Why vibropressed tiles the best choice for paving: evidence from the first person

The nuances of the production cycles, performance products, scope, operation and maintenance

Despite the diversity of materials for paving, in the private sector it is most needed concrete paving slabs. It is placed in the entrance areas to the blind area, recreational areas, and, of course, it is often paving garden paths. However, tile tile discord, because of its basic technical and operational characteristics depend on the production technology. To date, two main ways: vibrocast and block-making. Accordingly, we have to choose between vibrocast vibropressed and tiles. And to understand how they differ and what material to prefer in different situations, we help companies Tsemsis specialist. He will give the most detailed answers to the questions of the participants of the portal.

Content

• Raw materials base and production technology and vibropressed vibrocasting tiles
• Consumer properties and vibropressed vibrocasting tiles
• Benefits vibropressed tiles
• As the amount of water-cement ratio affects the characteristics of the tiles, the method of visual control

Raw materials base and production technology

igorkzn

Member FORUMHOUSE

And between the casting and vibropressed concrete paving stones (45-60 mm) - what to choose for the blind area? I understand that vibropressed slightly more expensive than casting. Why? She's stronger than vibrocast?

Elena Maslova

Director of Development Tsemsis plant

First of all, you mustunderstand the production technologypaving slabs. Vibrocast - archaic production technology, It is a fully manual method, generally carried out in primitive conditions. Peskotsementnaya mixture(Cement + sand + additive)I loaded in reusable plastic forms a trowel and compacted on the vibrating table. Further forms with articles transferred onto racks for storage. Hardened stone is called "paving tiles."

- paving stone production process vibrocompression method is fully automated.

At the first stage the concrete mix (cement, sand, stone, additive) is loaded into a die - mold is compacted by pressure and vibration. The duration of the vibration is monitored by special sensors and going to the maximum compaction of the concrete mix and the required height of product in the whole technological pallet. Next, conduct immediate demoulding products and automatic transfer of pallets from production in special chambers humid heat treatment with the desired parameters of humidity and temperature to achieve the necessary strength concrete.

In automatic mode of production by vibropressing, unlike vibrolitevogo method, composition Concrete is designed for different operating area according to GOST 17608-2017 "Plates Concrete Sidewalk."

The manufacturer simply can not use any sand, gravel and cement for the production of tiles. According to GOST strictly regulated quality indicators inert material and a binder on the input control, and physical and mechanical characteristics of the concrete quality of the finished product on the acceptance:

• compressive strength;
• flexural strength;
• water absorption;
• attrition;
• frost.

Of course, the tiles produced by block-making, will be "stronger" stronger and denser than tiles manufactured by vibrocasting.

As for the blind area, its main purpose - the protection of the basement of the building from possible waterlogging, ensure reliable drainage of precipitation livnevki system and decrease heat loss, due to the sharp drop temperature. High operational load on the blind area is not expected to call the machine will not, therefore, be sufficient to perform the paving of the paving slabs, 40 mm thick.

Consumer properties and vibropressed vibrocasting tiles

CrossVik

Member FORUMHOUSE

Tell me, what is different in the consumer properties and vibropressed vibrocasting paving slabs?

Elena Maslova

Vibro stone produced in strict compliance with the requirements of the water-cement ratio. Careful selection of the formulation with the mandatory use of coarse and fine aggregates (gravel and sand of various fractions) in a strict proportion provide dense packing of fillers stratified compacting concrete mixture. Such tile has high rates of compressive strength, frost resistance (not less than 200 cycles in saline) and low water absorption (less than 6%) -basic criteria of quality and durability. Further, the facing layer vibropressed tiles due to technological features of production has rough surface, which in turn, provides a non-slip effect during winter operation.

- vibrocast paving slabs due to the high water content of the concrete mixture has a high porosity and hence lower density and durability. In winter operation due to frequent temperature changes, which is particularly important for the climate conditions of the type North-West region in the available pores and capillaries damaged by water or its wedging action destroys the structure concrete. Vibrocasting tiles surface is smooth, glossy, which affects off-season operation - formation of ice on the surface, in the winter the tile surface may resemble a skating rink.

The table below shows the comparative characteristics of concrete products fabricated by different technologies.

*Note.concrete mark on frost take not less thanF200, wherein the frost resistance of concrete is determined by saturation concrete specimens before the test plates with 5% aqueous sodium chloride solution, in accordance with the GOST 10060.0.

