rheology is always a factor as head-loss in a pipe is not just dependent on the height between the pump and where it is applied , as there is also head loss with pipe friction , the longer and smaller diameter the pipe the more pipe friction , for the same fluidity of material .
Then if you take into consideration fluidity , if you can pump more through a smaller pipe by using edencrete or another admixture then their is improved productivity
https://barchip.com/mining/
Then there is the other attributes edencrete brings , no need for glass fibre and improving flexural and tensile strength as the CNTs are a decent substitute may also mean centres between rock bolts and cable bolts can be increased . CNTs do not rust , ie the Kundana mine has an issue with rust/scale the surface area to volume ratio of steel fibre accentuates the speed rust has in compromising steel
I have shares in a company that has part ownership of that mine
page 169
https://www.researchgate.net/public...rock_reinforcement_in_underground_excavations
Ann: Trading Halt, page-87
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