Купить бетон отличного качества?

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What grade of concrete? What determines the price of different brands?
To overestimate the value of concrete in construction is impossible. Without it does not do almost no construction. Understand the grade of concrete and identify needs for specific tasks, we just help this article.
Concrete is known to be a mixture of binder, aggregate and water. We will consider concrete cement (sometimes also netsementny, for example, silicate) with the aggregate of sand and crushed stone (gravel).
The main index - grade of concrete strength (M50, M100, M200, M300, M350, M400 and so on). This average strength value is used mainly "private channels".
The project documents, as a rule, the concrete strength class specified (guaranteed value).
Mark concrete / designation
M100 B7.5
M150 B10
M200 V15
M250 B20
M300 V22,5
M350 B25
Each grade of concrete has a specific field of application. Schematically it can be represented in the table.
Appointment M100 M150 M200 M250 M300 M350
concrete preparation +
screed +
Foundation + +
Ladders +
Structures +
Ceilings +
Pool +
As you can see, for the most part of the "consumer" of concrete - foundation - the plug is from M200 to M350 . Concrete M200 - the most common, it is most commonly used for strip foundations, M250 and M300 is used on soft ground, M350 is used for the foundations of industrial facilities.
Now, let's see, how much should cost a good one cubic meter of concrete in accordance with GOST standards, which is worthy to be brought to the site with quality certificate.
The price of concrete depends on:
1. Cost components (sand, cement, water, fillers);
2. Presence of additives;
3. Stamps (class);
4. Manufacturer;
5. Season.
The most expensive component in the concrete is cement. Its content and brand directly affects the resulting mark (grade) of concrete. Recall, the higher the grade, the higher the strength. Naturally concrete of higher grade will be more expensive.
Sand, gravel, crushed stone and other. Fillers should be thoroughly cleaned of dirt and other impurities in order to avoid reducing the strength of the concrete. Further purification increases the cost of the resulting mixture.
By itself, the concrete mix is perfect for the construction of various structures, but there are cases when it is necessary to improve certain properties of the solution. To the aid of additives. There are many concrete additives to improve various properties of the solution:
• mobility;
• plasticity;
• water retention;
• curing speed;
• frost
and many more features. Again, this increases the cost of the mixture ....
You ask us - get a good concrete can not be cheap ... Unfortunately our answer - yes ...
And we are well aware that the same type of consistency with various grades of concrete, may not only have different grade strength, but does not contain much-needed on the requirements of GOST, additives.
It is worth noting the fact that the spring of the price of the concrete increases dramatically with the beginning of the revitalization of the construction season (winter the plants need to cover losses). Summer is also expensive, and delivery, as rising fuel prices.
When buying basic landmarks class (grade) are for selecting the mixture, and the mobility (flowability). Still need to pay attention to the difference in the methods of delivery. Delivery of concrete to the mobility of P1 and P2 is carried by dump trucks. Concrete with the mobility of P3 and P4 is delivered to the mixers (mixers). Shipping cost using the mixer is higher than with a dump truck.
How to save money when buying a concrete
first factor influencing the cost of concrete, is to remove the plant from the construction site. With this factor, I hope everything is clear.
Another way to reduce costs is to use cheaper fillers. It fillers instead of cement, as the quantity and quality of cement depends structural strength. For example, gravel and sand, you can add a different metal, which also improve the mechanical properties of the solution, the battle of pure brick or concrete structures.
Since we are talking about saving on the concrete, then here should answer this question: Which is cheaper, buying or concrete to mix yourself? Of course, we are talking about private developers.
There is a misconception that a couple of cubic meters of concrete is easier to cook. But let's look at the cons of this approach:
1. Components (crushed stone, cement, sand) have to bring to this order individual machines;
2. It is necessary to pay workers for the batches of the solution;
3. The solution is prepared not in the factory, with a high probability will not meet the expectations of the strength and uniformity;
4. Stacking solution phases will occur because concrete mixer you most likely one, and it does not dimensionless.
I hope that our article will help you make the right choice and it is possible to save on the purchase of concrete without compromising its main technical parameters such as - strength, frost resistance and water resistance.
Do you want to buy concrete inexpensively ? without losing the quality and standards? Our main activity is the production and sale of concrete in St. Petersburg and Leningrad region strictly in accordance with GOST !.
« Last Edit: June 28, 2017, 01:52:55 AM by satin »