A popular option in construction, concrete M250 offers a well-balanced mix of workability and strength. Frequently employed in diverse construction endeavors, this variety of concrete is notable for its dependability and adaptability. Making informed decisions is facilitated by knowing its primary features and composition, regardless of whether you’re a professional or a do-it-yourself enthusiast.
At 250 kg per square centimeter, Concrete M250’s compressive strength is its primary characteristic. This means that it is appropriate for medium-load applications such as floors, driveways, and structural supports because it can tolerate large loads and stresses. The strength rating shows how well it functions under stress, which is important to guarantee the stability and longevity of your building projects.
A mixture of cement, water, sand, and aggregate makes up Concrete M250. The mix ratio is precisely calibrated to produce the required durability and strength. A precise ratio of cement to sand and gravel is typically used in concrete, and water is added to activate the cement and bind the materials together. The goal of this mixture is to produce a durable product that holds up well over time.
Concrete M250 is strong, but it’s also reasonably easy to mix, pour, and finish thanks to its good workability. It is therefore a sensible option for a variety of construction jobs. Knowing how Concrete M250 works and is made can help you get the best results, whether you’re working on a small home improvement project or a larger construction job.
Technical characteristics of concrete M250 B20
The scope of application of concrete M250 is similar to the scope of application of the material grade M200. The main difference between structures erected or made from material grade M 250 is increased compressive strength. In general, concrete M250 is used for:
- Pouring foundations, load-bearing walls, platforms, blind areas, sidewalks and garden paths.
- Manufacturing of reinforced concrete products: floor slabs, flights of stairs, paving slabs and curbs.
- Construction of runways of airports, highways and arrangement of concrete pads.
The requirements of GOST 26633-2012 "Heavy and fine-grained concrete" and other regulatory documents specify the technical characteristics of concrete M250 B20. The type of filler, the water-to-cement ratio, and the application of modifying additives all have an impact on the numerical values of the characteristics in each particular instance:
- Concrete class M250: IN 20. Determined by testing standard samples for compression. In this case, the number "20" indicates that in 95% of cases, standard samples made of M250 concrete will withstand a pressure of 20 MPa (200 kgf/cm2). Accordingly, the strength of M250 concrete, taking into account the variation coefficient, is within 200-260 kgf\cm2.
- Frost resistance: F150-F200 cycles depending on the type of filler (crushed stone): granite, gravel or limestone.
- Water resistance: W2- W Depends on the use or non-use of special additives.
- Mobility: P2-P4. A specific indicator depends on the use or non-use of special additives.
- Average weight of M250 concrete (specific density): 2,300 kg/m3. Depends on the type of filler.
- Cost of factory-made M250 concrete in Moscow and the Moscow region, taking into account the cost of delivery: 4 250-4 400 rub./m3. The price depends on the region of Russia, the manufacturer and the ordered technical characteristics (mobility, frost resistance, water resistance and compressive strength).
Popular concrete grade M250 is valued for its strength and adaptability, making it ideal for a variety of construction applications. It is made to withstand heavy loads with a 250 MPa compressive strength and to be durable and wear-resistant. In order to achieve the desired properties, its composition usually consists of a mixture of cement, aggregates, water, and occasionally additives that are carefully balanced. By choosing the appropriate material for their particular needs, builders can ensure stability and longevity in their structures by having a thorough understanding of the composition and characteristics of M250 concrete.
Composition of concrete M250
The following primary ingredients are mixed to create concrete mortar of this grade in compliance with regulatory documents:
- Portland cement grade CEM I 32.5N PC (M400) or CEM I 42.5N PC (M500).
- Quarry or river sand.
- Granite, gravel or limestone crushed stone.
- Clean water.
Concrete waterproofing additives, colorants, plasticizers, and anti-freeze are added to the mixture to give it specific characteristics.
Proportions of concrete M250
Practically speaking, if the developer prepares the concrete mortar on the construction site by hand, the quantity of components needed to prepare 1 m3 is significant. When finished material matching concrete grade M250 is delivered from the concrete plant, it is tested in the plant laboratory before being put to immediate use.
In order to ready one cubic meter of M250 concrete, you’ll need:
- 295 kg of Portland cement CEM I 32.5N PC (M400) or 257 kg of Portland cement CEM I 42.5N PC (M500)
- 1,115 kg granite crushed stone.
- 690 kg or 720 (for Portland cement CEM I 42.5N PC (M500)) sand.
- 190 l water.
