Introduction

STABIZOL is an innovative concrete block based building system. It is ideal for various types of vertical structures. The vibration pressing of concrete blocks from a semi-dry concrete mixture is a technology found its way to Slovakia only some 15 years ago and that is why from the historical point of view this technology is still not widely used in practice, in spite of its excellent economics. It has achieved the greatest success in USA. Also nearly in whole Europe for more than 40 years one particular walling material has been used for building ordinary structures more than any other – the new generation vibration pressed building blocks. For example, in France they represent 92% of the walling unit market. The system is being developed for 50 years and it is nearly perfect. In Slovakia not only the technical standards, but also rather conservative approach of the professional community to the use of concrete in the residential construction lag behind this trend. In our country a honeycomb brick is used as a reference in most quality comparisons. For example, in France law requires concrete building blocks to be used as a reference when comparing other building structures as to their load bearing capacity, ruggedness, thermal and sound insulation, water absorption, fire and seismic resistance, cost efficiency – i.e. all properties. The Stabizol building blocks feature a tongue and grove connection with 100% vertical load bearing efficiency that makes the wall enormously strong: one linear meter of the wall (always 20 cm thick, 10+10) can bear at least 80 ton. It is not necessary to make a ring beam - reinforced concrete beams and blocks of the floor are laid directly on the wall, it is just necessary to make sure that the beams rest on both load bearing layers. Windows are fitted to one of the load bearing layers; the window reveal has insulation properties and doesn't freeze. High load bearing capacity of these building blocks allow all interior partitions to be separated from the exterior layer of the outer wall by thermal insulation preventing creation of thermal bridges inside the house. When not at home you don’t have to heat your house. It’s enough to switch the heating on when you come home – the house is heated within a few dozens of minutes with high degree of accumulation.

Price

So, what is it all about – why such building blocks became the most recommended walling material in the European Union? What makes them so successful is their low price, of course along with their highest quality and great variability of use. The new generation building blocks are gradually finding their use all over the globe – in Korea, China, Africa, South and North America, Canada. The STABIZOL building blocks are manufactured using walking vibration presses and the thickness of their walls is 30 to 35 mm. What is most important in terms of their price is the actual concrete – it is made of well mixed semi-dry mixture of screened low-fraction aggregate, only 6 to 8 weight percent of cement and 20% of air bubbles. We take the most effectively produced concrete, blow some air into it, shape it into the strength wise most effective shape and we get the least expensive building block in the world. In France burnt bricks practically seized to be used 50 years ago for their prohibitive prices due to their thermal processing and relatively low thermal insulation. The basic model of the STABIZOL building block has the weight of 18 to 20 kg and dimensions of 20 x 60 x 20 cm. The thickness of the load bearing wall for an ordinary building is always 2x10=20cm. The building blocks are perfectly square, straight and are fitted with bonding projections in both plains. They come in various shapes – straight, corner, half-size, round and halfing blocks. The quality is defined not only by material and technical indicators, but also by the ratio of the overall price to such global indicators. Let's look at this system from the point of view of price per square or cubic meter of the outer wall. One square meter of the outer wall is built of two partitions comprising in one layer 8.25 building blocks and 4 wall ties. The basic material price per m² including VAT is 16.5 x $1.14 + 4 x $0.3 = 18.80+1.2 = $20/m². What we need to add to it is the price of thermal insulation, approximately $4/m² (recycled crushed styrofoam) in 10cm thickness and labour, which is the only thing that is perhaps 1.5 times more intensive than that of conventional brick laying, because although the block masonry is easier, it is done in two layers. This drawback will be compensated during wall finishing – the wall is flat and porous and therefore requires only a thin layer of towelled-on plaster. Time needed to erect a 1m² wall is 1/2 hour. Considering the above, the total unit price of $900/m² for a 30 cm wall is the best on the market in the given quality. With the Stabizol building system the price of 1m² of a wall in relation to its thickness is given by the length of wall ties and thickness of the insulation. Longer wall ties are not more expensive than shorter ones and the price of insulation to be inserted into the space between the building blocks is substantially lower than that of the hardened insulation materials used for external thermal insulation and also the installation costs of such insulation are incomparably lower. While the price of other materials grows in proportion to their thickness, with STABIZOL an increase of the wall thickness will have only a slight effect on the price, but the most important positive property of a building material – its thermal resistance, will grow dramatically. The origin of the system, patent, trade mark, raw materials and prices are 100% Slovak. Support Slovak producers! A price comparison as of March 2005 is in the following table.

