Norm for the brand

OKP
02 5611 0202

OKP
02 5611 0203

OKP
02 5611 0204

OKP
02 5611 0302

OKP
02 5611 0303

1. Relative viscosity according to a viscometer with a hole of 5 mm at 60 ° With, with

2. Quantity of evaporated diluent, %, not less than

3. The softening temperature of the residue after determining the amount of evaporated thinner, ° C, not below

4. Flash point, determined in an open crucible, ° C, not below

5. Adhesion test with marble or sand

Withstands in accordance with the control sample No. 2

Name of indicator

Norm for the brand

Test method

OKP
02 5611 0304

OKP
02 5611 0403

OKP
02 5611 0401

OKP
02 5611 0402

1. Relative viscosity according to a viscometer with a hole of 5 mm at 60 ° With, with

According to GOST 11503 with the addition of this standard

2. Quantity of evaporated diluent, %, not less than

According to GOST 11504

3. The softening temperature of the residue after determining the amount of evaporated thinner, ° C. not lower

According to GOST 11506

4. Flash point, determined in an open crucible, ° C, not below

According to GOST 4333

5. Adhesion test with marble or sand

Withstands in accordance with the control sample No. 2

According to GOST 11508 and clause of this standard

State name

Name of the national standardization body

The Republic of Azerbaijan

Azgosstandart

Republic of Armenia

Armstate standard

Republic of Belarus

State Standard of Belarus

Gruzstandard

The Republic of Kazakhstan

State Standard of the Republic of Kazakhstan

Kyrgyz Republic

Kyrgyzstandart

The Republic of Moldova

Moldovastandard

Russian Federation

Gosstandart of Russia

The Republic of Uzbekistan

Bitumen is a material widely used in construction, which has excellent hydrophobic and adhesive properties. It is mainly used for asphalting roads. Also very often this material is used as a waterproofing agent in the construction of buildings and structures. In this article, we will understand in detail what bitumen is, what its properties and scope are.

Definition

Bitumen is a dense, viscous, resinous black substance. It is usually supplied in pieces, which are melted before use. The composition of the bitumen is very complex. It is a combination of a hydrocarbon base with its derivatives, as well as metals, oxygen and nitrogen. Various heteroorganic compounds are also present in this material. In general, the composition of bitumen is so rich that it is simply impossible to identify all of its constituents.

How is it made

The main product used to make bitumen is petroleum. There are only three main of this material:

1. Concentration of oil residues by vacuum distillation. The final product is soft and fusible. According to this method, bitumen is obtained from highly resinous (sulphurous) oil.
2. Oxidation of tar (oil residue) by blowing it with oxygen at a temperature of +180...+300 degrees. With this method, a thermostable elastic material is obtained.
3. Mixing of residual and oxidized petroleum products with distillates.

natural bitumen

Most often, this material is produced artificially using the three technologies described above. However, there is also natural bitumen, the characteristics and application of which are approximately the same as those of ordinary bitumen. It lies in nature on and forms a kind of lens. In its pure form, natural bitumen is practically not found. Most often it impregnates some sedimentary layer. Usually these are rocks such as sandstone or limestone. In this case, pure natural bitumen is obtained by pre-grinding the stones. Sometimes such asphalt rock is simply carefully ground and used in road construction.

Types of bitumen by area of ​​​​use

According to the field of application, this material is divided into four large groups:

• Construction bitumen. Used for foundations, buried wooden structures, etc.
• Roofing. It is applied to protection against moisture of roofs of inhabited, industrial and public buildings.
• Oil road bitumen. The most common option used for the preparation of asphalts.
• Insulating. It is applied to protection against moisture and corrosion of metal pipelines.

Road bitumen

In the construction of highways, this hydrophobic material is most often used. There are two main types of road bitumen:

• Viscous. Obtained from oil.
• Liquid. This variety is made from viscous bitumen. Oil products are used as a thinner.

Viscous oil road bitumen is used in the construction of highways in the warm season. Liquid material is used in the cold season. Viscous bitumen before laying is heated to the melting point. Liquid material can be used both cold and heated. Some time after laying, due to oxidative processes, such bitumen thickens and gives a dense, moisture-resistant elastic film.

What characteristics should you pay attention to when buying

There are only three main parameters by which you can determine the quality of bitumen:

• softening temperature indicator;
• ductility (degree of ductility of the bituminous thread);
• penetration (viscosity).

The latter indicator is determined by immersing a needle or cone in bitumen at a certain temperature.

Marking

It is very easy to find out which bitumen is intended for which type of work. To do this, you need to look at the label.

• Construction bitumen is marked with the letters BN.
• Road - BN or BND.
• Roofing - BNK.

After the letters in the marking, there are two numbers through a slash. The first number indicates the softening temperature, the second - the degree of viscosity. The latter is determined by immersing a needle in bitumen at a temperature of 25 ° C.

