We also remarked that if the water/sludge ratio is below 0.6, the MSGs no longer flow, they are not deformed under the effect of its own weight, and its Marsh funnel viscosity tends to move towards infinity.
Marsh funnel time provides a single data point that cannot be used alone to specify the grout rheology.
Caption: Figure 7: Marsh funnel flow time of different MSGs.
Grout Water/sludge e Density reference (micron) [d.sub.Exp] [d.sub.The] MSG1 0.6 1.010 1.62 1.646 MSG2 0.8 1.439 1.52 1.536 MSG3 1 1.862 1.45 1.457 MSG4 1.2 2.285 1.395 1.399 MSG5 1.4 2.708 1.35 1.354 MSG6 1.6 3.132 1.30 1.318 MSG7 1.8 3.555 1.27 1.289 MSG8 2 3.978 1.25 1.264 Volume Grout concentration reference of solid [([V.sub.c]).sub.Exp] [([V.sub.c]).sub.The] MSG1 0.376 0.382 MSG2 0.313 0.317 MSG3 0.269 0.271 MSG4 0.235 0.236 MSG5 0.209 0.209 MSG6 0.185 0.188 MSG7 0.168 0.171 MSG8 0.1548 0.156 Table 9: Marsh funnel flow time and equivalent viscosity of different MSGs.
The fluidity, the outflow time, and the outflow rate were evaluated with three pieces of equipment: Spanish Cylinder, Kantro's Cone, and Marsh Funnel (Figure 3).
SLM fluidity of mortars was evaluated with Spanish Cylinder (Figure 3(a)) and Kantro's Cone (Figure 3(b)), and the outflow time and outflow rate tests were made with the Spanish Cylinder (Figure 3(a)) and Marsh Funnel (Figure 3(c)).
The Spanish Cylinder and Marsh Funnel were used to determine the SLM outflow time (t) and the SLM outflow rate (ml/s).
The Spanish Cylinder had a mortar volume of 254.34 ml, and the Marsh Funnel had a mortar volume of 800 ml.
The variation in viscosity on P15, C15, P25, and C25 was not clearly observed in the Marsh Funnel tests.
The difference between the Spanish Cylinder and the Marsh Funnel outflow time results can be due to the geometric shape and volume of each equipment.