The proportion of rubble. Crushed stone: classification, density, fractions, specific weight

Specific gravity It assumes the amount due to which it became possible to determine the product weight ratio to its volume. Many confuse this parameter with density, but it performs some other value here.

The proportion of rubble helps when calculating the amount of breed in a certain amount of volume.

To calculate bulk density The presented material use the following actions algorithm:

1. Take a measuring container, a height of 100 mm, fill it with material. And before that, be sure to find out the weight of the empty vessel.
2. The backfilling of the rubble into the vessel occurs before the formation of the cone, which must be cut off the ruler.
3. Capacity, only already with rubble, is weighed again.
4. Now with such a formula PN \u003d (M2 - M1) / V, settlement measures occur .

Application and magnitude of rubble 5 20

Crushed stone 5 20 is a building material consisting of small particles, due to which it is actively used in the manufacture of concrete and other construction activities. Limestone crusp 5 20 are manufactured using the method of crushing and dropping small particles.

Due to the high bulk density, the process of laying rubble during the construction of roads does not imply large labor costs. In addition, this parameter allows you to give new road coatings frost resistance and resistance to other atmospheric precipitation.

In addition, according to GOST 8267-93, the proportion of 1300-1400 kg / m3 is set for granite rubble 20 40.

About the characteristics of career sand can be read from this

The magnitude and application of rubble 40 70

This material refers to products with large grains.

This uses such a crushed stone in the following areas of construction:

1. Production of concrete solutions different marks, including cells. Granulated domain waste belongs to the best fillers that can be compared even with the "shot." The reason is that the surface of such a slag has high chain indicators relative to cement. As a result of the hardening, the slagoblock has high strength indicators, in contrast to the granite-gneising product.
2. For the manufacture of slag block. Plants that use crushed waste produce building materials and occasionally saved on the filler. In addition, the finished product has a thermal conductivity coefficient, which is 5 times lower than that of silicate bricks. Consequently, the built house will be very long to keep warm.
3. Manufacture paving tile. Use for these purposes a granular domain slag is a cost-effective solution. As a result, the cost of materials will be reduced by 1.5 -3 times. Thanks to this, the crushed stone is actively used in the manufacture of bricks.
4. Stone wool production. As practice shows, not only natural basalt can be used to obtain this building material, but also slag. The finished product will be characterized by excellent operational properties that will give up glass gamble slightly.

About what technical conditions of sand for construction work You can learn from this

On the video - the proportion of rubble:

How to use GOST 8736 93 sand can be found from this

If we talk about such an indicator, as a specific all, then for rubble 40 70 it will be 1300-1400 kg / m3.

Crushed stone is a very popular building material today. It is actively used in various fields of construction. But before conducting certain works, it is necessary to know what specific mass this material has, because for each type of rubble, taking into account the size of the fractions, this indicator has its own. When choosing a building material, it is necessary to take this criterion into account.

The answer to the question of how many brought the supplier you are very simple. It is enough to know the cubage of the car in which you brought crushed stone. The cube of any car is now not the problems find on the Internet.

Knowing the cube of the machine and the weight of 1m3 rubble will be easy to see if the supplier has a latter large amount of rubble. All this is easily determined using an ordinary roulette!

Weight rubble in fractions in the table.

Opening Granite fraction 0-5 mm ~ 1.41 t / m3

Crusheden granite fraction 5-10 ~ 1.38 t / m3

Crushed stone granite fraction 5-20 ~ 1.35 t / m3

Crushed stone granite fraction 5-25 ~ 1.38 t / m3

Crushed stone granite fraction 20-40 ~ 1.35 t / m3

Crushed stone granite fraction 25-60 ~ 1.37 t / m3

Crushed stone granite fraction 40-70 ~ 1.35 tons / m3

Crushed stone mixture of fraction 0-70 ~ 1.52 t / m3

See the same way

- Sweet weight

- concrete share

The article specifies the approximate weight of the rubble of each fraction.

Become about the weight of rubble in 1 m3. How to determine how much will weigh the cube cube? What is the weight of 1m3 rubble. We hope the information pro volume weight Rubble will be very useful for you in further work.

Crushed stone is a building material that has artificial origin. It is obtained with a fine grinding gravel, pebbles, boulders and rocks. To obtain a secondary material, a method for processing construction trash is used. This includes concrete, brick and asphalt.

This material today is very in demand in the field of construction, because it is difficult to imagine any construction mixturein which there would be no this component. These compositions apply to the construction of the foundation, when plastering surfaces and the erection of bearing structures. When choosing a product, it is very important to pay attention to its technical characteristics, one of which remains a bulk mass. By reference you can read.

Since crushed stone has a rough surface, it is characterized by an excellent hitch with a solution obtained from cement and sand. As a result, the product presented is simply indispensable in the construction of bases, railway mounds, during the construction of roads.

The density of rubble is one of the most important parameter from which the strength is ultimately dependent. This criterion is calculated as the weight ratio to the volume that occupies the material. Units of measurement of this product - kg or t per m3.

