caa a22 4500 46323331X CHVBK 20180405153249.0 cr unu---uuuuu 170326e20070701xx s 000 0 eng 10.1007/s10853-006-0645-z doi (NATIONALLICENCE)springer-10.1007/s10853-006-0645-z Reinforcement of hydrated portland cement with high molecular mass water-soluble polymers [Elektronische Daten] [Richard Morlat, Gilles Orange, Y. Bomal, Pierre Godard] A small amount of polymer in water solution form (polyvinylpyrolidone or polyvinylalcohol) was added to a mix high silicate cement + amorphous silica, with reduced water to cement ratio. It was shown that as the molecular mass of the polymer is increased, the fracture stress and the stored energy at fracture of the specimens improved. The polymer induces an increase of the critical stress intensity factor (K Ic ) (crack initiation). The fracture behaviour of the polymer modified cement paste beyond the elastic domain is also affected by PVA or PVP additions. The dissipated energy measured using the crack opening displacement CMOD was increased by a factor of two with 4wt% of PVP and by a factor of three with 3wt% of PVA, as a consequence of operative toughening mechanisms. The increase of mechanical properties is explained in case of PVP by crack interactions due to CSH microstructure modifications, and with PVA by crack bridging mechanisms as a consequence of dispersed polymer rich nodules in the hydrates phase. Springer Science+Business Media, LLC, 2007 Morlat Richard Université Catholique de Louvain, Unité de Physique et de Chimie des Hauts Polymères, Place Croix du Sud, 1, 1348, Louvain-la-Neuve, Belgium aut Orange Gilles Rhodia Recherche & Développement, 52 rue de la Haie Coq, 93308, Aubervilliers, France aut Bomal Y. Rhodia Recherche & Développement, 52 rue de la Haie Coq, 93308, Aubervilliers, France aut Godard Pierre Université Catholique de Louvain, Unité de Physique et de Chimie des Hauts Polymères, Place Croix du Sud, 1, 1348, Louvain-la-Neuve, Belgium aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/13(2007-07-01), 4858-4869 0022-2461 42:13<4858 2007 42 10853 https://doi.org/10.1007/s10853-006-0645-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0645-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Morlat Richard Université Catholique de Louvain, Unité de Physique et de Chimie des Hauts Polymères, Place Croix du Sud, 1, 1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 700 1- Orange Gilles Rhodia Recherche & Développement, 52 rue de la Haie Coq, 93308, Aubervilliers, France aut NATIONALLICENCE 700 1- Bomal Y. Rhodia Recherche & Développement, 52 rue de la Haie Coq, 93308, Aubervilliers, France aut NATIONALLICENCE 700 1- Godard Pierre Université Catholique de Louvain, Unité de Physique et de Chimie des Hauts Polymères, Place Croix du Sud, 1, 1348, Louvain-la-Neuve, Belgium aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/13(2007-07-01), 4858-4869 0022-2461 42:13<4858 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer