Road slab 30 18 10. Reinforcement of road slabs. Labeling, transportation, storage

Rectangular road slabs 2P 30-18-10 used for road construction. Reinforced concrete slabs– important component many construction projects and technical structures. No construction project is complete without road elements. It is necessary to lay road surfaces to new objects, for which they are well suitedslabs 2P 30-18-10 . These products allow for savings in the construction of houses due to free access of transport to the construction site. Since the slabs are made from reinforced high-quality concrete, the structures are highly durable and reliable.

1. Options for writing markings.

Rectangular slabs 2P 30-18-10 marked according toGOST 21925-84 . Production and parametersrectangular slab for urban roads fixed in GOST 21924.1(2)-84 And GOST 21924.2-84 . The designation includes the type of product and the size series of the product. Brand writing can be done various options which is not an error:

1. 2P 30-18-10;

2. 2P 30-18-10 a;

3. 2P 30-18-10 in1;

4. 2P 30-18-10 i.

2.Main scope of application.

Road slabs are used to construct roads. These are high-strength elements and can be used to organize both temporary and permanent road surfaces. Car tonnage is calculated as N-10 and N-30,road slab elements 2P 30-18-10 these loads can withstand, as they have a certain margin of safety. The main area of ​​use is a component in city roads.

Unlike asphalt pavement, the data reinforced concrete products 2P 30-18-10 They last much longer without breaking or cracking. Due to high-quality raw materials, these plates can work in fairly “harsh conditions” environment. So the average calculated temperature in winter period can reach up to -40 degrees. The slabs are placed on a special sand-crushed stone bedding, which eliminates the detrimental effect on the products alkaline environment soils.

have slight corrugation on the surface, so asphalt or other covering can be laid on top. Uneven surface provides good adhesion of materials. Since chloride salts are actively used when icing the roadway, rectangular slabs must undergo a special chemical treatment, which significantly increases performance characteristics. Modern methods processing building materials allow you to obtain ultra-strong and wear-resistant products.

3. Designation of product markings.

Label rectangular slabs 2P 30-18-10 according to GOST 21924.2-84. The main designation includes a number of parameters:

1. P – rectangular plate;

2. The main marking by which the purpose of the product is determined is the first number, 2 – for temporary roads;

4. Last digit stands for design load, incl.

Overall dimensions of the plate3000x1750x170 , where the designations correspond to the length, width and height of the product. The geometric volume is -0,8925 , product weight - 2200 . Volume of concrete - 0,88 .

The marking is applied to the side edge of the slab element with special black paint. Additionally, indicate the date of manufacture of the batch, the manufacturer's trademark and the total weight of the slab.

4.Main materials for manufacturing and their characteristics.

All rectangular slabs 2P 30-18-10 made by vibration pressing method. The main raw material is Portland cement. To obtain higher performance characteristics, fine sand and crushed gravel are used. Heavy concrete strength grade M300, which corresponds to the strength class - B22.5 and B30. In addition, the requirements for the frost resistance and water resistance grade must be met.2P 30-18-10 must withstand 200 freezing and thawing cycles. In terms of water resistance, concrete must correspond to grade W4. Such characteristics make it possible to obtain strong and reliable reinforced concrete slabs.

Reinforcement 2P 30-18-10 guarantees that the product will not break or be squashed. Prestressed rods with a corrugated surface are used as reinforcement class A-I, At-ShS, A-III welded into 2 meshes - type C1 and C2, positioned metal frames up and down. Additionally, mounting loops are placed under the collet grip. All steel elements are subjected to anti-corrosion treatment, which increases the reliability and service life of finished products.

For construction and installation enterprises, the IPS-SNAB company offers wide choose road slabs 2P 30.18.10 to best price from the manufacturer. The full range of standard sizes of reinforced concrete road slabs can be found in the table. With us you are guaranteed to receive reinforced concrete slabs for laying roads, produced using factory technology, meeting the requirements of TU and GOST. We provide prompt loading and delivery of road slabs in any quantities in St. Petersburg, Leningrad. regions and Northwestern district. For calculation required quantity products and placing an order, contact our managers or send a request online on our portal.

Durable and wear-resistant reinforced concrete road slabs serve reliable basis to create a road surface, tram tracks, runways. They are used for laying railway tracks, highways, developing landfills and other tasks. Every year there is a growing need for high-quality road surfaces that can withstand significant loads and not lose properties under temperature changes and environmental influences. All these requirements are met by roads made of reinforced concrete road slabs 2P 30.18.10. Additional advantages of using road slabs include high speed installation, minimal labor costs during installation and the possibility of repeated use. The IPS-SNAB company offers construction and municipal enterprises to buy road slab 2P 30.18.10 optimal price with prompt delivery in St. Petersburg, Leningrad. region and Northwestern District.

Production of reinforced concrete road slabs 2P 30.18.10 GOST 21924.0-84

The reinforced concrete structure is a rectangular slab weighing 2.2 tons and can withstand the passage of vehicles weighing up to 10 tons. Road slabs are produced according to modern technology made of concrete heavy brands, which is poured onto durable steel reinforcement. Depending on the size and characteristics of the slab, reinforcement is used under tension or without tension. For the production of road slabs up to three meters in length, non-tensioned reinforcement is usually used.