The volumetric mass rate for rubble is different and depends on which mountain breed is used to obtain material. For example, 1 m3 of granite has a mass of 2600 kg, and tight limestone - 2700-2900 kg. Such a difference in weight is explained by various amounts of debris impurities and other mineral components.

There is air between grains of rubble. For this reason, 1 m3 with voids can have a mass that will be equal to the volume of non-aggregated rock breed. As a result, this indicator is used as a bulk density of the material. Under this physical indicator implies the relationship of the total weight to the volume he occupies in natural video. It is from the fraction that density depends, because, the smaller the grains, the higher the volume mass. You can find a table with rubble fractions according to GOST.

On the video - the volumetric weight of rubble:

In addition, the density is taken into account in the following cases:

1. With a set of concrete solutions. The higher the density, the smaller the cement is needed. As a result, it will be possible to save money.
2. During transportation. To calculate the load capacity and the need for transport, taking into account the size of its body.
3. During storage and storage. In this case, the density allows you to determine the dimensions of the repository.

To calculate the volume of volumetric mass, it is necessary to use special containers in the process, the volume of which should be up to 50 liters. In addition, the container must have a certain form. These containers are sent to weighing before and after filling from the height of 1m, as well as alignment on the flat with its riding.

The difference received from these results and takes part in the calculations. Here it will be necessary to divide it on the volume of the container. Ultimately, you can get a bulk density of rubble, expressed in kg / m3. After conducting such experience, all data is poisoned into the party quality passport. To carry out all these studies is necessary in a special laboratory, where all the conditions and the necessary equipment are available.

The volumetric mass rate for the crushed stone of various fractions is available:

During grinding grinding to obtain the required fractions, the material density will take the average value between the grains of small and medium size. In this case, the bulk mass can be 1.6 t / m3. Here it is necessary to take into account the shape of the product, with the result that the density is characterized as a bulk.

During the determination of the desired volume, the material for performing certain construction works is used by the bulk weight of the product in dry form. Now the parameter will be called a bulk mass. In the case of preliminary calculations, the average value of the bulk is taken: the volume is 1 m 3 \u003d 1.6 tons.

Table 1 - bulk weight of rubble in fractions

Black and colored rubble density

Today, crushed such species such as decorative is in great demand today. It can take the most distinctive color: black, burgundy, blue. Give the desired shade is possible due to dyes, which are added to its composition. Moreover, under dyes it is worth understanding the binding component of the desired color. It is thanks to modern technologies that the material under consideration may acquire the most different color solutions. It serves such a material for the arrangement of tombstones, flower, lawns. As a result, it is possible to perform a variety of drawings and inscriptions.

In the photo - crushed stone fraction 20 40:

And color, and black crushed stone can be obtained using waste construction. For example, the non-applied concrete can be crushed and produce, so the new crushed stone of the desired fraction, which after can be painted in any color.

Black crushed stone is a building material that can be fractional or ordinary. It is classified according to the method of production and laying on warm, cold and hot.

The size of the granules black crushed stone can be:

• a large - 40-70 mm (it is necessary to crunch), you can see the rubble density fraction 40 70;
• medium - up to 20-40 mm (optimal dimensions), also see;
• small - up to 5-15 mm (crumb used in mixtures).

The cold view of the rubble serves to carry out repair activities at the arrangement of roads. Warm and hot species use in all other cases. In addition, for black rubble, the density indicator can reach 2,600-° C 200 kg / m 3, and the strength indicator is from 80 MPa.

Crushed stone is a building material, the main criterion for the quality of which remains its density. It is the volumetric mass that is so important to consider when this product is selected. Thanks to this, you can choose the right product for building events, as well as correctly choose the place in which he can be stored. You may also need about specifications Rubble for GOST 8267 93.

When performing many types of repair or construction work requires the use of rubble. So that it can be applied to certain purposes, crushed stone is made of different fractions. The material of the small size is used in decorative purposes, the large fraction is needed when erecting important heavy objects.

The average fractional size is 20-40. Crushed stone granite this size is the most popular. For its production, a quartz dior is used or granite.

Composition of material

Granite is considered the most solid rock, which is found on our planet. Due to the special strength produced from the granite materials, including rubble, use there, where objects under construction will be exposed during operation large loads. And since the granite breed is distributed in the territory of almost all states, the cost of materials from it remains affordable and popular.

The color of materials depends on which minerals contains granite, but usually it has a colors from red to gray. In case of a small amount of dark color minerals, the material may have a motley view.

Benefits of material

Fraction 20-40 - crushed stone granite, which is considered the best filler for the construction sphere. Thanks to its use, it is possible to fill the necessary forms without difficulties, saving at the same time, and quite significantly, expensive concrete mixes. Since granite grains have a rough cheese form, an excellent adhesion of the components occurs, which provides an excellent clutch indicator.

If we compare with fractions of other sizes, it is the middle grains that are manufactured at the lowest labor costs, which ensures the most affordable value of the material.

