Specific weight of the rubble and other features for the builder

Basic specifications rubble

Ballasts are classified as rocks with gravel size, but received artificial ways of crushing natural rocks or bricks, pumice and blast furnace slag.To all building materials must meet certain requirements, as their quality and properties determine how much will be attractive and durable construction, how much will cost all this beauty, what it would cost in the future operation of buildings and many other factors.

When making density fractions of rubble occupies a middle position between gravels and large fines and is about 1.6 t / m3, while the granular form of the material is taken into account, and the bulk density is.Accordingly, determining the necessary quantity of material in producing useful rubble volumetric weight in the dry state, called bulk.For preliminary calculations, you can use the average value of the bulk density of one cubic meter of material to 1.6 tons.

factors that affect the production and use of rubble

Since all varieties have a rough surface structure, they have good adhesion to cement mortar to form a solid monolith of artificial stone, and most of these materials are used as high-quality aggregates.Thus, it is possible to calculate the total weight of gravel required for previously known and planned volumes reclaimed materials produced ratios concretes.

Since the manufacture of concrete solutions in these aggregates is not allowed the presence of dust addition, before using the ballasts are subjected to a water washing.This leads to the need to make certain allowances under the above weighting calculations.Among the main characteristics of experts primarily indicate flakiness rubble as plane material component particles.

The lower the score, the better, and the higher the quality of the concrete.This is due to the maximum density ramming grains.In addition, the ballasts are characterized by grain size.Here fluctuations of these dimensions determines the quality and their applicability in various construction industries.Most small fraction of 3 to 8 mm evroschebnem call.

fractions of 10 to 20 mm are considered the most popular and widely used of rubble.Standard fraction can reach sizes of 7 cm.But there is also a non-standard gravel, and assume a maximum particle size of 15 centimeters for it (!).

Performance of the rubble

Knowing technology of easily guess that the gravel strength depends on the strength of stone material which has become the raw material.If the rubble was made from the mountainous granitic rocks, it has the highest possible strength.But while these ballasts have a sufficiently high radioactivity.

for use in housing construction can only be used radioactive rubble first class, with the presence of relevant supporting research and laboratory certificates.

In addition, there are gravel crushed granite with parameters of durability, inferior granite, but with a missing radioactive background.The limestone (dolomite) ballasts are also widely used in road construction, the characteristics of this kind of demand, and in the manufacture of concrete.

strength of the material is indicated by its brand name, and the higher it is, the more the brand factor (from the M1600 to M200).Most of moves considered ballasts M1200.But not only characterizes the strength of the building material in question.An important characteristic is frost rubble.It is also normalized parameter determined under laboratory test conditions in the control samples.

Here the leading role played by the number of deep freezing and thawing cycles.And hardiness ballasts heterogeneous: from 15 to 300 cycles for the highest quality of them.Incidentally, they are mainly used in construction and.

Ballasts obtained processing artificial stone, called secondary.Their widespread use is due to significantly lower the cost of production and the sufficiently acceptable characteristics for use in road construction, improvement and strengthening of ground facilities, etc.