The "bucket" is the commonly used unit of measurement for concrete components when mixing small amounts of material. Consequently, knowing the proportions of the composition of concrete m 250 in 10-liter buckets will be helpful to a private developer. We set the following initial data to find this value:
- Ratio of components (C: Shch:P:V) of concrete based on Portland cement CEM I 32.5N PC (M400), kg: 1:3.8:2.3:0.6.
- Specific gravity of cement: 1,300 kg/m3.
- Specific gravity of crushed granite: 1,360 kg/m3.
- Specific gravity of sand: 1,550 kg/m3.
- Specific gravity of ready-made concrete: 2,300 kg/m3
We convert the bucket’s liter capacity to milliliter capacity (10/1000=0.01 m3). Let’s calculate the mass of sand, crushed stone, and cement in kilograms that will fit in a ten-liter bucket:
- Cement: 1300X0.001=13 kg.
- Crushed stone: 1,360×0.01=13.6 kg
- Sand: 1,550×0.01=15.5 kg.
We can figure out how many m3 of concrete can be made from a single 10-liter bucket of cement by using the ratio of components C: U: P: V.
- Amount of concrete in kg: 13 (cement) + 3.3×13.6 (crushed stone) + 2.3×15.5 (sand) + 13×0.6 (water) = 101.33 kg.
- Amount of concrete in m3: 101.33/2,300=0.044 m3.
If you are aware of the ratios of M250 concrete to one cubic meter, you can use your own math skills to estimate the approximate cost of production and contrast it with the cost of ready-made concrete made under factory conditions. In Moscow and the surrounding area, we determine the costs of the primary components:
- Portland cement CEM I 32.5N PC (M400): 3600 rubles./t = 3.6 rubles./kg.
- Crushed stone: 1,630 rubles./t = 1.63 rubles./kg.
- Sand: 170 rubles./t = 0.17 rubles./kg.
- Water: 35.4 rubles./m3 = 0.0354 rubles./l
We paid 3,002 rubles for 1 m3 of our own-made M 250 concrete (295 x 3.6) + 1,115 x 1.63 + 690 x 0.17 + 190 x 0.035). The price difference between self-made and factory-made concrete can be calculated as follows: 100 – ((3002×100) / (4 250 + 4 400/2)) = 100 – 69.4 = 30.6%. The developer will save thirty.6% by producing concrete M 250 themselves as opposed to purchasing pre-made concrete.
A valid question that many developers will have is "where did such a significant difference in cost come from." The truth is that the price of factory-made concrete "sits" on expense items that are not included in the price of self-made concrete: profit, taxes and required deductions to state funds, depreciation of buildings and structures, wages, electricity, renovation (full restoration) of equipment, and other production and non-production costs.
| Characteristic | Description |
| Grade | M250 |
| Compressive Strength | 250 MPa (megapascals) at 28 days |
| Typical Uses | Suitable for medium to high-strength applications like pavements, foundations, and structural elements |
| Mix Composition | Cement, sand, aggregate (gravel or crushed stone), and water |
| Cement Type | Ordinary Portland Cement (OPC) or other suitable types |
| Water-Cement Ratio | Typically around 0.4 to 0.5 |
| Workability | Moderate; can be adjusted with admixtures if needed |
| Durability | Good resistance to weathering and environmental factors |
| Curing Time | Usually 7 to 14 days for optimal strength development |
Concrete M250 is a strong, adaptable material that is frequently used in construction because of its remarkable strength and longevity. Making informed decisions for a variety of projects is facilitated by having a solid understanding of its composition and key features. M250 concrete is well-known for having an equal proportion of water, cement, and aggregates, which makes it appropriate for both commercial and residential use.
The compressive strength of M250 concrete is one of its most notable qualities. With a 25 MPa rating, it provides a good mix of strength and workability, which makes it perfect for medium-duty structures. The durability of any construction depends on the concrete’s ability to withstand large loads and stresses, which is ensured by its strength.
M250 concrete’s composition was thoughtfully chosen to provide the appropriate qualities. It usually consists of a mixture of water, regular Portland cement, fine aggregates like sand, and coarse aggregates like crushed stone or gravel. These components’ ratios are changed to satisfy particular needs and performance benchmarks.
Practically speaking, M250 concrete is frequently utilized for pavements, foundations, and other structural components that require moderate strength. Builders and engineers like it because of its dependability and simplicity of use. The success of your project can be increased by being aware of the characteristics of M250 concrete, whether you’re working on a renovation or new construction.
All things considered, Concrete M250 provides a strong blend of adaptability and strength, making it a preferred choice for numerous construction applications. Understanding this material’s properties and makeup will help you make better use of it in your projects and get the performance and durability you want.
