What did jean dubuffet use to create his sculptures?

Jean Dubuffet often used unconventional materials to create his sculptures, including found objects, concrete, and various mixed media. He was known for incorporating elements like tar, sand, and even industrial materials to challenge traditional notions of art. His approach emphasized texture and form, reflecting his interest in the raw and unrefined aspects of creativity. Dubuffet aimed to break away from the norms of fine art, celebrating the ordinary and the outsider's perspective.