Road and airfield slabs. Road slabs, airfield slabs Road slab 1 p 30.18 30

Road slabs 1P30 18 30 - these are flat products from reinforced concrete 170 mm thick, intended for the construction of permanent roads various purposes on construction sites. Road panels 1P30 18 30 durable and able to withstand heavy loads when heavy-duty equipment moves over them. The first number in the slab marking indicates that the panels are slabs for permanent roads (number 2 would indicate that the slabs are used as temporary covering); numbers 30 and 18 are the length and thickness of the road slab in decimeters; the last number 30 shows the calculated permissible load on the slab. For the production of road panels 1P30 18 30 concrete is used heavy brands as well as a reinforced frame. 1P30 18 30 is a combination of concrete that takes compressive loads and reinforcement that takes tensile loads. Usage road slabs allows you to quickly build high-quality automotive coatings in difficult climatic and geological conditions for low cost in comparison with other types of road surfaces.

Buy 1P30 18 30

in Moscow and the Moscow region

ROSZHBI accepts orders for road slabs 1P30 18 30 of any volume and ensures prompt delivery finished products own vehicles in Moscow and the Moscow region. By choosing us as a supplier of reinforced concrete road slabs, you can be confident in the reliability and durability of the purchased products. We install affordable prices for slabs 1P30 18 30 and we pursue a policy of long-term cooperation, so most customers of our reinforced concrete products become regular customers.

Rectangular iron concrete slab for urban road surfaces ( 1P 30.18-30 ) – a high-strength slab made of heavy concrete, with powerful reinforcement, designed for the construction of prefabricated pavement for permanent and temporary city roads. The rectangular slab is designed for vehicle load N-30 and N-10 (vehicle tonnage).

Production standards and parameters of rectangular slabs for urban roads are specified in GOST 21924.1(2)-84 and GOST 21924.2-84.

The traditional material for producing heavy-duty slabs is heavy concrete with a density of 2500 kg/m3 (compressive strength class B30 and B22.5). This durable, wear-resistant cement concrete has proven its worth for many years. the best side as a material for road bases and coatings. The working (upper) surface of the road slab is corrugated to improve bonding with the asphalt applied on top and improve traction with vehicle wheels. Road slabs of short length (up to 3 meters) are produced unstressed. Reinforced reinforcement of the 1P 30.18.30 slab is made using non-stressed steel reinforcement class A-I, At-ShS, A-III welded into 2 meshes located at the top and bottom. Such reinforcement significantly increases not only the strength, but also the weight of the product up to 2200 kg.

The concrete grade for frost resistance and water resistance of a rectangular road slab (for temperatures up to minus 40 ° C) for permanent roads is F200 and W4, for temporary roads - F150 and W2.

The road slab has mounting loops located along the end faces (the loops do not protrude beyond the working surface of the slab edge), but upon agreement with the customer, slabs can be manufactured with holes for a collet grip or grooves for loopless installation.

Unlike asphalt, a rectangular slab can be used at a design temperature of up to minus 40 °C. At the same time, the concrete slab is ready for use immediately - in different weather conditions, at any time of the year. Currently, the slabs undergo anti-corrosion treatment, since when chloride salts are used to combat icing, road slabs are exposed to difficult operating conditions.

Product marking

Plates are divided into two types according to their intended purpose:

• 1 - for permanent roads;
• 2 - for temporary roads;

The mark of a rectangular slab consists of alphanumeric groups separated by a hyphen. The first group contains the designation of the slab type (1 or 2) and its rounded dimensions in decimeters (length and width) and the calculated vehicle load in tons.

As an example, consider a rectangular slab of grade 1P 30.18-30 (3000x1750x170 mm), where:

• Number - type intended for roads;
• P – slab shape (rectangular);
• Length and width in dm;
• Letters - reinforcement class.

Markings must be present on the side and end faces of each road slab, along with the weight and date of manufacture of the product.

Product quality control

As with other reinforced concrete products, cracks in the concrete of road slabs should not be more than 5 per 1.5 m2 of the slab surface (permissible crack length 50 mm, width 0.1 mm). The basis for rejecting a product is even a slight exposure of the reinforcement, since during operation such areas will lead to rapid corrosion and destruction of the product.

The geometric parameters of the road slab 1P 30.18.30 should not deviate from the design by more than ±10 mm in length, ±4 mm in width and 10 mm in straightness (for temporary road slabs, the maximum deviation indicators are less strict). The tempering strength of concrete is 70% of the design strength, in winter time – 90%.

The corrugation of the surface of the road slab is a clear rhombic pattern, without edges, at least 1.0 mm deep and has a rough surface.

Concrete sinkholes and beads on the working side of a rectangular road slab should not be more than 15 mm. The dimensions of cavities, local beads and concrete edges on the surface of the slab should not exceed 10 mm. on work surface, 20 mm on non-working.

