To one of the most sought after coatingsToday, concrete slabs are sidewalk. They are used for the arrangement of courtyards, garden and park areas, transition paths, combining functionality and aesthetics.
Benefits
- Wide range of colors provides a beautiful appearance of the coating.
- The material is highly resistant to wear, which significantly increases its service life.
- Consumers are attracted by the ease of installation and the speed of its implementation.
- Prefabricated coating elements make it easy to disassemble and repair the structure. This is true when you need to carry out any work related to underground utilities.
- Concrete paving slabs can withstand severe loads.
- An important advantage is the fact that during a rain puddles do not form on the surface of the plates, since all the water flows freely into the ground through the gaps.
- In the hot season, the stove does not emit harmful substances into the surrounding space, unlike, for example, from asphalt.
Composition
Concrete slab must have certainqualities that depend mainly on the components used in the composition in the manufacture. The filler is construction sand with a modulus of fineness of at least two units and granite crushed stone of a fraction from 5 to 10 mm. In addition, additional additives with plasticizing and water-repellent components are introduced into the mixture. 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 determined by the technical characteristics, which depend on what method the slab is made by vibrocasting or by vibropressing. In the second version, the products are obtained with higher strength - up to 400 kg / cm², which allows them to withstand loads up to 30 tons. The level of frost resistance is also quite high (F200–300), the plates do not lose their performance properties even at a temperature of -55 ° C. At the same time they are able to carry at least 200 cycles of freezing and thawing. Water absorption does not exceed 5%, and the rate of abrasion is not more than 0.7 g / cm².
Varieties and labeling
Depending on the shape and size of concrete slabspavement have different classifications. According to the requirements of GOST 17608-91, the type of plate is indicated in the marking: К (square), П (rectangular), Ш (hexagonal), etc. In the designation 6.К.7, the first digit indicates the number of the standard size, and the last - the thickness square shaped products.
Today are very popular inthe construction of walkways for people with disabilities, specially designed tactile paving slabs. Their surface is slightly convex, rough and has anti-slip properties. On top of the plate are guiding ground indicators.
Production technology
Concrete paving slabs are made usingdifferent methods: vibro-rolling, vibro-stamping, pressing, vibrating with weights, vibro-pressing. The last one is the most common. A small amount of water is added to the cement-sand mass placed in the concrete mixer and mixed thoroughly. Then the mixture is fed into the vibropress bunker and placed in a special form, where it is compacted under the action of pressing with simultaneous vibration. Molded products are transported on pallets and transported to the holding zone, where they harden. Then the finished plates are sent for shipment.
Use in the manufacture of small-sizedequipment allows the manufacturer to quickly recoup costs by producing high-quality concrete paving slabs, the price of which is quite affordable for the consumer. Among the wide range of factory-made products you can pick up products worth from 150 rubles per piece.
