Build your professional network on facebook via our app Go to app
 
 
Posted in Community :

Construction Planning & Management

 
Asked by : shreedhar , sr.quality control engg, GCC
Industry : Construction
Functional Area : Quality Management
Activity: Question posted: 01 18 2010 10:50:33 +0000, 4 answers, 2135 views, last activity 05 31 2013 09:26:12 +0000
 
Share
 
 
  Rate : 
 
 

The water tank is built recently 3 month back.The capacity is 90000 gallans. The seepage is obsreved on the one of the wall very minor. The Redroc Plug from Fosrac Chemicals is used to arrest the same. After 24 hrs it is stoped but leakage is started from another part just 1.2 mtr from the earlier spot. So is there any solution to control such leakages without removing the water?  If so please advise me.

Thanks.

Shreedhar.

 
  Answered by     Tennyson Colaco, Proprietor, Hallmark Waterproofing Solutions  | 05 31 2013 09:26:12 +0000
[ Delete ]
[ Edit ]
Not Rated

Most viable way is to seal the crack with a flexible grout. Ideally a hydrophobic polyurethane Injection foaming grout followed by a resin injection would be the best solution and works  well if done while the tank is full as the crack is at its maximum state of expansion. Polyurethane grout will bond very well to the insides of the crack and when fully cured will create a sort of flexible gasket. This repair if done by an experienced person usually lasts a life time.

Renderoc plug is a hydraulic quick setting cement which is okay for temporary repairs and will give away sooner or later.

  Answer modified by     Ragavendran Ramkumar, Civil Engineer-Water/Wastewater, SAI SUDHIR INFRA LTD.  | 12 24 2012 13:52:57 +0000
[ Delete ]
[ Edit ]
Not Rated

The same issue I am tackling right now. Mark the points where water is leaking . Make a hole (by drilling )of 8mm dia. bit to 1/2 the thickness  of concrete . Keep a lesser dia pvc hose to half the depth of drilling and depth and apply quick setting cement on the peripery of hose . Leave it for a day to set. Mix cebex 100 (fosroc) 200gms pack/1 bag cement. Take ordinary cement and mix with water add cebex 100 in the said ratio. mix thoroughly in cement slurry. By using a grouting pump inject the slurry in the points where already hose was kept. The slurry will travel through the area where the concrete is pourous and fill those areas. Once the porous areas are filled the slurry will return back in the pump. Plug the end of the hose so that slurry doesnt come out. Repeat this excercise in places where leakages are existing. This is very effective .Try it out.- Ramkumar, Engineer 

  Answered by     Basab Ghosh, General Manager (Operations), Saipem India Project Ltd.  | 01 19 2010 18:07:47 +0000
[ Delete ]
[ Edit ]
Not Rated

Get a technical person from Fosrock to have a look at the issue. It could be because of not so dense concrete of the wall. Better solution could be to empty the tank and apply a latex based waterproofing membrane on the inside of the tank base and the walls up to a height above the maximum water level. Also seal the joints between the pipes and concrete wall from inside face with a sealant which does not become brittle when set and dry.

  Answered by     Pragya Kothari, Construction-Heavy, DLF  | 01 19 2010 14:06:24 +0000
[ Delete ]
[ Edit ]
Not Rated

I think the problem is with the pipe. It would be better if you get the pipe checked...

 
Leading Recruitment Firm
  • Create a confidential Career Profile and Resume/C.V. online
  • Get advice for planning their career and for marketing of experience and skills
  • Maximize awareness of and access to the best career opportunities
Viewers also viewed
Water entering in the basement through floor and a 3" to 6" layer of water completely cover...
 
13 referals 7 answers, 1388 views
Load Bearing Construction vs RCC frame construction
 
166 referals 40 arguments, 20858 views
WBM Vs WMM
 
0 referals 2 answers, 3242 views
more...  
Unanswered Questions (77)
Almost everything on the globe is provided with seasoned together with tailored today. Will...
 
0 referals 0 answers, 0 views
There is one case I am see now. One employee has received bad feedback and organization is...
 
0 referals 0 answers, 0 views
More From Author
Hello,   I do agree with Mr. Venkatesh, also i want to add some points. The soil investigation has to be made correctly and all structural designs shall impliment all the datas preiscribed by the SIR(Soil Investigation Report). But i india most...
Hello,      I do agree however the codes are the specific path to exicute in systimatic and compliance to international standards. Shreedhar.
The main priority to start the projectis. 1. Proper planning and adhere to it. 2. Selction of subcontractor shall be based on the all technical adviser rather than papers/documents. 3 Safety and Qualiy standards must be impliment. 4. Unwanted presure...
more...