On acceptance tests control the following parameters of rectangular road slabs:

• concrete strength (class of concrete in terms of compressive strength, tempering strength);
• compliance of reinforcement and embedded products;
• location of reinforcement and tension of prestressing reinforcement;
• strength of welded joints;
• thickness of the protective layer of concrete to the reinforcement;
• accuracy geometric parameters;
• quality of concrete surfaces.

P must accompany the batch of road slabs technical certificate , in which they indicate:

• grade of concrete in terms of strength and its average density;
• tempering strength of concrete and actual tempering density of concrete;
• concrete grade for frost resistance and water resistance;
• water absorption of concrete;
• date of manufacture of the slabs.

Storage and transportation

It is recommended to transport and store rectangular road slabs, like many other reinforced concrete products, in horizontal stacks. The stack height should not exceed 2 meters to avoid loss of stability. In warehouses, slabs for urban roads must be sorted by brand and batch. The bottom row of road slabs is stacked on a dense, carefully leveled base. Between rectangular concrete slabs and under them, gaskets are laid for a soil base with a thickness of at least 100 mm, and for a rigid base - at least 50 mm.

When loading and transporting, care should be taken to avoid the possibility of damage to road slabs. Therefore, it is not allowed to subject the slabs to drops, impacts or shocks during unloading.

Laying road slabs

Road slabs, based on the nature of their support on the base, are divided into:

• to smooth ones with a flat surface resting continuously on the base;
• with edge edges resting on the base with the entire surface, and edges cutting into the base on full height;
• into coffered and ribbed ones, resting on the base with a ribbed surface;
• to finely ribbed;
• on lattice ones, resting on the base not only with the lower surface of the lattice elements, but when filling the slabs with dense material and inclined side edges of the holes;
• on slabs, additionally resting their edges or corners on pads at the base.

It is not recommended to install road slab on the ground without a carefully compacted sand cushion. If you do not make a sand base, the service life of the slabs will be significantly reduced. Roads based on road slabs are immediately ready for use. When laying, it is worth considering the presence of expansion joints and compression joints, which are filled with elastic mastics. Subject to installation rules and permissible loads This coating will last for many years.

Prices in the table are indicated in rubles, including VAT (18%).

Application of slabs

Reinforced concrete slabs 1P-30-18-30 can withstand heavy loads and have a long service life, so they are readily used when constructing permanent access roads to industrial facilities and remote settlements, construction sites and mining sites.

Manufacturing

Road slabs 1P-30-18-30 are manufactured in compliance with the requirements of GOST 21924.8 from high-quality components so that the finished product complies with construction regulations: high frost resistance (up to -40 degrees) and low water absorption (no more than 4%). Many roads in the regions of the country were built back in Soviet times using this type of slab.

For 1P-30-18-30 slabs, M400 cement is used. Heavy concrete is poured into a steel mold reinforced mesh under voltage. Reinforcement cells are secured using clamps, and concrete is poured into the mold in stages and is accompanied by compaction of the mass using vibration. On final stage The board is heat-dried and then marked and assessed for quality through multiple strength tests. If you want to buy 1P-30-18-30 road slabs inexpensively, we recommend making a wholesale supply.

Specifications

A reinforced concrete slab weighing 2.2 tons has the following parameters:

• length – 3 m,
• width – 1.65 m,
• thickness – 17 cm.

The digital and letter combination on the marking of the reinforced concrete slab 1P-30-18-30 is deciphered as follows:

• 1 – the product is intended for the construction of permanent roads;
• p – the plate has a rectangular shape;
• 30-18-30 – characteristics of the slab in decimeters (length and width, respectively) and maximum load in tons.

Peculiarities

Having assessed the advantages of 1P-30-18-30 road slabs, it is easy to explain their popularity and the desire of consumers to use these particular reinforced concrete products in road construction.

• Before laying, there is no need to carry out labor-intensive preparation of the base (a sand cushion 20 cm high is sufficient), which significantly speeds up road construction even in difficult climatic conditions.
• The shape of a regular rectangle does not cause difficulties when joining the slabs, further ensuring their smaller discrepancies.
• The presence of special loops simplifies the process of loading and unloading and stacking products.
• High frost resistance does not limit the geography of use of 1P-30-18-30 slabs.
• The ability to withstand heavy loads guarantees the safety of movement of vehicles weighing up to 30 tons on the road surface.
• Unlike asphalt, a tiled road can be quickly dismantled if necessary and transported to a new location.

Transportation and storage

When selling 1P-30-18-30 road slabs at a retail or wholesale price per piece, there are no restrictions on supply volumes. Before loading, each product is carefully inspected by quality control specialists to ensure that the customer receives products of ideal quality.

The slabs are loaded onto railway platforms or wheeled special equipment, while the order is delivered along the most efficient routes to save costs. Reinforced concrete slabs 1P-30-18-30 are transported exclusively in a horizontal position, which helps ensure the safety of the batch.

