 The use by American artists of “modified” Ready-made objects as part of their artistic works, and the abstract styles known as “Tachisme” and the French “Informel,” combined in Aroch's work in a delicate style that became known as “concrete abstraction.” For Aroch and his interpreters the meaning of this style was a combination of figurative images that had a symbolic meaning for the artist, and design as abstraction in order to create a new, independent form.Among his well-known works of this period is a series of paintings known as “Tzakpar” that Aroch began painting in 1961.These works are based on an image from a shoemaker's sign from Aroch's memory, an image of a boot, which Aroch recalled from his childhood.