This exceptional price is not achieved by compromising any of the building indicators. The hollow building block features a sound attenuation of 56 dB (for comparison – full concrete building block has the attenuation of 59 dB). The building blocks are also available in a version intended for walling with no surface treatment. The concrete mixture can be coloured, or there is whole range of patented versions with various surface finishes, such as corrugation. Such building blocks are used for both exterior and interior walling and do not require plastering. As the investors around the globe have less and less money, this has become a preferred way of building. The STABIZOL concrete block used in the sandwich system has one unique property – in a thin wall the moisture doesn’t rise any higher than to one half of the block’s height before it dries out. This allows builders to use the first row as a ground damp insulation and make the second row ever dry. No damp insulation is required under the wall on the concrete foundation, if it is above the ground. It’s needless. Continuous masonry can be combined with the reinforcing building blocks featuring internal columns which, when filled with concrete create reinforced concrete pillars. This ingenious design allows you, if needed, to create side posts around windows and doors or pillars along the entire wall length. The outer wall of a new building, strong and sturdy, is always isolated in the middle by robust thermal insulation. The exterior concrete walls are perfectly plain and they require only a few millimetre thin coloured towelled-on plaster. As the dampness doesn’t rise from the ground, the facade is never wet (save from rain), it doesn’t crack nor detach itself from the wall. However, the new generation concrete blocks have wider range of applications. Their weather resistance is quite unique – the older the concrete, the harder and of higher quality it is. Even when rained on, the blocks never slake, crumble or crack. That is why they are used for all sorts of garden fences, garages, workshops, business premises, foundations, underfilling, etc. The masonry of garages, warehouses, various business premises, family house workshops etc. is usually not finished even at the exterior – except for the ornamental joints. Another advantage is that it is easy to keep it clean – from time to time the wall can be washed by pressure water both from the exterior and the interior and any problems with maintenance or dust removal (what is often a problem, especially from the fire protection point of view) cease to exist. Main application, where the advantages of this building system stand out the most, is in building the outer load-bearing exterior walls. Let's look at the advantages of the system from the application point of view and essential building indicators.

M10-M10	MS10-MS10

Description – outer walls

The topmost quality indicator for outer walls in home or industrial building is a high thermal resistance coefficient. Of course, we are trying to achieve it for the lowest possible costs. This coefficient can be influenced by an effective selection of materials and their suitable arrangement in the structure. We believe that the STABIZOL system is in this respect an ideal compromise. The system comprises concrete as the load bearing material – concrete bears against concrete thus effectively bearing the load, and the insulation that prevents heat dissipation.

Basic description of the sandwich composition: The building system of the said construction is made of two layers of concrete building blocks in shape of a perforated prism with internal chambers. One side the building block is fitted with a tongue projecting in two planes of the prism and on the other side the block is fitted with a groove corresponding to the shape of the tongue. With blocks laid on top of each other in the 1/2 bond the tongues of the bottom blocks fit into inner chambers of the blocks on top of them. The building system based on these building blocks is characterised in that in the building block there is a top groove perpendicular to the block and this grove is used for linking two layers of building blocks by means of wall ties fitting into these groves. The wall ties provide for buckling stability of the wall construction and reduce any local thermal bridges to minimum. By inserting thermal insulation into it, the cavity formed between the blocks and defined by the length of the wall is used as an insulation layer. An advantage with respect to stability and labour intensity is that it is not necessary to use a thick mortar layer – joints are stable in both directions even with a thin layer of cement grout. After that a towelled-on plaster as a finish is sufficient for the exterior (The layout of basic composition of the load bearing walls made of MS10-M10, MS10-MS10 systems).

Thermal resistance

 

R – thermal resistance of the outer structure is the most decisive parameter of materials used in the residential construction and it actually refers to structure’s capability to insulate and to reduce dissipation of the interior heat – energy to minimum. Again, it is about price and money we have to pay to operate the building due to energy dissipation. The quantity of the dissipating heat is a function of thermal resistance and dissipation area. 

From the point of view of outer shell area a sphere would be the ideal shape, which translates from the construction building point of view to circular and round walls. When we simply compare the areas of square and round outer shells, the difference may be up to 13% to the benefit of the round shape. This perspective of maximum possible reduction of energy dissipation achieved by a sophisticated design of the outer shell, openings, roof and the ground floor is characteristic for low-energy buildings. In our conditions the STABIZOL system is clearly the most suitable for this purpose, one of the reasons being that you can use it to build a round house. In addition to thermal resistance another qualitative indicator of building structures is optimal interior climate in terms of its breathability, i.e. diffusion of water vapours, thermal accumulation and often also soundproofness.  

