In June 1898, François Hennebique issued the monthly journal Le Béton Armé. Published until 1939, with 378 issues in all, this platform on the interface between information and propaganda serves as a perfect means to obtain a comprehensive overview of Hennebique’s legacy. Giving an insight into the increasing sphere of action, the growing number of applications and the hierarchic structure and policy of the firm, the journal is a work of reference, essential to document the unremitting development of concrete construction. By means of a close reading (based on the collections preserved at Ghent University and the Centre d’archives du XXe siècle de l’ifa in Paris), the content, meaning, and changing discourse of Le Béton Armé will be critically analyzed. Fitting within the scope of a PhD on the history of concrete construction in Belgium (www.architecture.ugent.be/concrete), particular attention will be given to the application of ‘le système Hennebique’ in Belgium.