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Have you ever seen workers cutting open a ReadyMix concrete drum to remove hardened concrete? This happens when the concrete inside the mixer truck cannot be pumped out, leading to severe wastage and operational delays.

What is the Issue?
In this case, the ReadyMix concrete inside the container remains in good condition in some parts, but it cannot be pumped out properly. Workers are forced to cut open the drum or even use excavators to remove the hardened concrete manually.

Possible Reasons:
✅ Excessive Transit Time: If the concrete remains in the truck for too long, it may start setting inside the drum.
✅ Segregation of Concrete: Poor mixing or long waiting times can cause heavier aggregates to settle at the bottom, blocking the pump.
✅ Hardened Residue at the Outlet: If leftover concrete from previous batches sticks inside the outlet, fresh concrete flow gets obstructed.
✅ Pump Line Blockage: A clogged pump or dry patches inside the pipeline can prevent concrete from flowing.
✅ Low Workability: If the mix has a low slump or improper water-cement ratio, it won’t flow smoothly.
✅ Air Pockets or Improper Priming: Air trapped inside the pump line can create resistance, stopping the pumping process.

This is why proper mix design, transit timing, and equipment maintenance are crucial in ReadyMix concrete operations.

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