Marsh cone coupled to a plexiglas horizontal channel: Rheological characterization of cement grout

International audienceThe apparition of a wide generation of mineral powders industrially mastered (like silica fume and limestone filler) and organic products (particularly the superplasticizers) increases significantly the range of rheological performance of concrete. Varying the dosage of superplasticizer, the type and the amount of mineral powders, this experimental study consists of measuring the cement grout flow time and the visualization of its flow profile using a new experimental tool: Marsh cone coupled to a Plexiglas horizontal channel. Then, the rheological properties of this grout are studied by means of a rheometer with vane spindle. The comparison between experimental results and rheometer measurements allows us to confirm the ability of the used approach. To characterize the fluidity of cement grout, the results show that this approach can replace the rheometer. (C) 2015 Elsevier Ltd. All rights reserved