Cement-sand mix M300is a universal building material, which in the classic formula consists of cement, sand and coarse gravel aggregate. Unlike classic concrete, the m300 sand-cement mix has a much smaller fraction, and as a result, the solution is more plastic and convenient to use. According to GOST 25192-82, this material practically does not shrink and is characterized by high density due to the use of dense river sand with a fraction size of up to 3 mm. Also, according to building codes, the m300 sand concrete mix can be diluted with various components to achieve certain characteristics, for example, it can be plasticizers that reduce the rigidity of the solution, granotes and even small crushed stone. Due to its uniformity and plasticity, the resulting concrete mix evenly fills the entire volume, the filler does not cake and does not concentrate in any layers of pouring.
Types of sand concrete
In bags, sand concrete of the M300 brand has the following packaging:50 kg,40 kg,35 kgand25 kg, there are also brands M100, M150, M200, M400. The higher the grade, the higher the strength of the gripping material. Since the formula of the solution is well-established, there are no other types of material, with the exception of “improved” series produced using frost-resistant additives, granotsevoy double sorting. Most often, sand concrete is used on construction sites for laying bricks M300. It can also be used for filling floors, cracks, hollow structures, arranging foundations and floors, performing installation work. For these purposes, it is enough to apply a material with a thickness of 10-50 mm, but if you need to increase the layer thickness to 100 mm, only the setting time of the mortar and the use of mesh for masonry will increase.
Composition of sand concrete M300
In our online store you can buy sand concrete M300 with delivery in Moscow, made according to the requirements of GOST, namely:
- Particle size 0.1…3.0 mm;
- Strength grade-M300;
- Setting time-120-180 minutes;
- The basic proportion is 1/3 cement, 2/3 sand;
- Pot life of the solution is up to 120 minutes.
To prepare a sand concrete solution according to GOST, about 2 liters of water per 10 kg of dry mix are required. The solution must be thoroughly mixed before use. The final strength will be obtained in 28 days.
Application of sand concrete
The cost of sand concrete M300 is relatively low, and the scope of application is quite wide. That is why the M300 brand is often used in the preparation of masonry mortars, pouring monolithic foundations, armopoyas, and the construction of monolithic buildings. Characteristics of the material that determine its scope of application:
- High strength of the matured coating and a service life of about 30-50 years, depending on environmental conditions;
- High mechanical resistance; no corrosion; endurance in direct contact with moisture; frost resistance;
- High density, virtually no shrinkage of the material;
- It can be used as a base or as a separate component of building mixes (expanded clay, concrete, cement insulation solutions).
The SNiP assumes a large area of application of sand concrete. Very often, builders conditionally divide this material into plaster, masonry, universal, installation and masonry mortar, although there is no clear division of application anywhere in GOST. In the ALPHATSEM online store, you can buy M300 dry mix for the following types of work::
- Masonry of bricks, blocks, precast concrete;
- Filling and sealing of cracks, chips, and defects in monolithic concrete structures;
- Floor screed;
- Preparation of surfaces before pouring; leveling of large height differences on the floor;
- Construction of monolithic stairs;
- Landscaping (filling paths, blind area).
Contact our consultants to find the best mix for your chosen type of work. Our company has been supplying construction sites with dry mixes for 15 years, so we are well-versed in the requests and requirements of our customers.
Packing of sand concrete in bags
The vast majority of manufacturers of dry mixes of this type pack the material in paper bags of 50, 40, 35 and 25 kg. However, if you are interested in wholesale cooperation, AlfatSem will provide construction materialsin big bagsfor 1 ton. The price of sand concrete m300 in such packaging will be 15-30% cheaper than bagging. Please note that the life of the mortar should not exceed 3 hours, so if you plan to postpone construction or use only part of the sand concrete, it is important to ensure complete isolation from moisture. Some brands offer so-called modified construction dry mixes, the maturation period of which is reduced to several days, and the setting time is reduced to 20-30 minutes. Packing of 25 kg is convenient to use, if mixing is carried out manually with a construction mixer, bags of 50 kg are most effectively used in a concrete mixer. This way you will have time to produce solutions before their initial setting and reduce your own labor costs.
How to choose M300 construction dry mix (sand concrete)?
The online store “Alfatsem” offers a wide range of sand concrete with different properties and from different manufacturers (Stone flower, MultiMix, CSM, Montazh Plus, UMIX, DAUER, MAKS). This choice was created specifically so that our customers can buy a mixture in one place to meet their technical requirements. In addition, a large selection of products makes it easier to find building materials within the allocated budget. Take advantage of some recommendations to make a profitable purchase of consumables for your properties:
- You can buy sand concrete M300 as a universal base, and increase or decrease the grade by adding cement or sand, respectively;
- It is better to give preference to trademarks that work according to GOST;
- As a rule, about 18-20 kg of dry mix is spent on 1 sq. m. of the area with a layer of 1 cm. You can also find expenses in the labels on the bags;
- It is most profitable to buy material in big bags, but it is better to calculate the cost of sand concrete in advance, so as not to get an overspend;
- Pay attention to the” improved ” formulas of sand concrete, for example, with additives that increase frost resistance, setting speed, and ductility;
- Some formulations allow you to work with a solution up to -15 degrees Celsius;
- The thinner the planned layer of material, the smaller the fraction is better to buy.
Important! Despite the fact that the building material has a long shelf life, pay attention to the release date (usually indicated on the label). It is better to buy building mixes from specialized companies, such as Alfatsem, where warehouses provide for a certain temperature regime, humidity is controlled, and direct delivery of non-lying goods from the supplier is carried out. Discounts are provided for wholesale clients, we cooperate with construction companies, brigades, and retail clients. You can order a large list of dry mixes, slate, gas block, brick and other construction materials from us. This way you will save your time, optimize delivery costs, and get really high-quality building materials for your properties.