From school years it is known that the change of terms does not play a role for the result. But that's in arithmetic. But when creating concrete, there is a significant difference, depending on whether water is poured into cement or cement is poured into water. It depends on the quality of the original product.
By the way, many non-professional builders simply do not know the correct mixing sequence, some simply neglect it, considering such an order to be not fundamental. How to do it right, let's take a closer look at this issue together.
Preparing for concrete work
Everyone knows that concrete hardens quickly enough, so everything must be well prepared before mixing the ingredients. This refers to all the objects in which you need to pour the mortar: formwork, reinforcement cage, and the like.
It must be understood that different objects require concrete with different constituents. In order to make the concrete from which the path in the garden will be made must have one composition, the foundation is created with a completely different concrete, with other fillers. Fillers are used as follows:
- filler with a porous structure - expanded clay. It is light weight and inexpensive. Great for creating paths in the garden. The final product is not very durable, its advantage is low cost;
- small crushed stone (fine-grained). This material for concrete, which is used for serious structures, is durable and strong;
- concrete with iron ore is the most durable and dense. It is used for the most critical objects.
The more accurate the proportions, the better the concrete
When building houses with one or two floors, fine gravel is added to the solution. There is a proportion that has been proven for decades, which makes the product of the highest quality. It looks like this - 1:3:3, where, respectively, the first ingredient is cement, the second is crushed stone, and the third is sand.
For understanding, I will explain in a simpler way - one part of cement is mixed with three parts of crushed stone and three parts of sand. Approximately one part of water is also used. This is the fourth ingredient. The amount of water depends on the quality of the sand, since it is dry and wet. Therefore, it is necessary to evaluate its moisture content to determine the amount of liquid.
I can give you an example. Let's say that I need 50 liters of solution. To do this, I take cement in the amount of one twelve-liter bucket, three buckets (36 l) of the same volume of crushed stone and the same number of liters of sand (36 l). I prepare water in the volume of a bucket (12 liters), but often I use only about 10 liters.
The mixing algorithm is as follows:
- water is poured into the concrete mixer - about 10 liters. About a couple of liters remain in the bucket;
- the concrete mixer starts;
- crushed stone is poured into a working concrete mixer, but gradually, at first only two buckets;
- a bucket of cement falls into the unit;
- then the remaining bucket of rubble is added.
The solution is thoroughly mixed and after obtaining a good consistency, sand is poured into it, all three buckets. If the solution becomes too thick, then water is added to the mixture, if the solution has not gained density, then a little cement is poured into it.
This cement preparation algorithm allows crushed stone to be evenly distributed over the entire volume of the prepared material.
Important: it is the cement that is poured into the water (and not vice versa), this makes the concrete really stronger.
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