What should be the concrete for the pool for long-lasting service life ?

Where and how you need to use concrete for the pool?

Deciding to make a concrete pool, you must take into account the fact that its surface is constantly exposed to pressure and moisture.In addition, in our climatic zone rather cold winters, so the concrete must have a high resistance to frost.

base of the pool is done first from the "skinny" concrete.For this purpose, well suited inexpensive brand of cement, for example, M 100 .It has a sufficient level of quality and low price.To fill the walls and the bottom, you must use the best quality cement, for example, M 400 .This is important to consider the composition of the additive, it contains, for example, various mastic.For the final work it is recommended to use of cement with average characteristics, but which have a high degree of waterproofing.Experts advise for this purpose marks M 400 with a variety of additives.

Important!In order to lay down the concrete quality, and held fast, you need to pre-lay steel reinforcement.

What is the right mix?

consider in more detail the composition of the concrete for the pool.Existing requirements for materials:

• sand must be middle-largest granules from 1.5 to 2 millimeters, clean, free of clay and other foreign substances.Silty sand to use is not recommended;
• Rubble and gravel for concrete must be used exclusively from hard rock formations.Crushed stone is used with a small fraction of the size of 10-20 mm, without lumps and impurities;
• Cement should only be fresh, with a shelf life of three months.It is best to use a cement of 400 marks.Water should be soft and clean.Marsh water is very hard, it can not be used.

proportion of concrete mix should be as follows: 1: 3: 5.What is it that, for example, 25 kg of cement should be used 75 kg of sand and 125 kg of rubble.The amount of water is expressed as parts of the total weight of the cement.For good concrete resistance to water in the solution you need to add any hydro-technical supplement.She slipped into a solution before use, in the last instance.For one cubic meter of concrete shall be at 4 kg hydraulic material.

Note!Compliance with the exact proportions will guarantee that the concreting of the pool will be carried out reliably and durably.

cooking process

First mixed cement and sand in the above proportions.Further, this amount of water is added to the solution became like a creamy mass, then pour the rubble.If the solution is getting too thick, the sneaky water, it is important to make sure that it was not too much, because the excess water impairs the strength of the solution.At the end of the material is added to hydraulic engineering.Mix must be on a large wooden or metal sheet.

Note!The amount of the prepared solution should be such that it can be used for 30 minutes.

If you have a concrete mixer, the cooking process is much easier.mixing in a concrete mixer technology differs from the previous method.First of all pouring water, then poured concrete and rubble.The amount of water will depend on the volume of the tank, but the proportion of 1: 3: 5 should not break.For example, you fall asleep 10 kg of cement into the mixer, then, on the proportions necessary to add 30 kg of sand and 50 kg of rubble.When the solution is almost ready, pour hydroengineering additive.Portions of the finished concrete will be fully depend on the tonnage mixer.