Help - Concrete table with too much water...

[Sundmalm]

Hello,

I would really like to have your input regarding concrete tables.
Yesterday, I cast a terrace table in a mold, 180x180x5cm with reinforcement.
I used (unfortunately expensive) repair concrete to get an even and nice surface.

However, I completely misread the instructions on the package (25kg) and mixed in 2.8l of water instead of 2.1l.

Will I have problems? Can I fix this now during the curing phase, or is it a lost cause?!

Very, very grateful for any kind of tips, feedback, and comments.

Best regards, Martin

 

[Stefan N]

Did it get very watery when you cast?

 

[Sundmalm]

Yes, unfortunately it became a distinct water surface, which admittedly has now sunk a bit, but I would definitely say that it was quite slushy. Like wet clay roughly...

 

[Stefan N]

Now it is too late to do anything. Either you wait and see how it holds up or you wash it away immediately.

 

[Sundmalm]

OK... Are there any tips on knowing roughly when the burning is complete? Should the concrete change to a "different color" or something similar? I've searched around but can't find much on this when it comes to such a large area for a different use than floors...

 

[Stefan N]

Fairly strong after 2-3 days. Fully cured takes a couple of weeks.

 

[Sundmalm]

Ok. Thank you very much for the help!!
Best regards, Martin

 

[vectrex]

The concrete becomes weaker the more water you mix into it. However, I believe the strength of a table will still be sufficient; just be careful when handling it and ideally let it cure for a few extra days before demolding.

Having had a lot of water might actually have been good in this case because the concrete flows out better and you're likely to get a finer surface.

 

[Sundmalm]

Hello
I can say that it turned out extremely well. I can strongly recommend to others to throw in a little extra water if like me you are only building a table with a thickness of 4cm.

 

[vectrex]

Pictures would be nice!

 

[Fredrik.engdahl]

Pictures are a must, otherwise it didn't happen.

 

[matbanan]

Picture please

 

[Steerna]

Must have been an incredibly heavy table...
We cast a table with the dimensions 160 x 80 x 5 cm. That slab weighed 160 kg

 

[MaZtoR]

if it is 4 cm thick as written last, it should weigh around 300kg. If it is 5 cm as written first, it should weigh around 375kg.

 

[jeppeknaster]

As long as he hasn't gotten stuck under it.