In order for concrete to be kneaded independently, several points are needed. The main thing is quality, and a special construction recipe. Preparation of concrete is most often necessary in order to make minor household repairs. But if you are confident in your abilities, you can do more big works. Even build a house yourself. And so, in order to make concrete, you need to knead the mixture. Its composition must be made in accurate proportions, otherwise everything will be bad in the end.
And so, take sand, cement M400 price, gravel or gravel and water. Sand should not have hard grains. At best, if it is crumbly. It is impossible for the sand to have clay impurities. This will not allow the creation of a single mass of concrete. Sand is small and large. It must be used depending on the necessary viscosity of the solution. You can use a baby that remains from the processing of solid stony breed. Baby, by the way, sometimes, can be better in the foundation mixture than just sand.
If we talk about river sand, then it is perfect for the basis of a strong foundation in the construction of the house.
If the proportions are chosen correctly, then we get magnificent concrete. It is better to use M400 cement brand cement in the preparation of the mixture. If moisture remains in the cement, then it absorbs it well, taking it from objects. Moisture is also absorbed from the air.