Concrete slabs paving: the main advantages and characteristics

One of the most popular coatings today is concrete paving slabs. They are used to equip yards, gardens and park areas, walkways, combining functionality and aesthetics.

Benefits

• A wide range of colors provides a beautiful appearance of the coating.
• The material is highly resistant to wear, which significantly increases the life of its products.
• Consumers are attracted by the simplicity of laying and the speed with which they are installed.
• Prefabricated elements of the cover allow for easy disassembly and restoration of the structure. This is actual when it is required to conduct any work related to underground communications.
• Concrete slabs paving are able to withstand severe loads.
• An important advantage is the fact that during the rain on the surface of the slabs puddles are not formed, since all the water flows freely into the ground through the gaps.
• In the hot season, the cooker does not emit harmful substances into the environment, unlike, for example, from asphalt.

Composition

The concrete slab must have certain qualities, which depend mainly on the components used in the composition during manufacture. The filler is a construction sand with a size module of at least two units and a granite gravel fraction of 5 to 10 mm. In addition, additives are added to the mixture with plasticizing and hydrophobizing components. They improve the technological properties of concrete, making it more durable and frost-resistant.

Main characteristics

They must meet all the requirements of GOST. Concrete paving slabs are produced according to certain standards, and their quality is due to technical characteristics, which depend on the method by which the slab is made - by vibrating or vibrocompression. In the second variant, the products are produced with a higher strength - up to 400 kg / cm², which allows to withstand loads of up to 30 tons. The level of frost resistance is also high enough (F200-300), the plates do not lose their operational properties even at a temperature of -55 ° C. At the same time they are able to tolerate at least 200 cycles of freezing and thawing. Water absorption does not exceed 5%, and the erasability index is not more than 0.7 g / cm².

Varieties and markings

Depending on the shapes and sizes, concrete paving slabs have different classifications. According to the requirements of GOST 17608-91, the type of plate is indicated in the marking: K (square), P (rectangular), W (hexagonal), etc. In the designation 6.K.7, the first digit indicates the number of the standard size, and the last one - by the thickness Products of the square form.

Today, they are very popular in the construction of pedestrian paths for people with limited opportunities, specially designed paving slabs tactile. Their surface is slightly convex, rough and has anti-slip properties. On the top of the plate there are guiding ground indicators.

Production technologies

Concrete paving slabs are manufactured with the help of different methods: vibro-roll, vibro-stamping, pressing, vibrating with loading, vibrocompression. The last one is the most common. Add a small amount of water to the cement-sand mass placed in the concrete mixer and mix thoroughly. Then the mixture is fed into the vibropress bunker and placed in a special mold, where it is compacted under the action of pressing with simultaneous vibration. The rejected products are moved to pallets and transported to the holding zone, where their hardening takes place. After that, the finished plates are sent for shipment.

The use of small-size equipment in production allows the manufacturer to quickly pay back costs by producing high-quality concrete paving slabs, the price of which is quite affordable for the consumer. Among a wide range of products of factory production, you can choose products worth 150 rubles per piece.