Free 186 More Best Homemade Tools eBook:  
Get 2,000+ tool plans, full site access, and more.

User Tag List

Results 1 to 7 of 7

Thread: Vibrating concrete screed - GIF

  1. #1
    Content Editor
    Supporting Member
    Altair's Avatar
    Join Date
    Aug 2013
    Posts
    11,730
    Thanks
    1,353
    Thanked 29,267 Times in 9,726 Posts

    Vibrating concrete screed - GIF


    186 More Best Homemade Tools eBook

  2. The Following 3 Users Say Thank You to Altair For This Useful Post:

    Floradawg (Jun 20, 2021), mwmkravchenko (Jun 20, 2021), nova_robotics (Jun 19, 2021)

  3. #2
    Supporting Member metric_taper's Avatar
    Join Date
    Mar 2017
    Location
    Marion, Iowa
    Posts
    585
    Thanks
    227
    Thanked 257 Times in 153 Posts

    metric_taper's Tools
    Is this a gas powered weed wacker with an eccentric spinning weight? The power head is hidden by his coat and belly.

    2000 Tool Plans

  4. The Following 2 Users Say Thank You to metric_taper For This Useful Post:

    mwmkravchenko (Jun 20, 2021), nova_robotics (Jun 19, 2021)

  5. #3
    Supporting Member
    Join Date
    Sep 2018
    Posts
    2,123
    Thanks
    9,992
    Thanked 1,133 Times in 609 Posts

    nova_robotics's Tools
    Quote Originally Posted by metric_taper View Post
    Is this a gas powered weed wacker with an eccentric spinning weight?
    I think you nailed it. That's exactly what it looks like.

    Also there's way too much water in that mix.

  6. The Following User Says Thank You to nova_robotics For This Useful Post:

    mwmkravchenko (Jun 20, 2021)

  7. #4
    Supporting Member
    Join Date
    Apr 2014
    Posts
    394
    Thanks
    179
    Thanked 186 Times in 96 Posts

    Gadgeteer's Tools
    Quote Originally Posted by nova_robotics View Post
    I think you nailed it. That's exactly what it looks like.

    Also there's way too much water in that mix.
    What is the result/consequence of too much water?

  8. #5
    Supporting Member
    Join Date
    Sep 2018
    Posts
    2,123
    Thanks
    9,992
    Thanked 1,133 Times in 609 Posts

    nova_robotics's Tools
    Quote Originally Posted by Gadgeteer View Post
    What is the result/consequence of too much water?
    Everything gets worse. Lower strength. All the aggregate settles out to the bottom. Prone to cracking. I think it screws up aeration too (which is super important with concrete). Just generally results in junk. A soupy mess like that is the mark of a bad contractor.

    The ideal concrete mix, for maximum strength, is so dry you'd probably never want to use it. You have to add a bit more water than that just for it to be workable. And paradoxically once it sets up you want to keep the concrete as wet as possible while it cures. Concrete is weird.

  9. The Following 3 Users Say Thank You to nova_robotics For This Useful Post:

    Gadgeteer (Jun 20, 2021), milla (Jun 26, 2021), mwmkravchenko (Jun 20, 2021)

  10. #6
    Supporting Member Frank S's Avatar
    Join Date
    Aug 2015
    Location
    Peacock TX
    Posts
    11,179
    Thanks
    1,974
    Thanked 8,766 Times in 4,195 Posts

    Frank S's Tools
    In the very beginning of the video you can see the gas tank of the power head
    Agreed there is way too much water in the mix, I've seen thicker mixes come out of a pumper hose
    Never try to tell me it can't be done
    When I have to paint I use KBS products

  11. The Following 2 Users Say Thank You to Frank S For This Useful Post:

    mwmkravchenko (Jun 20, 2021), nova_robotics (Jun 19, 2021)

  12. #7
    Supporting Member mwmkravchenko's Avatar
    Join Date
    Nov 2017
    Location
    Perth Ontario Canada
    Posts
    1,001
    Thanks
    5,080
    Thanked 370 Times in 262 Posts
    Quote Originally Posted by nova_robotics View Post
    Everything gets worse. Lower strength. All the aggregate settles out to the bottom. Prone to cracking. I think it screws up aeration too (which is super important with concrete). Just generally results in junk. A soupy mess like that is the mark of a bad contractor.

    The ideal concrete mix, for maximum strength, is so dry you'd probably never want to use it. You have to add a bit more water than that just for it to be workable. And paradoxically once it sets up you want to keep the concrete as wet as possible while it cures. Concrete is weird.
    Flow agent is your friend. Water your enemy. If you have the right flow agent is is super easy to work and yet will be as strong as it can be.



    186 More Best Homemade Tools eBook

  13. The Following User Says Thank You to mwmkravchenko For This Useful Post:

    nova_robotics (Jun 21, 2021)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •