Concrete pump clean out sponge - GIF

Concrete pump clean out sponge.

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Previously:

Moving a heavy concrete lid by kicking a pipe under it - GIF
Passing concrete to plasterers - GIF
Spin casting concrete drainage pipes - GIF
Throwing concrete up onto a wall - GIF
Upside-down concrete curb creation - GIF
Why Roman concrete was so durable - photo

There must still be some buildup and accumulation. What's the procedure to clean those things? There must be a maintenance schedule of some sort. Do you just run acid through it periodically to destroy the buildup? I'm curious now.

I bet there is a story behind this!!

Attachment 50051

Mythbusters can clean that out :-)

Quote:

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Originally Posted by nova_robotics

There must still be some buildup and accumulation. What's the procedure to clean those things? There must be a maintenance schedule of some sort. Do you just run acid through it periodically to destroy the buildup? I'm curious now.

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Most of the residue is cleaned out. What is left is thin and will sluff off or rub off when the new batch is run.

Here they use foam balls - kind of the consistancy of nerf balls - seen it on many a pour...