Concrete is a unique material that is used.in construction. It can be used when laying the foundation of buildings, as well as its individual components. You can also make piece objects from it, for example, paving slabs, table tops, balusters, vases, etc.
Concrete is made using modern technology.which allow to make it similar to natural analogues like marble or granite. By its appearance, concrete is not sufficiently attractive as the solutions mentioned above, but it is inexpensive, has outstanding qualities and is not radiation. If you decide to abandon the purchase of ready-made mortar, then you need to familiarize yourself with the ratio of cement, sand and rubble in concrete.
The preparation process is quite simple.however, it is necessary to take into account some features and moments that determine the suitability and quality of the material. Depending on what goals the master adheres to, the recipe and method of preparation may vary.
The simplest option is concrete.from coarse sand and cement mortar. This composition is used as a preparation for the base. Shut it some at the bottom of the formwork. At the same time, water is added in an insignificant amount so that the mixture becomes dense, like that of a moistened soil. Durability in this case will not be achieved, however, it will be possible to make a solution that will protect the main foundation from moisture and sagging.
If the output needs to get more durableconcrete, you can use crushed stone as a filler, the fraction of which varies from 20 to 35 mm. The final quality of the concrete will depend on the composition and purity of the components.
The ratio of cement, sand and rubble in concrete will bevary, depending on the goals. For the formation of the foundation requires durable concrete, which provides for the presence of coarse gravel with elements, the size of which reaches 35 mm. The composition should be fluid, for which the concrete should be compacted and rid it of air bubbles. You can do this manually.
Before you pour the solution, you mustto equip the substrate. For this purpose, concrete is used with not so impressive indicators of strength - B7.5. In addition to the cement slurry, there may be coarse sand in its composition. For this mixture, the consistency should be non-fluid.
Choosing the ratio of cement, sand and rubble inWhen preparing concrete for a foundation mortar, you must remember that the mortar should be made liquid, and the aggregate should have an average fraction. This will ensure that the mixture is easily spread over the surface in a thin layer.
Medium and fine aggregate fractions are irreplaceable.when forming balusters, as well as some elements that can become part of the decor. The composition of concrete ingredients is determined by state standards 7473-94. It is important to take into account the density of ingredients and the average density of concrete, which are determined in each specific situation. After calculating the ratios, you can begin the preparation and pouring of concrete.
Если вас интересует соотношение цемента, песка и rubble in concrete, before you have to decide which brand of cement will be used. If it is M400, then in order to obtain concrete of M100 grade, it will be necessary to combine cement, sand and crushed stone in ratios: 1: 4.6: 7. If cement is used in a volume of 10 liters, then 41 liters of sand and 61 liters of crushed stone should be prepared. This will allow you to get 78 liters of concrete, if you use cement, the volume of which will be 10 liters.
If you wondered whatthe ratio of cement, sand, crushed stone in concrete, you should also consider the grade of concrete M150. The above ingredients in the same sequence are added in the following form: 1: 3.5: 5.7 parts. 32 liters of sand and 57 liters of rubble will require the same volume of cement. From cement, the volume of which is limited to 10 liters, you can shut 64 liters of concrete.
If necessary, obtain concrete brand M450you should add cement, sand and crushed stone in proportions that look like this: 1: 1,1: 2,5. The volume of cement mentioned above will require the same amount of sand and 22 liters of rubble. From the cement of the above volume will be 29 liters of concrete.
Quite often beginner home mastersThey are interested in the percentage of concrete. Cement, sand, crushed stone are added in the following proportions: 1: 5,8: 8,1, which is true if you need concrete M100 for the work. At the same time, sand and rubble are combined in proportions of 53:71, if 10 liters of cement are used. Concrete from a fixed volume of cement can get 90 liters.
If the design requires concrete grade M250, thencement, sand and crushed stone must be combined in this way: 1: 2,6: 4,5. 24 liters of sand and 39 liters of rubble will be needed if you use the same 10 liters of cement. In the end, it will be possible to get 50 liters of concrete. If you are also interested in the ratio of cement, sand, crushed stone in the preparation of concrete, you can also consider the proportions for the brand M450. Cement, sand and crushed stone are added in the following relations: 1: 1,4: 2,9. 12 liters of sand and 25 liters of rubble will go to the volume of cement specified in the article. As a result, it will be possible to get 32 liters of concrete.
The most common proportions are:1, 3 and 6 parts of cement, sand and aggregate, respectively. In this case, you will need 1 part of water. The liquid can be added in the amount of 0.5 parts, which is true if the solution should turn out to be less fluid.
After calculations it is necessary to determine the methodwhich will measure the components. You will only be aware of the weight and volume values, which are sometimes incompatible with those in reality. This is because sand, for example, can be quite wet or completely loose. That is why a ten-liter bucket will not contain the weight recommended by the ratio.
Sand and gravel before preparing concreteIt is recommended to dry better than trying to calculate the number of servings of ingredients. In order to understand what the friability is and bring out the portions, it is necessary to weigh each ingredient in relation to one volume. Thus, you should take a suitable container and fill it with sand without tamping. The same should be done with cement and aggregate.
Теперь вам известно, каковы пропорции песка, rubble, cement, water in concrete. But in the process of mixing it is best to use special equipment, such as a concrete mixer. With its help, quickly and efficiently it will be possible to get concrete of uniform consistency. It will not delaminate and will not grab before the time, as can happen with the manual method of mixing components. If you decide to prepare concrete, the proportions of rubble, sand, and cement, first of all, need to be studied and only after starting work. All dry ingredients are mixed, and then water is poured.
