 In 1951, in company with several artists, Bloc formed the group Espace.Its goal was to bring the ideals of constructivism and neo-plasticism to urbanism and the social arena.Artists and urbanists such as Jean Dewasne, Etienne Bóthy, Jean Gorin, Félix Del Marle, Edgard Pillet, Victor Vasarely, Sonia Delaunay, Nicolaas Warb (née Sophie Warburg), Simone Servanes and Nicolas Schöffer were members of the group, which considered architecture, painting, sculpture and art in general as a social phenomenon.