Repairing of Cracks

I am not quite sure what it is you've done regarding the repair of the crack in your water tank and what you want this forum to do for you.

You must be much much clearer in your language describing what was done to the tank. Also, it'd help if you posted diagrams, sections, details and photographs of the crack and attempted repair in your next posting. Make sure that you use better English grammar as well, then we can have some hope of helping you!

Hi CM,

This sounds like another student trying to get us to do his homework. If he can't even tell us what material the tank is made of, how would we ever succeed in answering the question with language he would comprehend?

TMF

i'm not familiar with the system that you're trying to use. is it mandated by local codes? i've always had excellent results with b-bond concrete. it's available by the sack. it's very safe and approrpiate for pottable water. cleaning the old surfaces is critical.

Dear CaptMossie,

As I mentioned that we had craks at our Water Reservoir, Then we made the Crack like a U-Shaped Cross Section(As shown in the Pic), then we used HILTI Crack Injection System(CC412-1 primer, CI 060 EP) to fill the cracks but unfortunately the cracks could not be filled with the material because the surface was not level, so I share this topic to have a solution for this problem. this is in ADU Project Kabul Afghanistan under supervising of AMEC Earth & Environmental(For your Certainty).

Hot "Bitumen or Coal Tar" pumping should solve your problem. This technique is used in large dams at Construction joints. All the best!

Probably not suitable if the water is potable. This was a method used in the past, but newer legislation will not permit current use due to long-term leaching.

Might still be legal in India.

I do not know new rules. I have seen this during 1979 - 1984 when I was working in a masonry Dam Project. I was then Tower crane erection engineer.

Thanks for the GA (whoeva)

This is a case of the OP not getting back to us. I am not even sure if this way of approaching the problem has helped. It would be just good manners to do so. Whichever way. Maybe he is really busy.........

Yes, we did it this way or are using this or that sealant. No, we couldn't do it because...whatever reason.

I still don't know the size of the tank nor if he can drain, pump it into another or if he has someone that can hold his breath for a while and use under water tools. Nothing, just a request for help and then "see Ya's later", or, not even that.

I could have replied to the OP but I just love talking to myself.

Good to be here anyway, Ky.

I work for a company that specializes in this type of situation.

Send me your details and I can propose a solution.

Art

Enertech, bu of Curtiss Wright.

Sir you don't say what the tank is made of & I can't see where in the world you are, but I have used a product called Devcon™ it repairs just about anything from cast iron to glass it comes in many forms, also where the crack is drill a small hole just past the end of the crack to stop it travelling before applying any sealer.

The picture is of concrete. Drill a hole in the concrete?

In similar situations we have used commercial products made of a mixture latex and sand. Such a waterproofing product will be most effective when applied to the inside of the tank when the wall is dry. The outside can be patched with hydraulic cement. Also, it is a good idea to "pin the crack by drilling a small hole at each end to keep it from propagating. All this assumes there is no major structural defect.

there is a crack fix compound by Quikrete called hydraulic Water-Stop instant plug cement.ds

Interesting development FYI.

In the past we have used some high early concretes in wet areas. Mixed success but mostly good. This cement is specifically designed for reservoirs where potable water is stored. Good luck.

reinforce the hilti with a twin stainless steel plates and through bolts, maybe a neoprene sandwich to help prevent crush of concrete,,
Mitch ret peug mech

Assuming the substrate is stable, epoxies might work. A company called Grancrete has suppliers of grancrete in various states. They have a product that cures quickly and is hard and stable like ceramic. It cures within 20 minutes. Polyethylene fibre reinforcement might also help reinforce the strength of the patch whatever you use. Here is a link for Grancrete: http://www.grancrete.net/

You might have to make the crack bigger but keying it out properly using shallow inverse v-cuts with cement blades would be the best way.

Good Luck.

Hilti would be a brand name epoxy. I think the issue is really with regards to the injector plate. The epoxy needs to be pressure injected into the crack. To fill the overlying void would be easily accomplished with a high strength mortar concrete patch mix. One question I would have is the hydraulic conductivity of the crack, is there fluid moving through from the other side such there could be hydraulic pressure directly on the patch, other wise make the patch with mortar, and if the crack propigates through pressure fill it with epoxy from the inside outwards later as needed.

Ha, ha! The OP is trying to get "crack" out of reservoir tank. This is a job for the DEA or equivalent.

Dear Eng.8528

our aim to help each other as much as we can , therefor: i would like to suggest using new material if injecting system is not working properly, i,m saying you can use the staycrist material as new and tested material personaly.

pls visit www.styadryinternational.com

it is australian technology and having small prunch in UAE - DUBAI.

WISHING U ALL SUCCESSFUL

Not a very subtle attempt to sell a specific product. However, if the information is available he may still find it suitable as a sealant. I would suggest researching the products and comparing multiple products from a variety of distributors.

Oh BTW the link is incorrect.

Dear sir,

Thanks for your suggestion but i dont know why that web site is not opening please check the add in order to complete the help

Thanks

dear eng.8528

pls find the correct web site .

www.staydryinternational.com ( UAE 0 abudhabi & dubai)

your problem can be solved

wishing you all the best