(Detail – thermal diagram of a structure).

If we look at the temperature curve of thermal transient of the Stabizol sandwich system, we find out that the interior layer of the building blocks insulated by thermal insulation acts as a heat accumulator and at the same time the blocks containing pores and chambers allow for easy diffusion of water vapours – the diffusion resistance is equal to 40cm thick brick. The dew point is located in the insulation layer between the blocks. If there should be any condensation of water vapour, it would occur at the face of building blocks forming the exterior layer and this phenomenon has no negative impact on the structure or the comfort of the interior. That is another thing to consider when choosing thermal insulation. It should be breathable and have high insulation capacity. Suitable materials include glass wool, cellulose-based hardening foams or crushed styrofoam. The insulation doesn’t have to meet any other special requirements and that is why recycled or second class materials may be used, for instance recycled crushed styrofoam, price » $6.16/m² for 20cm thickness. The thermal resistance of a 100mm building block is only R = 0.2 m²KW^-1. To secure stability of the two layers of building blocks zinc plated U-shaped wall ties are used. The wall ties make sure that the structure acts as one homogeneous unit also in relation to horizontal thrust and buckling. The zinc-plated wall ties represent only 0.0006% of the area and therefore create truly minimal thermal bridges. Wall ties – are made of zinc plated steel wire bent 90° on both ends with a 15mm overlap and having minimum tensile strength of 550 MPa. Lengths of the wall ties depend on the with of the structure – 150mm (for the structure width of 300mm), 250mm (for the structure width of 400mm) and 300mm (for the structure width of 450mm). Minimum number of wall ties needed for a unit area: 4 wall ties per 1 m² (f = 6mm, $0.3 each).  

Thermal accumulation

Heat transmission, passage and radiation. Efficient heat accumulation of a layer of construction material depends on its specific heat capacity (c=J.kg^-1.K^-1) which in turn is a function of its specific density (it is high for concrete) and also on the insulation layer that would hold the accumulated heat in the interior. Materials with good accumulation capacity usually also have high thermal conductivity and therefore it is desirable to break this thermal bridge to keep the heat in the interior. From this point of view the sandwich structures made of STABIZOL concrete blocks insulated in the centre or at the outside are ideal.

Soundproofness

When the sound hits a vertical partition structure, part of it is reflected back, part is absorbed and part breaks through. As the reflection depends on the surface finish, we will look at the capacity of a STABIZOL structure to absorb sound and make conclusions as to what portion of the sound breaks through the structure and defines the construction soundproofness. Suitability of materials for sound attenuation structures is judged by so called wave resistance Z /N.s.m^-3/ = specific gravity x longitudinal wave propagation velocity. This velocity is dependent on material elasticity. Concrete has high specific gravity and the secant modulus of elasticity of 4600 MPa, which makes a structure made of such material highly soundproof. Another variable directly proportional to the above is the sound attenuation. The STABIZOL blocks have the sound attenuation of 56 dB.

Strength, stability and durability

With the Stabizol system we followed the principle of efficient and stringent separation of functions of individual materials. In practice this means that the load bearing layer of the building blocks is designed to have maximum load bearing capacity, while the thermal resistance of the blocks is secondary. The heat insulating function is performed by a high-quality thermal insulation that doesn’t have to meet any other special requirements and doesn’t have to be self supporting, i.e. it can be a loos-fill material (sawdust, straw, crushed styrofoam). In the simple composition (M10-M10) noses protruding from blocks in two planes create a tongue and grove interface between blocks and in the horizontal cross-section theses noses make sure that concrete is resting against concrete. The joint filler is also made of concrete grout with the same load bearing capacity. Such composition dramatically increases the total bearing capacity and stability of such structure in comparison with traditional methods of masonry where 1cm thick mortar layer between blocks was a multiple times weaker part of the structure. In addition, inner cross partitions of conventional building blocks didn’t vertically rest among each other, i.e. from the bearing capacity point of view they were ineffective. Practically, the bearing capacity of concrete blocks in the Stabizol system is approximately 2 times higher than that of conventional building blocks of the same enclosed volume. That allows you to build bearing outer walls up to 2 or 3 storeys above-ground depending on the loading of the floor structures. Masonry’s average compression strength is 1.7MPa, design strength according to the Slovak Technical Standard STN P ENV 1996-1-1 is 0.7 MPa and average compression strength of the building block is 9 N/mm². The bearing wall structure can be variably reinforced by the MS10 building blocks with built-in pillars. These properties have been certified based on tests conducted by an independent laboratory of the Building Testing and Research Institute TSUS Bratislava. Standard M10 building blocks of the Stabizol system are complemented by MS10 blocks. This way it is possible to strengthen one or both partitions thus the entire bearing wall in 60 cm intervals or their multiplications by reinforcing the dedicated half-circle chambers with steel and filling them with concrete. The bearing system – e.g. reinforced concrete beams or prefabricated panels, are then laid on these pillars. The reinforced bearing wall composition of the Stabizol system can be used for bearing walls up to 4 or 5 storeys above-ground.

