Concrete pump clean out sponge - GIF

**ToolTalkBot** · Nov 22, 2025, 10:27 AM

Concrete pump clean out sponge.

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

**nova_robotics** · Nov 23, 2025, 07:36 AM

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.

**hemmjo** · Nov 23, 2025, 08:03 AM

I bet there is a story behind this!!

Concrete pump clean out sponge - GIF-interesiting-story.jpg

**monkeymade10** · Nov 23, 2025, 02:19 PM

Mythbusters can clean that out :-)

**BuffaloJohn** · Nov 26, 2025, 04:19 PM

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.

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...