The slabs can be stored in open areas, as well as in closed warehouses and hangars. During storage, the slabs are stacked in vertical stacks no more than one and a half meters high.

Reinforced concrete road slab 1P 30-18-30 It is a flat rectangular slab of reinforced concrete. The main task of the 1P30-18 road slab is to ensure the reliability of the road surface, both temporary and permanent. The number "1" before the slab marking indicates that the slab is intended for permanent and not temporary use, and accordingly, has more high performance strength compared to 2P slabs. The load that such a slab can withstand depends on the grade of concrete from which this product is made. The higher the grade, the stronger and more resistant to deformation the road surface made of slabs is.

Despite the fact that it is very comfortable material, strong and practical, each type of stove, and there are several types, has its own limitations in operation. If large and heavy vehicles often drive over road slabs, then 1P 30-18-30 type slabs are gradually destroyed. In such cases, it is better to use a slab with prestressed reinforcement and a higher class of concrete 1P 30-18-30. Before installing the stove, you need to consider how much weight and how often it will have to be carried.

Another undoubted advantage all road slabs 1p 30.18.30 is that they can be repackaged and can be used repeatedly at different sites. Therefore, it is not uncommon to find offers for the sale of used road slabs. That is why road slabs are increasingly used for the construction of a temporary access road, simply covering the road, first leveling the ground and installing a sand cushion for laying reinforced concrete. The road immediately becomes suitable for travel. Since the temporary path is unnecessary, the slabs can be disassembled and redeployed.

As you know, when laying roads, builders must strictly adhere to technologies that have been tested over the years. These standards cannot be ignored; shortcomings can result in additional costs. Initially, the soil needs to be leveled, all potholes leveled and ditches filled. Then the leveled soil is covered with a layer of sand, better than quarry sand, it is easier to compact than river sand, it spreads less and is less dusty. The sand is compressed with a roller so that the sand cushion becomes absolutely flat. All unevenness must be leveled before laying the slabs.

Road slab mounting loops have two functions: they are used to load and unload slabs 1 p 30x18x30, and these hinges are also welded with special equipment, this will prevent the road slabs from moving apart and the formation of cracks in the road surface. The seams are processed concrete mortar if necessary, obtain a perfectly smooth road. If the slabs must remain in place for a longer time, then they can be rolled with asphalt on top, it will protect the reinforced concrete from aggressive influence external environment. If reinforced concrete slabs To cover roads, lay them on bare ground without a sand cushion, then such a covering will last no more than a couple of seasons and the road will have to be repaired again, that is, all the work will have to be done from scratch. Reinforced concrete products must be manufactured strictly according to technology, then the quality of the road will be optimal.

Reinforced concrete is an ideal material for construction, combining the strength of concrete and stressed steel. Road surface slabs have a huge advantage over others building materials, and they are expressed in reliability, durability and relatively low cost. They withstand regular loads and do not lose their qualities over time. If the road involves the passage of large-sized equipment, then it is impossible to do without a coating of reinforced concrete road slabs 1p-30-18. Such a road is installed quickly enough and immediately after completion of construction it is ready for operation.

The slabs can be made in any required sizes, so the implementation of the most daring engineering solutions is quite possible. The production of slabs involves reinforcing them, in some cases even with prestressed steel rods, so they are able to withstand any type of possible load.

The reinforced structure is filled with heavy concrete, which guarantees frost resistance, water resistance, strength and long service life. These boards are often used on quarry work, for the construction of forest roads along which heavy equipment travels. Such roads can be used down to minus forty degrees and last for quite a long time, after which they can be dismantled and the slabs can be reused. They will not lose their original qualities.

Road slabs represent important element in the construction of modern roads. Road slabs are used in the construction of permanent roads, temporary roads, and are often reused.

Road slabs PAG-14, as well as PDN - they are more often called PDN 6x2— have reinforced reinforcement and are made from prestressed reinforcement. These road slabs are used for the construction of airfield pavements and roads for heavy-duty transport. Road slabs PDN 6×2 compared to road slabs PAG-14 have a lower load, however, both types of these road slabs are reliable and durable, capable of withstanding multi-ton loads. Road slabs 1P30.18-30 And 2P30.18-30 are made from non-stressed reinforcement and are intended for covering permanent and temporary city roads, respectively. It is possible to manufacture these road slabs with lower loads, e.g. 1P30.18-10 And 2P30.18-10

Very often, road slabs are used for the construction of access roads during the construction of houses and other objects. This allows building materials to be delivered directly to the construction site. Road slabs are suitable for use in almost any conditions while maintaining all their characteristics, they are laid in short time on almost all types of soil; if necessary, they are quickly dismantled and transported to another site. Road slabs are manufactured in different sizes, this allows you to build roads of varying degrees of complexity. All of the above makes road slabs a popular product in road construction.