Water vapour diffusion

Material’s ability to let air and water pass through has an impact on the interior climate, but also on thermal and technical properties of the material. Damp material has higher heat permeability. Water vapour diffusion follows similar rules as the construction heat permeability. In our climatic conditions, and also with the view of reducing operation costs, it is important for the peripheral vertical structure to be optimally vapour-permeable so that a comfortable natural climate can be created in the interior without a need for any technical air-conditioning system. Although the use of a water vapour barrier in the vertical structure eliminates thermal losses due to increased dampness, it also prevents walls from breathing and kills the interior climate. Diffusion resistance is dependent on the wall thickness and on the water vapour diffusion coefficient. Diffusion resistance of the air gap is equal to zero and there is a uniform vapour transfer from the area of higher diffusion potential to area of lower potential. So, in the Stabizol system the total diffusion resistance of the wall is equal to the sum of resistances of all partitions within the building blocks – i.e. an equivalent of 12cm of concrete. Concrete as a material has 3 times higher diffusion resistance than burnt bricks. The diffusion resistance of the Stabizol system two-layer wall is approximately the equivalent to 36cm of brick masonry, which is considered ideal for the climatic conditions in Slovakia. 

Fire resistance properties

Concrete and products made of concrete are not combustible and generally have very high resistance to fire. Distortion due to high temperature occurs only after a very long time of exposure and in combination with other effects, e.g. rapid cooling or soaking. Based on the elaborated fire resistance expertise the STABIZOL products were automatically classified as Class A – Non-combustible. According to STN730821 standard and the methodology of Mr. Reichel the minimum fire resistance of a 100mm wall is 45 minutes and double-wall 90 minutes. These indicators show that the Stabizol products are not only suitable for all bearing and self-supporting vertical structures in residential construction, but they can also be effectively used for building simple fire walls, elevator hoistways, fire separating strips, etc. 

Harmlessness to health and environment – traditional, well proven material

One very important factor in the quality assessment of construction materials is their harmlessness to health and environment. Not that there would be materials proven to be harmful to health knowingly sold at the market, but from the history of civil engineering we know that there were and are some new synthetic materials appearing, harmlessness to health of which cannot be undoubtedly proven shortly after their introduction to the market. That is, they have yet to prove their qualities over longer time of their application. What is important in terms of environmental friendliness is the amount of emissions produced and energy required to manufacture a unit volume of the material, need for and method of recycling after the end of its life, or production of other harmful products in the process of material manufacturing, installation or distribution. Even from these aspects concrete (artificial stone) made of aggregate, cement and water is exceptionally environment friendly, natural, harmless to health, historically proven and free of possible negative surprises in future. 

Damp-proofing capacity of the lower structure, cold resistance

The Stabizol building system and blocks used for vertical structures have one very useful property – damp-proofing. That is due to the fact that dampness doesn’t rise through thin partitions of the building blocks with air chambers any higher than to 1.5 times the thickness of the thickest partition. In practice this means that dampness rises maximally to 5cm of the height and width of the building block and even that is quickly dried out by air circulation. This allows builders to use the first row as a damp insulation and make the second row ever dry. No damp insulation is used under the wall on the concrete foundation, if above ground, as it is not necessary. Of course that doesn’t apply for insulation against confined ground water – if it is there, some suitable insulation is desirable. Cold resistance of concrete structures depend on concrete dampness. Dry concrete is absolutely cold resistant and there is no mechanical stressing due to freezing cycles, except for stress caused by the expansion of ice in pores and gaps of the frozen concrete. However, also wet concrete is relatively highly resistant to freezing – it will withstand several hundred cycles. Considering low water absorption we can claim that in terms of its cold resistance the Stabizol system is one of the most suitable materials for load bearing vertical structures.