Marks of viscous road bitumen

As already mentioned, such material is supplied in pieces or in barrels. When asphalting, BN (petroleum) and BND (oil road bitumen) are used. According to GOST, only ten types of this material are produced (BDN from 200/300 to 40/60, BN from 200/300 to 60/90).

Liquid road bitumen

This material is labeled separately. There are only two varieties of it:

1. SG - thickening at an average speed.
2. MG - thickening slowly. This variety is used in road construction in II-V climatic zones.

After the letters in this case, there are also two numbers through a slash, indicating the permissible range of ductility (at a temperature of 60 ° C with a 5 mm hole according to the viscometer).

When buying a batch, you need to check the certificate (passport) for oil road liquid bitumen. The SG brand, just like MG, BDN and BN, must comply with GOST +. We will talk about what this document is a little lower.

Bitumen Safety

Care must be taken when using this material. Bitumen is flammable. The fire hazard of a particular brand is determined by such an indicator as In viscous construction, road, roofing and insulating bitumen it is higher, in liquid bitumen it is lower. Therefore, when working with the latter, one should be especially careful.

Among other things, when performing operations related to the application, storage, transportation, etc. of bitumen, according to the rules of industrial safety, it is necessary to wear overalls. This prevents the worker from getting hot, hard-to-wash drops on the skin.

Bitumen quality certificate

The bitumen sold by the enterprises must comply with the standards of GOST 2245-90. However, today many companies produce products of this type with improved characteristics. Therefore, special certificates certified by the heads of laboratories, also called passports, are attached to the bitumen of one or another brand. They indicate parameters such as penetration, ductility, softening point of the product, etc.

Such a document is issued not only for viscous, but also for oil road liquid bitumen MG. The quality certificate is a guarantee of compliance with the characteristics of the material declared by the manufacturer. The document must bear the seal of the enterprise.

Of course, there must be a passport for bitumen liquid oil road SG, as well as for roofing and insulation. New grades of this material include, for example, BND-U and Euro BV. In relation to them, quality standards are determined not by GOST, but by TU and STO. In the production of Euro BV, the requirements of the European standard EN 12591 are also taken into account.

The most common brands

In construction, oil road bitumen 90/10 is most often used. Manufacturers produce and sell it in huge quantities. With its help, they waterproof foundations, underground parts of wooden supporting structures, interpanel seams, basements and walls. From another fairly popular brand, BN 70/30, it is distinguished by a higher melting point. This expands the scope of its use, since the film given by it is able to withstand high heating temperatures.

In the construction of highways, oil road bitumen MG130/200 is often used. It is usually used in those regions where the air temperature in winter does not fall below 20 ° C. This material forms a reliable and very even road surface.

Oil bitumen for road, construction and roofing is a material that is extremely in demand on the market. It is produced by many companies today. Therefore, choosing a quality product will be completely easy. The main thing is to pay attention to the marking and buy the most suitable option in this particular case.

The oil refining industry produces several varieties of bitumen: solid, semi-solid, and also liquid. The latter are widely used in the laying of road surfaces, acting as a binder for crushed stone and mineral sand. The use of bitumens gives road pavements strength and plasticity, allowing them to maintain their original performance characteristics in critical temperatures. Thanks to bitumen, asphalt does not melt in the heat and does not become brittle in winter.

Production and use of oil road bitumen

Oil road bitumen (BND) is a combustible substance obtained by mixing viscous bitumen with special solvents - thinners. The properties of the resulting material make it possible to lay asphalt concrete even at low temperatures in the winter season. After completion of work, diluents evaporate from the asphalt concrete mixture prepared in this way, bringing the working mixture to its original state and forming a smooth and reliable roadbed. Liquid bitumen is divided into MG (slow thickening) and SG (medium thickening). Oil road bitumen MG is used at construction sites located in climatic zones where the average monthly winter temperature ranges from +5 to -20 degrees. In this case, natural resinous oils and oily petroleum products are used as a thinner.

Characteristics, storage conditions, prices for MG bitumen

The fundamentally important qualities of BND are its resistance to organic solvents (benzene, gasoline, acetone, etc.), as well as insolubility in water, alkaline and acid solutions. The dense and porous structure makes it waterproof and frost-resistant. It is necessary to store and transport MG bitumen strictly in accordance with existing standards in specially equipped tanks. Today, domestic consumers have the opportunity to purchase this type of material that meets state quality standards directly from manufacturing enterprises. The presence of certificates will confirm the compliance of the goods with the current GOST. Prices for oil road bitumen MG fluctuate and depend on the current cost of petroleum products, but always remain within reasonable limits.

