Extrusion Criterion for Firm Cement-based Materials

Applied Rheology

Lanos Christophe¹  Mélinge Yannick¹  Estellé Patrice¹  Rangeard Damien¹  Perrot Arnaud² 

[1] UEB-LGCGM, EA 3913, INSA/IUT de Rennes, France;UEB-LIMAT B, Université de Bretagne Sud, Centre de Recherche de St Maudé, 56321Lorient, France;

关键词: drainage;    extrusion;    filtration;    mortar;   

DOI  :  10.3933/applrheol-19-53042

来源: DOAJ

【 摘 要 】

The stability of the flow induced by the extrusion forming process of a cement based material is largely influenced by the relative migration between the lubricating liquid phase and the granular skeleton. In the present work, we propose linking rheological concepts and soil mechanics (consolidation theory, Darcy’s law) to reach a simple criterion which predicts the extrusion ability of a mortar. Extrusion tests on studied mortar are performed at different ram velocities for criterion validation.

【 授权许可】

Unknown