Benefits vibropressed tiles

Madbot

Member FORUMHOUSE

I want to put a parking lot paving. I read a bunch of sites and topics. I did not understand for themselves:

• Vibrocasting still less strong than the block-making?
• Do vibrocast some operational advantages? Or just more vibrant colors?
• Builders say that with vibrocast easier to wash off the dirt with the same Karcher, plus, they say, for many years they have been such a lie and nothing. But I can see that the city is often split (though block-making, too). In principle, I would not say definitely want "glossy" surface, so can stay at the block-making and not to bathe? But for myself I want to understand, I may have vibrocast some advantages (in addition to the appearance that someone likes).​

Elena Maslova

1) vibrocasting tiles is less solid and compact than vibropressed because:

• A) there is no gravel (main component responsible for the strength and durability of concrete products).
• B) during its production requires a high water content, which upon solidification of concrete mixture evaporates and leaves a large communicating pores and capillaries. During winter operation they are saturated with water and salt precipitation reagents, water expands upon freezing in the volume and the concrete is destroyed. In case vibrocompression pores formed in the concrete are fragmented and closed, the water to infiltrate therein from the outside can not.
• V) technology with vibration casting concrete products compacted by vibration, with vibro compaction technology It occurs simultaneously under the influence and vibration of the punch pressure, density of concrete products significantly svezheotformovannogo higher.

 - 2) Only bright colors. In general, it is believed that vibrocasting Pavement more attractive to buyers due to the variety of shapes and colors to paint in full. When the maximum allowable dosage of the dye color vibrocasting tiles obtained more dull due to the high water-cement ratio at the factory. Therefore, manufacturers add more pigment to achieve a bright and rich colors.

However, few people know that high doses of coloring pigment adversely affect the strength of the finished product.

In addition, the technology has been applied vibrocompression quality granular pigment which has high lightfastness, absolutely does not burn out, can be used in low dosages, this gives a bright beautiful product.

- 3) Of course, with the smooth surface of the dirt washed off much better, but Karcher can perfectly wash the dirt from the surface and vibropressed tiles. Vibrocompressed chopped tiles in urban public spaces can indeed be found. This is due to the fact that there are two ways of production vibropressed tiles - a single-layer and double-layer molding. When the single-layer method, the main components of the concrete mix - cement and sand, with a dual-layer - core layer - cement, sand and gravel, the facing layer - cement and sand. concrete base layer is responsible for the strength and durability of the whole structure, and the facing layer - for aesthetic appearance and durability. These are two different structures in the sense that only a single integrity provide all the requirements imposed by the concrete.

The two-layer tile is more dense and durable and frost resistant than a single layer, and the more than vibrocasting. Typically, a single-layer tiles can crumble in case of non-manufacturing technology, however, there are also cases that the facing layer bilayer vibropressed tiles may fly off during operation. The reason - violation of manufacturing technology: incorrectly picked up moisture facial and basic layers of concrete. But this is rare, as a rule, two-layer vibration pressing technology provides complete automation of the process and the human factor in this case is minimized.

As the water-cement ratio affects the characteristics of the tiles, the method of visual control

Serdoc

Member FORUMHOUSE

According vibropressed well as vibrocasting tiles are many nuances: if production vibrocast exceed the volume of water, the tile will be destroyed in compliance with all other rules. A production vibrocompression DSP requires rigid and excess water leads to sticking of the press, and a dry mixture - for destruction. Tiles of the dry mixture strongly absorbs water and dries long, and the maximum possible amount of water, to the point of sticking, not only absorbs and dries quickly as natural stone. These two factors are very important and are also affected by the timing of the operation and appearance, as well-known manufacturers.

Elena Maslova

It really is. You must correctly select the water-cement ratio with any method of production of paving slabs. However, in case vibrocompression this nuance is limited, the manufacturing process is automated, any mixer equipped with moisture sensors, flow regulated dosage hygrometer. In case vibrocompression necessary to obtain the best possible moisture content of the concrete mix, which is estimated by the criterion of the formation of "ticks", "broaches" on the side surfaces products visually.

On the left - a tile with optimum moisture to the right - from the dry mixture

Output

Vibropressed Pavement - universal, the most strong and durable material. And if at the beginning of the development of the technology choice of shapes and colors were limited today vibropress for decoration in no way inferior casting. Of course, if we talk about the quality of factory production. Coupled with compliance paving technologyTied to the type of soil and the groundwater level, the finishing layer vibropressed tile is "packed and forget" until tired.

More on paving technology for different conditions You can read one of the previous material. For those who have an urgent need to frost heaving - on budget and reliable paths for clay soils and high groundwater level. In the video - rules laying paving slabs from a specialist.

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