Newly cast concrete quay

[PRonnmark]

After casting a concrete quay partially adjacent to water (Stockholm archipelago), several cracks have appeared, see image. Besides not looking good, the question is whether we should be concerned about issues such as frost damage. We have not made the final payment to the contractor, and now they want to apply Betasil. What do you think, should we approve the job? Similar cracking patterns are found in 5 places.

 

[klaskarlsson]

After casting a concrete quay partially connected to water (Stockholm archipelago), cracks have formed in several places, see image. Besides the fact that it doesn't look good, the question is whether we should worry about, for example, frost damage... we haven't made the final payment to the contractor and now they want to apply Betasil. What do you think, should we approve the job? Similar crack patterns are found in 5 places.

Reading up on Betsil, that's exactly what the product is designed for.
Apparently, it is supposed to penetrate 2 cm into the concrete and crystallize there.
However, I have no idea about its durability outdoors, in harsh climates, etc...

https://betsil.se/

 

[PRonnmark]

Okay, thank you forsvaret, any comment on the cracks themselves should one approve this?

 

[Carl Johansson]

Can't you get hold of an expert to inspect/inspect the work?

 

[PRonnmark]

Can't you get hold of an expert to inspect the work?

Yes, if I pay about 8000kr and arrange transportation to an island in the archipelago... not quite ready for that yet.

 

[neo11]

Was the concrete well reinforced in the mold?
I would worry a little about the future, get an inspector there.
However, I think it just dried too quickly in the heat.
Did you water them afterwards and lay plastic on the concrete after casting?

 

[PRonnmark]

Yes, I believe it was, apparently special concrete that didn't need to be vibrated or watered.

 

[PRonnmark]

Okay, thanks for the advice, I will look into it further.

 

[neo11]

All concrete needs to retain moisture, no matter what. Applying plastic afterward reduces the risk of cracks.

 

[Matti_75]

Yes, I believe it was, apparently special concrete that didn't need to be vibrated or watered

The concrete known as SKB is usually advised against being poured in such constructions as it has a greater tendency to crack. Those cracks are too wide to be left untreated as water will seep in, causing the rebar to rust and frost damage can occur.

 

[PRonnmark]

The concrete called SKB is usually not recommended for casting in such constructions as it has a greater tendency to crack. Those cracks are too wide to leave untreated because water can penetrate and the reinforcement starts to rust, and frost damage can occur

Thanks for the information, they say they will apply Betsil to seal the cracks, but I don't know if that's enough...
I don't know what should be done, you can't just redo concrete, or they might have to cast another layer.

 

[Matti_75]

Betsil doesn't do anything to the cracks. It's just a dust binder.