Currently, as many centuries ago, the concrete is probably the most common material for construction.It is used when performing a wide variety of construction works - from major repairs to the construction of buildings.However, to carry out any work the first thing you want to calculate the amount of material required, taking into account its characteristics.For example, the builders often a challenge to determine the weight of a cubic meter of it.Therefore, this article is devoted to the question of what is the weight of 1 m3 of concrete.
What determines the mass of concrete
First of all, it should be noted that the builders do not use such a thing as "the proportion of concrete."This is due to the fact that the building material in the structure may contain a variety of components having different weights.
So, as a filler can be used:
• gravel.
• Gravel.
• Expanded clay and others.
Even if concrete preparation used the same composition, the weight of 1 m3 of concrete may be different in cases where the filler has different factions.The larger the fraction, the larger voids in the material and, accordingly, less mass.
But builders still interested in weight characteristics because of the value of this indicator depends on many characteristics of those objects.For example, on the basis of these data, and perform calculation of the weight is selected form the bases for different types of soil.The same applies to the other bearing elements.
In practice, the builders used the parameter called "volumetric weight".But this characteristic is not a constant value.In addition, the calculations must take into account the weight of the liquid applied in the preparation of the solution.
Species concrete
By type of binder, this building material is divided into the cement, lime, shlakoshchelochnyh, asphalt and others. The purpose shared by conventional concrete (for civil and industrial construction), special (road, decorative, heat insulation,hydro) and special purpose (chemically resistant, sound-absorbing, heat-resistant, for protection against nuclear radiation, etc.).
Features concrete
as the main index characterizing concrete, using compressive strength.This characteristic determines the class of the concrete, which is celebrated by the letter "B" (Latin), and numbers that indicate (in kg / sq cm) load capacity.For example, the B25 shows that this class is intended for concrete load of 25 kg / cm.In the calculation of the strength of structures should take into account factors.Example: the construction of concrete class B25 at a rate of 13.5 percent coefficient of variation is able to withstand the load of 327 kg / cm, which is equivalent to the strength of the brand M350.Strength class V3,5 brand strength corresponds to M50, B10 - M150, B30 - M400, and B60 - M800.
Other important indicators include concrete frost resistance, flexural strength and water resistance.Frost indicated by the letter «F» and the number of 50 to 500 means the number of transitions from freeze thawing and back that will withstand the concrete.Indicator used for waterproofing letter «W» and number from 2 to 12, which shows the water pressure, which supports the sample given a grade of concrete cylinder.
Weighing
Reference data on the volume weight of concrete are defined in the SNP № II-3.This standard specifies the estimated weight species concrete depending on the type of its filler.It has the weight of the concrete table from which you can learn what concrete products are characterized by bulk density (kg / m3) in 2500, the concrete with a filler in the form of gravel or crushed stone - 2400, expanded clay lightweight concrete based on expanded clay sand - 500-1800, on the basis ofperlite - 800-1000.In turn, characterized aerated bulk density 300-1000 kg / m3.Naturally, the weight of 1 m3 of concrete is approximate, but the data are well suited to accounting purposes.For the accuracy of the data to a few kilograms can provide no calculation.
weight concrete depending on its brand
Builders often determine the weight of 1 m3 of concrete depending on the brand.Heavy its species characterized by the following estimates.Weight concrete M200 is 2430 kg / m3.To mark M100, you can use the value of 2495 kg / m3.Weight concrete M300 - 2390, and for stamps M400 and M500 can take the values 2375 and 2300 kg / m3, respectively.
Thus given in the article quantitative values can be used to approximate engineering calculations in the production repair and construction works.
