Rubble characteristics

How to buy rubble that it is ideal for meeting your goals? The use of crushed stone depends on the type and fraction, grain size. To do this, you need to familiarize yourself with the technical specifications. Let's list the main ones:

- strength;
- durability;
- radioactivity;
- frost resistance.

The best results are shown by granite, the only drawback is the increased radioactive background. It should be noted the low ness - the shape of the pebble. Thanks to this, there will be no voids in the concrete mass, thus achieving the highest aggregate density. The strength and durability of the final product is ensured. Also, crushed granite has high frost resistance, resistance to aggressive environment, weathering.

See also online calculator for rubble - Rubble Consumption Calculator.

The gravel variety shows similar technical performance. But, due to the absence of a radioactive background, it is used in the construction of housing, children's institutions, various parks and sports grounds. Demand means affordable prices and good performance.

Raw materials from limestone have the lowest cost, therefore, in works where high loads are not expected, it has priority over its counterparts. Strength and other properties are low, subject to weathering and washout when exposed to precipitation.

Choosing construction rubble. The use of crushed stone in construction work is due not only to strength, so that the choice meets the requirements, the fraction of crushed stone is taken into account.

By grain size, subdivided:

5 - 20 mm small;
20 - 40 mm medium;
40 - 70 mm large.
70 mm and more.

Often, consumers are tormented by the question - which rubble is better, small or large. It is impossible to answer unequivocally, it all depends on the work performed, operating conditions, loads. Small and medium species have a high bulk density, good ramming. The large one has its advantages in a number of works carried out.

Another indicator of quality is density, this indicator determines the strength of the final construction product. The density of crushed stone is the ratio of mass to volume, measured in kilograms per cubic meter.

In practice, more often pay attention to the bulk density, it is taken into account in the production of cement-crushed stone mixtures. In the case of a high bulk density of the material, it is possible to reduce the consumption of the binder, cement in the solution.

The strength of this material is important to consider together with the frost resistance indicator. Strong, but not resistant to low temperatures, crushed stone can collapse in the shortest possible time. The material is tested for frost resistance together with a hardness test, such an assessment will be the most objective.

The main criterion in the selection should be complete information about the operating conditions of the final product. If this is a path on the site, it is hardly appropriate to buy the most expensive granite crushed stone, it will be quite budgetary to use a limestone look.

Rubble for concrete can also be of different fractions and origins. If it is home renovation work, the limestone type of medium fraction will serve for a long time and reliably in the concrete mixture.

If we are talking about ready-mixed concrete in large volumes, it is appropriate to use the large version. Rubble for the foundation is the best type of gravel, fine and medium fraction.