Construction demands, construction details, installations – wiring, sanitation, water, heating

The only construction aspect where the innovative nature of the STABIZOL system is not an advantage is its labour intensity during construction. Although the new building system is in fact very simple – masonry work is actually an assembly on cement grout and surfaces are straight and precise, you still need to erect two layers connected with wall ties and the system is just NEW! That is, it will take some time before a team of builders get used to the new STABIZOL system and learn main principles of working with it:

-            to elaborate a specific plan taking into consideration system differences prior to starting any works,

-            to use machinery to distribute building blocks to handy locations around the construction site, as they are relatively heavy,

-            the foundation under the blocks must be perfectly level with prepared wiring, plumbing and other openings,

-            the first line of building blocks must be flawless – perfectly level and well thought of with respect to partitions and necessary splitting due to atypical dimensions, window and door openings, chimneys, installations, etc.

-            horizontal undercutting of one layer is undesired and laborious. Outlets for electrical installations, sockets, switches, antenna cabling, telephone cabling, central vacuum cleaner, heating, water, sanitation, air-conditioning and everything else is desirable and much easier to do during the construction of the double wall,

-            all installations are fitted to the gap between the layers; it is necessary to install them at every storey early enough before the wall gets too high,

-            to install double window and door lintels and for windows wider than 150cm also reinforced window jambs from the lower layer of building blocks,

-            early plan for atypical details – prepared high quality thermal insulation to prevent thermal bridges from forming in the critical details, relative difference in local thermal resistances may cause condensation of water vapours. Provided that the above principals have been considered, the total labour intensity, especially when taking into account finishing with no need for rendering, is absolutely the same as that of other similar systems. If we take into consideration problems due to system novelty, we could say that building the double wall is 1.5 times more labour intensive than conventional bricklaying.

Straight partition walls

Straight partition walls are built using M10 building blocks. The partition walls are again 10cm wide and have good sound attenuation. Right angle wall terminations are made of corner or quarter-round building blocks. Blocks are bonded with in ½ bond, their tongues fit into groves in two directions and their jointing with cement grout is similar to that of the outer walls. Although the partition wall is statically very durable, we don’t recommend using it as a load bearing wall due to its subtility and risk of buckling. If strengthened with MS10 building block, it can bear a load of, for instance, a wooden ceiling. To terminate a partition wall and finish masonry there are half blocks. You can drill holes into it or route electrical wiring through it, but you have to install it during the partition wall building.

Noise barriers and curved partitions

Blocks with a rotary 0-90° swivel joint can be successfully used in road construction and for building separating noise barriers near communications. A unique advantage is an ability to build a structure of any shape, including a bellows-shaped barrier with blocks joined in an obtuse angles breaking the sound waves and thus contributing to their attenuation.

In the interior of buildings there were practically no curved partitions used, especially because they were difficult to make and there were no suitable materials available in the past. The Stabizol system features an MO10 building block of a simple design. With these building blocks one can build any curved partition made of 30cm segments linked to each other vertically by a swivel joint and horizontally by tongues and groves. In this case the protrusion is not at the very edge, but the benefit of tongue and grove is maintained. Building blocks for building full-bodied round partitions have wide range of applications, because such components are indeed absent in current civil engineering, although from the architectural point of view they are very much desired. The figure shows swivel joint building blocks that can be swivelled to any angle. 

MO10

Support walls, terraces, permanent formwork to be filled with concrete

The Stabizol building blocks are lightened by chambers used as patented joints and for aeration of vertical structures. Thanks to versatile use of wall ties this system may have a number of dimensions. A permanent formwork of various widths formed by two layers of building blocks and filled with a concrete mixture is a variable alternative to the support wall used in basements or free standing. The air chambers may also be used for reinforcing the structure as the chambers are trough in vertical direction This way in combination with pillar, round and corner building blocks we can create terraces, coves, support walls, garden architecture and other auxiliaries. 

Foundations

M10 building blocks are successfully used also for strip or pad foundations under vertical load bearing structures. In this application the foundation structure is made of the Stabizol blocks installed as permanent formwork joined by wall ties and then filled with concrete mixture. The foundation width depends solely on the length of the wall ties and they can be put together with a great precision. That is very helpful especially in loose subbases and in comparison with simply filling it with mere concrete mixture the price is only 10% higher. A matter of course are corner and separation blocks that increase the building comfort when you need to put together right angles of the permanent formwork at desired dimensions.

