the art ...

, a Norwegian painter, printmaker and sculptor. When Nesjar introduced the technique to

Pablo Picasso Pablo Diego José Francisco de Paula Juan Nepomuceno María de los Remedios Cipriano de la Santísima Trinidad Ruiz y Picasso (25 October 1881 – 8 April 1973) was a Spanish painter, sculptor, printmaker, Ceramic art, ceramicist, and Scenic ...

, Picasso created a sculpture based on his folded sheet metal "Head of a Woman" ("Tête de femme"). The resulting piece "inaugurated a working relationship between Picasso and Nesjar that produced twenty-four works and lasted for the rest of Picasso's life".

References

Sculpture techniques {{Art-technique-stub