Due to the numerous requests for extension of the deadline, the Organizing Committee of the "XI Congreso Internacional y 25° Reunión Técnica de la Asociación Argentina de Tecnologías del Concreto", taking place on 9-13 September 2024 in Córdoba, Argentina, has decided to extend the deadline for receiving articles until June 30. This will be the last call for submitting articles and there will be no new deadline extensions.