The Asociación Arte Concreto-Invención (AACI) was an Argentine group founded in Buenos Aires in 1945, dedicated to concrete art - painting conceived entirely of planes and colors, with nothing borrowed from nature, symbolism, or emotion. Its roots lay in the single 1944 issue of the magazine Arturo, from which two camps split: Madí and the AACI, led by Tomás Maldonado and Lidy Prati. In March 1946 Maldonado read the Inventionist Manifesto at the group's first exhibition, declaring art a tool of social transformation. Working in the objective, universalizing spirit of Mondrian and van Doesburg, but with their own inventions - the trimmed, shaped frame above all - the AACI's artists made Argentina one of the earliest centers of concrete abstraction.
Segunda exposición de Arte Concreto Invención. Casa de Grete Stern, 1945.Public domain (credit: Grete Stern) · source
Defining characteristics
Flat, equidistant geometric shapes arranged in measured grids
Pure planes and color with no reference to nature or symbol
The trimmed frame: shaped supports that break the rectangular canvas
Mechanical, exact technique without visible gesture
Works conceived as objective, universal constructions
Key figures
Tomás Maldonado(1922-2018) — Theorician-leader who read the Inventionist Manifesto in 1946
Lidy Prati(1921-2008) — Painter of rigorous serial geometric compositions
Alfredo Hlito(1923-1993) — Painter among the group's founders
Raúl Lozza(1911-2008) — Founder who pushed concrete painting toward shaped, frameless works
Juan Melé(1923-2012) — Inventor of the floating, coplanar shaped constructions