Water leakage from the Swimming Pool

Dear S K Agarwal

             For solving the leakage problem, one should firstly know the cause of leakage. The leakage may be from the joint of vertical wall and floor or through the floor strata if floor concrete is not properly mixed and vibrated at the time of laying or leakage through the joints of floor tiles or similar problem may be with the vertical walls. The other cause of leakage may be through the supply and disposal pipes because when pipes are not fixed during construction then there may be chance of leakage around the pipes.When pool is empty than minutly check the joints. Take help from local civil engineer or from experienced mason.                                                                                                                                         

Water leakage is not from pipe joints rather from inappropriate mixing of concrete and also insufficient running of vibrator at the time of construction. The Swimming Pool walls and floor are on 7" wide double saria structure. Concrete was used. It means all wall about 9" thick.

Since, vibrator was not used for sufficient time and correctly, hence there are voids and gaps within the concrete. We can also say "honeycomb".

During last 3 years, we have tried to fill those gaps via grouting, putting nozzles and pumping cement slurry in those nozzles. Problem has been minimized but still, we could not solve the problem 100%.

Your comments will be appreciated. Thank you

Dear S.K Agarwal

    Please write about what kind of flooring you have laid on floor and vertical walls concrete after that I may be able to any conclusion. More ever I cannot under stand about grouting either you grout whole the surface after breaking flooring or at some point where you feel more leakage or you have not laid any type of flooring on the concrete. write in detail.

Dear Mr. S L Gupta

Grouting means putting nozzles at certain distances. You are using chisel and hammer to jam these nozzles and cement slurry with chemical is pumped through these nozzles after jamming them. There is a time gap of 24-48 hours between jamming and filling the nozzles with the slurry. The slurry is filled with a hand pump under pressure. Thus, slurry fills all voids or gaps in the concrete structure. The method is by chance and no one knows that where exactly are the gaps in the concrete structure.

We did plastering only on the concrete structure. But, since water was going between the concrete structure & the plaster hence we have to remove this plaster. The plaster had swollen up. At present there is no plaster and no tiles either on walls or in the floor.

Once this problem of water leakage get solved then we intend to do plastering once again and also, would like to do tiling work using 25 mm x 25 mm small glass tiles.

Dear S K Agarwal

                 After reading the contents, I am in the view that you should do the following treatment.

1. Remove all the plaster from wall and floor, roughened the surface and clean the surface by wire brush and wash it with broom.

2. Kept the surface wet, apply cement shuullary and lay 25mm to 40 mm thick cement concrete 1;2;4 with coarse sand. The mix of cement concrete should be in workable not so hard or not in a state of bleeding. The mix should be rammed by wooden float and rough finished. After laying concrete start flooring of jointless tilesi.e. having minimum joins. Tiles should be laid in cement mortar 1;3 with coarse sand and joints should be properly filled with cement shullary. Also fix tiles on the wall by applying cement shullary and 12mm cement mortar1;3 with coarse sand and joints properly grouted with cement shullary. Kept the surface wet at least for 3 days.Care should be taken that start tile laying on the next day after laying cement concrete and coarse sand should be free from silt or use it after washing, mason should be exprienced one.

Dear Mr. S. L. Gupta

Thanks.

1. Can this problem be solved using nozzles grouting or no?

2. By plastering and also, using liquid cement or "GHOLA" on the top of concrete laid earlier (which already has cracks, honeycomb, voids inside) can the problem of water leakage be solved? After all water will pass from the top most layer.

3. For laying glass tiles, cement mortar can not be used. We always use Balsom Endura which is a white adhesive. It comes in form of white powder. Use of cement gives cracks in these tiles.

Best regards,

S K AGARWAL