Concrete pool water fill rate
Concrete pool water fill rate
(OP)
I am looking for some advice on the rate to fill a concrete pool tank with water. I am working for a general contractor that is currently constructing a building that contains a commercial indoor pool.
The concrete reinforced pool is 20 000 x 25 000 in size with a capacity of 960000 liters/ 253605 gallons. The pool needs to be filled with water, and tested for leaks over a duration of 7 days. The time it takes to fill the pool is critical as it directly affects the construction schedule. The pool needs to get filled and the test started/witness before the winter holidays.
I have access to a 4" domestic water line that is roughly 8 Celsius/45 Fahrenheit, the concrete shell is indoor with the temperature around 18 Celsius/65 Fahrenheit.
Would filling this pool with cold water too quick cause a rapid change in the concrete pool shell temperature? Could this cause the concrete to contract and crack? If the water is heated close to room temperature would it increase the fill rate?
The concrete reinforced pool is 20 000 x 25 000 in size with a capacity of 960000 liters/ 253605 gallons. The pool needs to be filled with water, and tested for leaks over a duration of 7 days. The time it takes to fill the pool is critical as it directly affects the construction schedule. The pool needs to get filled and the test started/witness before the winter holidays.
I have access to a 4" domestic water line that is roughly 8 Celsius/45 Fahrenheit, the concrete shell is indoor with the temperature around 18 Celsius/65 Fahrenheit.
Would filling this pool with cold water too quick cause a rapid change in the concrete pool shell temperature? Could this cause the concrete to contract and crack? If the water is heated close to room temperature would it increase the fill rate?





RE: Concrete pool water fill rate
RE: Concrete pool water fill rate
As for the concrete... as hookie said, is this pool over 7 days, over 28 days?
45 degrees is no colder for the concrete than when it was first made (an unconditioned building most likely). Based on that fact, i am not really concerned with shrinkage.
RE: Concrete pool water fill rate
The pool was cast in 2 pours. The slab was poured monolithically with no joints or sawcuts, just a keyway with a pvc waterstop. The walls were also cast monolithically with no joints. Both the slab and walls were wet cured for 7+ days. The top 4'/1200 of the walls were recessed to allow room for a 1"/25mm parging to be applied later. The parging has been completed and waterproofing is currently being applied ontop of the parging.
The domestic water pressure is quite high which is around 70 psi, the size of pipe can be reduced. I will time how long it takes to fill a drum and get a precise gallons per minute.
I was concerned about how the concrete would be affected, after typing this I am also considered how the parging material will react if there is a rapid change in temperature from the influx of cold water.
RE: Concrete pool water fill rate
What type waterproofing? The interaction of moisture in the parging, with the waterproofing, would be a big concern. I trust this has been considered by the waterproofing applier.
I think your concerns about rate of filling and water temperature are misplaced.
RE: Concrete pool water fill rate
RE: Concrete pool water fill rate
The blockouts are located at the very top of the wall and are about 100x100x wall depth. I do not believe there is any added corner reinforcing.
The parging and waterproofing products are all part of a system by Laticrete which is designed to be used in pool tanks. It consists of 3701 modified mortar (base), 254 platinum (skim coat), hydroban (waterproofing). The hydroban waterproofing uses reinforcing fabric all corners and cracks before the membrane is applied.
RE: Concrete pool water fill rate
If the waterproofing system works as intended, I doubt the cracks matter. The reinforcing fabric is a good idea.
RE: Concrete pool water fill rate