we have got a problem with OPC cement silo which is the formation of lumps on the wall of silo. there are 3 types of cement manufactured which are OPC, SRC and OWC and that problem does only occur in OPC silos only.
This sounds like prehydration. You might be getting condensation on the inside of the silo (check to see if the clumping is occurring on a side which cools more than others). Or if you are grinding the clinker with gypsum while the clinker is still warm this may lead to water vapour being released.
Try analysing the clumped cement. If there is portlandite or ettringite present, then prehydration is hte likely cause.
Dear Kawthar Al-Balushi
Maybe this can serve you
document of the following link
https://es.slideshare.net/pradeepdeepi/lump-formation-in-cement-silo
1- High mositure lead to cement material more sticky
2- High temperature of cement lead to increasing electrostatic force between cement particales
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