Study of the Influence of an Air-Entraining Agent on the Rheology of Motars Nadia Tebbal, Zine El Abidine Rahmouni and Lamis Rabiaa Chadi MATEC Web Conf., 149 (2018) 01054 Published online: 14 February 2018 DOI: 10.1051/matecconf/201814901054