Liquid petroleum road bitumen, having a fluid state at positive temperatures, are used as a binder in asphalt concrete mixtures used both in cold (with a temperature of 15 ... 20 ° C) and heat, heated to a temperature of about 100 ° C. Liquid bitumen is obtained mainly by compounding viscous bitumen with a thinner. Such bitumen is often referred to as liquefied. Sometimes liquid bitumen is obtained as a residue from oil refining. The properties of liquefied bitumen are largely determined by the properties of the thinners used. Over time, liquid bitumen thickens due to the evaporation of volatile fractions, oxidation, and other processes. The most important properties of liquid bitumen are: viscosity, thickening rate and properties of the residue after evaporation of volatile fractions, adhesion, flash point, weather resistance, etc. One of the most important signs of bitumen liquefaction is the rate of formation of their structure, which determines the rate of formation of coatings. Depending on the rate of evaporation of light liquefaction fractions and the rate of thickening (structure formation), liquid bitumens are divided into two classes: 1) medium thickening (SG) - thickening at an average speed and obtained by thinning viscous road bitumen with liquid petroleum products; 2) slow thickening (MG) and MGO grades obtained from residual or partially oxidized petroleum products or mixtures thereof. The bitumen class is set according to the amount of thinner evaporated when the bitumen sample is kept in a thermostat at a certain temperature or in a vacuum thermostat.

Depending on the class and viscosity, liquid bitumen has grades: SG 40/70, SG 70/130, SG 130/200; MG 40/70, MG 70/130, MG 130/200; MGO 40/70, MGO 70/130, MGO 130/200.

The numbers in the indexes of bitumen grades mean the limits of conventional viscosity according to a viscometer with a hole of 5 mm at 60 ° C, in seconds. Bitumens of MG and SG classes are practically not produced in our country until recently, although GOST 11955 provides for such bitumens. Liquid bitumen must be produced in accordance with the requirements of GOST 11955

Liquid bitumens thickening at medium speed (LB) are intended for the construction of capital and lightweight road surfaces, as well as for the construction of their bases in all road-climatic zones of the country. Slow-thickening (MG and MGO) are intended for producing cold asphalt concrete, as well as for the construction of lightweight pavements and foundations in II-V road-climatic zones and for other purposes.

Liquid petroleum bitumen class SG are prepared by thinning viscous bitumen with kerosene, gasoline, naphtha, etc. Slowly thickening MG bitumen is obtained using oil products, natural resinous oils, fuel oil, etc. as a thinner. Slow-thickening bitumens can be natural - heavy resinous oils. Liquefaction of viscous bitumen often changes the dispersed structure of the binder, often causing coagulation of the dispersed phase, which adversely affects its properties. Therefore, in each specific case, the diluent must be appropriately selected, taking into account its fractional composition and polarity, similar to viscous bitumen.

For the preparation of liquid bitumen by thinning, viscous bitumen must have a temperature not exceeding 120 ° C (approximately 80-90 ° C when light thinners are used). Under these conditions, viscous road bitumens are used according to GOST 22245-90 with a needle penetration depth of not more than 90.

In liquid bitumen, to ensure the necessary adhesion to marble or sand, if necessary, surfactants (anionic or cationic) are introduced.

When draining, filling and using liquid bitumen, the following heating temperatures for grades are set:

from 70 to 80 °С - for SG 40/70; MG 40/70;

from 80 to 90 °С - for SG 70/130; MG 70/130;

from 90 to 100 °С - for SG 130/200; MG 130/200; MGO 40/70; MGO 70/130; MGO 130/200.

Purpose

Designed for the construction of capital and lightweight road surfaces, as well as for the construction of their foundations in all road and climatic zones of the country.

Delivery:

• Pickup
• Our logistics service
• transport company
  (for Russia and the CIS)

• Bank transfer
• To the map of our company
• Cash

SG bitumen, thickening at an average speed, is obtained by diluting viscous road bitumen with liquid petroleum products (SG). Depending on the class and viscosity, the following grades are installed: SG 40/70, SG 70/130, SG 130/200.

To obtain liquefied bitumen, viscous road bitumen is used according to GOST 22245 with a needle penetration depth of not more than 90. Fractional composition of petroleum products used as thinners:

In liquid bitumen, to ensure the requirement for adhesion to marble or sand, if necessary, surfactants (anionic or cationic) are introduced.

Bitumen MG

Liquid bitumen MG - slow-thickening, obtained by diluting viscous road bitumen with liquid petroleum products (MG), and obtained from residual or partially oxidized petroleum products or their mixtures (LGO), intended for the production of cold asphalt concrete, as well as for the construction of lightweight road surfaces and bases in II -V road-climatic zones and other purposes.
Depending on the class and viscosity, the following grades of liquid bitumen are installed:

MG 40/70, MG 70/130, MG 130/200;

To obtain liquefied bitumen, viscous road bitumen is used according to GOST 22245 with a needle penetration depth of not more than 90.

Fractional composition of petroleum products used as thinners:

In liquid bitumen, to ensure the requirement for adhesion to marble or sand, if necessary, surfactants (anionic or cationic) are introduced.

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