Underground structures – basements

Vertical underground structures are quite specific constructions, as there are two additional factors affecting the structure – soil dampness and horizontal thrust. Damp insulation including the reception wall is usually more expensive that the actual load bearing structure. With the Stabizol building blocks it is much less of a problem, because the soil dampness doesn't rise any higher than to 1.5 times the thickness of the thin block partitions, i.e. maximum to one half of block’s height. Air circulation causes it to dry out quickly. This allows builders to use the first row that is in touch with the soil as a damp insulation and make the second interior row ever dry with no moulds as there is 10-20cm air gap between them that acts as insulation and can be vented above the ground. In case of confined ground water an additional insulation is necessary, but only to the elevation under risk. Building blocks are joined by wall ties positioned in short intervals and structures made of such blocks resist also to vertical thrust. From this point of view there are many options for strengthening the outer layer of blocks by chamber reinforcement or using the pillar blocks, depending on requirements and strength calculations, and still maintaining good insulation properties. 

Fences, enclosures, separation hedges

Versatility, lowest price of the material, simple joining, auxiliaries such as roofing and brick-like lining make the STABIZOL system suitable for complete design of fence structures. A combination of straight M10 blocks reinforced, if needed, every 60 cm by the pillar MS10 blocks create an effective fence. We recommend to consider the height, length and anchoring of the fence. Depending on the above variables we recommend to build a simple foundation 30cm wide and 30 to 60cm deep. For this purpose you can put MS10 building blocks to the excavated foundation strip and fill it with concrete. For fences up to 2m and with no lateral thrust it is enough to use MS10 blocks as every fourth block, i.e. pillars every 2.4m. If the fence is higher than that and longer than 9m or stressed by some other forces, the reinforcing pillars may be positioned every 1.8m, 1.2m or every 60cm. The fence can be terminated to 90° by a corner block. It is important to alternate the direction of block laying. Atypical curved fences can be built using MZ blocks that allow creating any angle ranging from 0 to 90° every 60 cm.

Chimneys and columns

Round building blocks allow creating round 45° or 90° corners. These blocks are also compatible with building accessories, the tongue and grove fits together in both directions and by putting these blocks together round construction elements are created. By laying always four O10 blocks on top of each other in ½ bond and, if needed, by filling it with reinforced concrete you can create a robust DN 40cm column. Into a hollow circular structure formed by rows of four O10 blocks you can insert DN 20cm flue lining and thus create a chimney body with DN 18cm flue.

Shafts, wells, swimming pools

Vertical structures of building auxiliaries are equally important as the carcass. Even here the STABIZOL blocks, straight and round, can be used with an advantage. Water-supply and heating chambers, but also wells can be built either as square or round, ranging from small dimensions to several dozen meters large structures, such as swimming pools. Swimming pools can have double walls with the middle gap filled with a watertight concrete mixture, or a single wall reinforced with MS10 blocks, if needed, and coated with a waterproof swimming pool liner. 

 

Building auxiliaries – stairways and fireplaces

The STABIZOL building blocks can also be used for building other structures of building auxiliaries, such as stairways. Provided that the step height of 20cm is maintained, the building blocks can be used as permanent formwork for string boards. The round blocks can be used for round stairway lining. The STABIZOL concrete blocks can also be used for building foundations of fireplaces and kilns. However, in this case it is necessary to make sure that the blocks don’t come into direct contact with fire, because intensively heated concrete will crumble and lose strength. The figure shows a schematic drawing of a corner fireplace using Stabizol blocks.

Auxiliary concrete products, brick veneer siding, pavement

Slovholding a.s. offers also other auxiliary products made of vibrated concrete, e.g. brick veneer siding, pavement and fence roofing. Brick veneer siding made of pigmented concrete – after filling the gaps with mortar it resembles rustic brickwork of various finishes. Suitable for exterior and interior of stylish buildings. The same applies to our pavement.  

For answers to any questions you may have, information about further details or construction advisory services please contact as at:

  SLOVHOLDING a.s., Hlavná 1, 900 66 Vysoká pri Morave, Slovakia, IČO: 31389163, IČDPH: 2020304814,

Tel: +421 2 6545 8591, +421 2 6545 8592,  www.slovholding.sk , info@slovholding.sk .

 

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