Options and specifications road slabs are specified in GOST 21924.0. To produce slabs for temporary and permanent roads, heavy concrete with a density of 2500 kg/m3 is used. meter, with compressive strength class B22.5 and B30. Reinforced concrete road slabs 2P 30.18.10 made from this material are distinguished by their reliability and excellent performance characteristics. The outer surface of the plate is corrugated for better traction with vehicle wheels.

Increased strength of products is given by reinforcement with steel rods made of steel classes A-I, A-III or At-ShS. Two welded meshes are located at the top and bottom of the structure, extending the life of the slab and preventing the road from collapsing under the influence of negative influence environment. Road slab 3×1.75 meters is produced in accordance with the conditions of GOST 21924.0 and TU 5846-018-03984346-2001. For ease of storage and transportation, mounting loops are located on the end faces of the product that do not protrude beyond work surface. But if necessary, road slabs 2P 30-18-10 can be equipped with grooves for ease of installation or holes for gripping.

Types and markings of reinforced concrete road slabs

Depending on the future use, road slabs are of two types - for permanent roads (1) and temporary roads (2). The brand of reinforced concrete road slabs has an alphanumeric designation.

The first group indicates the type of product, its length and width in decimeters and the expected vehicle load. The letters give an idea of ​​the reinforcement class of the slab. Markings are applied to the side and end faces of the products; information about the weight and date of production of the reinforced concrete structure is also located here.

Rectangular road slabs 2P30-18-10 used for road construction. Reinforced concrete slabs are an important component of many construction projects and technical structures. No construction project is complete without road elements. It is necessary to lay road surfaces to new objects, for which they are well suited 2P30-18-10. These products allow for savings in the construction of houses due to free access of transport to the construction site. Since the slabs are made from reinforced high-quality concrete, the structures are highly durable and reliable.

Main scope of application.

Road slabs are used to construct roads. These are high-strength elements and can be used to organize both temporary and permanent road surfaces. Car tonnage is calculated as N-10 and N-30, road slab elements 1P 18-15-10 these loads can withstand, as they have a certain margin of safety. The main area of ​​use is a component in city roads.

Unlike asphalt pavement, these reinforced concrete products 2P30-18-10 They last much longer without breaking or cracking. Due to high-quality raw materials, these plates can operate in fairly “harsh” environmental conditions. So the average estimated temperature in winter can reach up to -40 degrees. The slabs are placed on a special sand-crushed stone bedding, which eliminates the harmful effects of the alkaline soil environment on the products.

Rectangular 2P30-18-10 have a slight corrugation on the surface, so asphalt or other coating can be laid on top. The uneven surface ensures good adhesion of materials. Since chloride salts are actively used when icing the roadway, rectangular slabs must undergo special chemical treatment, which significantly improves performance characteristics. Modern methods of processing building materials make it possible to obtain ultra-strong and wear-resistant products.

Rectangular road slabs are used in the construction of temporary access roads in industrial zones, construction sites and industrial enterprises.

Strict requirements are imposed on pavement slabs, which are the main element of temporary access roads. After all, they must withstand:

• vehicle load from 6 to 23 tons per wheel;
• exposure to both high and low temperatures;
• significant bending and tensile loads.

The requirements for road surface slabs are set out in the regulatory and technical documentation “Series 3.503-17”.

Design 2P30.18-10

Road slabs 2P30.18-10 for temporary roads are made from extra-heavy concrete with a density of at least 2500 kg/m. cube Concrete M200...M300 has this density, having a compressive strength class of at least B22.5-B30.

The length of road slabs for temporary road surfaces does not exceed three meters. They are reinforced with unstressed welded mesh made from steel A-I...A-III. Thanks to the use of a grid High Quality The flexural strength of the slabs increases significantly and allows their use in regions with estimated seismic activity of up to 6 points on the Richter scale.

The outer surface of the slab has a special rhombic corrugation, which improves the adhesion of the road surface to the car wheels. When applying asphalt, better adhesion to the slab surface is ensured. However, it should be noted that concrete slab preferable asphalt pavement, as it is able to withstand harsh temperature fluctuations and is not subject to the destructive effects of both high and low temperatures. Road slabs produced by the domestic industry correspond to classes no worse than F150 and W2 in terms of frost resistance and moisture permeability, respectively.

Road slabs are equipped with mounting loops, with the help of which the road surface is laid. In some cases, instead of hinges, slabs are equipped with special elements for loopless installation.

Classification of PD

Road slabs, which are used to construct temporary road surfaces, are distinguished by the way they are supported on the base. Plates produced:

1. Smooth, supported by the entire plane.
2. Ribbed (lattice), resting on the base with a ribbed surface.
3. With sides that cut into the base at full height.

Technology for laying road slabs 2P30.18-10

Road slabs 2P30.18-10 are recommended to be laid on a compacted sand bed. Properly laid slabs ensure long-term trouble-free operation of the road in any climatic conditions. Moreover, it is ready for work immediately after installation is completed.

If road slabs are laid directly on unprepared soil, the service life of the road is significantly reduced.

Requirements for the quality of manufacturing road slabs

Considering harsh conditions operation, road slabs are subject to increased requirements for manufacturing quality. Thus, the following is not allowed:

• reinforcement exposures;
• presence of cracks larger than 50x0.1 mm;
• sinks and beads of concrete on the working surface, the size of which exceeds 15 mm;
• deviations of geometric dimensions by more than:
  • 10 mm in length;
  • 5 mm in width;
  • 5 mm straightness.