Properties

Operational indicators depend on the following properties:

1. Fraction 20-40 - crushed stone granite, in which the highest wear resistance and compression.
2. The material is able to withstand the infinite number of freezing / defrosts and does not collapse.
3. The presence of low brees. In the total mass of some grains that have needle and flat forms, so rubble is easily tamped in bulk structures and building solutions.
4. The density of the granite rubble 20-40 depends on the rock from which it was manufactured. For example, a cube material from granite weighs about 1370-1400 kg, from limestone - 1280, gabbro-diabase - 1440 kg.
5. Small porosity. Almost complete absence of pores contributes to high bandwidth and a small coefficient of moisture absorption.
6. Low radioactivity. This quality is very important because it allows the use of material when the buildings of residential, economic, social and industrial purposes are erected. This number also includes kindergartens, schools, hospitals.

Compliance of GOST

The crushed stone granite 20-40 GOST number 8267-93 determines the following indicators:

• 5-23% of brees;
• the composition should not be greater than 0.5% of grain 5 mm and more than 10% of fractions, the size of which is less than 20 mm.
• clay dust should not exceed 0.3%;
• 1000-1400 grade strength;
• weight 1 m3 of granite rubble 20-40 - 1.35 tons;
• the presence of clay lumps is a maximum of 0.25%;
• the presence of parties of weak rocks is no more than 5%;
• volume mass size of about 2.7 g / cm 3;
• wear resistance - indicator and1.
• the percentage of water absorption is a maximum of 0.4%.

In addition, the material must have the following properties:

1. An indicator of frost resistance - F300.
2. The level of radioactivity should not exceed 370 BC / kg.

During the determination of product quality, the assessment occurs on these and other characteristics of rubble.

Scope of application

Crushed stone from granite has such chemical-physical properties that provide material with excellent performance. The scope of its use is determined by the size of the grain.

Fraction 20-40 - Crushed stone granite, which is used:

1. In concrete solutions.
2. During the construction of reinforced concrete structures.
3. During the bookmark of the foundations.
4. As a bulk mass for the base under the asphalt fabric.
5. To strengthen or align roads.
6. When the device is parking for cars.
7. For the manufacture of temporary sites, where construction equipment will be located.
8. When building tracks for tram transport.
9. To strengthen the surface under the railway tracks.

Purchase features

It is not about the acquisition process itself, but about choosing a material. The most important thing is that the material correspond to all declared characteristics, and this is possible only when it meets the requirements of GOST. But are those characteristics described in this state document are important? What will happen if the crushed stone does not meet the above-mentioned requirements of the GOST?

As practice confirms, any changes will entail a deterioration in quality. For example, if flat grains in the total mass is greater than this is prescribed, the concrete obtained with their use will be less high-quality, and the number concrete mix It will be necessary to increase what leads to an increase in cash costs.

If the crushed stone granite 20-40 weight has a smaller (or greater) than it is necessary, it means that there are grains of other fractions in its composition. So, the more weight, the more in the total mass of small grains and on the contrary: large particles occupy more space, so such a crushed stone will weigh less.

Therefore, not to acquire a material that will not have the necessary characteristics, when you purchase, you need to make sure that the certificate, the sanitary and epidemiological conclusion, the hygienic characteristics of the products and its passport.

Granite crushed stone is one of the most popular, widely used non-metallic materials, its fractions are used in almost all branches of construction, including road construction. Insofar as granite crusp It is a product of solid rocks specific weight, as well as the proportion of stones served as the source material for the production of rubble ranges from from 2.2 to 3.3 g / cm 3.

Granite crushed stone is classified as a product of rock produced by artificial crushing. All without exception building materialsCreated by the industrial method the relevant requirements are presented, since the durability of future buildings, buildings, roads, during the creation of which they apply on their quality and compliance.

When crushing rubble to obtain certain fractions, the density of rubble has an average value between the average and small fractions, it is approximately 1.6 t / m 3. At the same time, it is necessary to take into account the rash form of the material, the density is precisely a bulk. When determining need quantity The material for conducting certain construction work is usually used by the volumetric weight of rubble in dry form, it is called a bulk mass. In preliminary calculations, the average value of the bulk is usually used: the volume is 1 m 3 \u003d 1.6 tons.

Determination of the quality of granite rubble

The quality of the granite rubble is determined by several parameters: the minimum presence of dust particles corresponding to the requirements of GOST should not contain more than 0.04% of dust particles per ton. In order to achieve such indicators produce rubble flushing after crushing.

Another indicator of the quality of the granite rubble - inhibitivity than it is lower, the higher the quality of the rubble, the presence of flat and needle particles reduces the density of the tamping, which is having a decrease in the strength of concrete structures and road coatingswhich uses this material.

Scandi sells granite crushed stone different fractions In a wide range in any volumes, we also engage in the delivery of nonmetallic materials in St. Petersburg and the Leningrad region, deliveries are always carried out on time and in a short time. We have the most affordable prices, and when ordering large parties and, subject to long cooperation, our customers can get significant discounts.