Paving concrete is a special concrete mix with enhanced characteristics used in the construction of bridges and roads. Paving concrete falls into the category of heavyweight concrete mixes, which are suitable for the construction of pavements designed to withstand abrupt temperature changes, large amounts of precipitation, repeated freeze-thaw cycles, continuous dynamic loads, environmental effects and exposure to other factors. The main concern in this type of construction is not the concrete laying process itself, but achieving an improved durability of structures under severe operating conditions. This is precisely why mixtures for road construction are produced according to a special recipe and in strict compliance with all relevant requirements and standards. Paving concrete must meet the essential requirements specified for compressive strength, axial tensile strength, improved abrasion resistance, water impermeability, frost resistance and resistance to corrosive and chemical environments.
All concrete mixes by HOUSE BETON LLC are always produced in line with the relevant requirements, mixing technology and mixing ratio. Usually, the paving concrete class is specified in the by design documentation. However, if you still have any questions, our managers are ready to provide personal professional advice on choosing the concrete mix to suit your exact needs and your budget. And our highly qualified laboratory technicians will select the raw materials and develop a tailor-made mix recipe for applications of any complexity level. We guarantee high quality of our paving concrete plus delivery to your construction site.
The concrete grade is designated by an alphanumeric code (for example, M-100),which denotes the ultimate compressive strength expressed in kilograms per square centimetre. A higher value means a greater amount of cement in the composition. The grades range from M-50 to M-1000, while the most popular grades are between 100 and 500. The higher the strength grade, the stronger, more frost-resistant and more durable the concrete.
Today, design specifications often define the class of concrete mix, which shows properties of the mix more precisely. The class of concrete mix denotes the permissible deviation from the mix quality. It shows the strength value obtained for an actual sample while the grade shows the estimated strength only. The class of concrete is marked with the letter ‘B’, and ranges from 3.5to 80. Classes B7.5 to B40 are used in domestic construction.
B25 has improved strength, water impermeability, frost resistance, and density and is able to take up significant static and cyclic loads. It is used for concrete casting of foundation slabs, floor slabs, vertical structures, reinforced concrete items, as well as industrial floors that are intended for further topping treatment.
Mixes of class B30 offer increased strength performance. They are used in applications, where the increased strength, waterproofness, and frost resistance are required, including concrete casting of foundation slabs, floor slabs, vertical structures, structural columns, reinforced concrete items, as well as industrial floors that are intended for further topping treatment.
B35 is a high strength concrete used in construction projects, where constant heavy loads are expected. Possible areas of application include bridge construction, hydrotechnical industry, foundations of high-rise buildings, industrial floors, etc.
B40 is an extra strong concrete mix. It is used in construction projects, where constant heavy loading in aggressive environments is expected. B40 has improved waterproofing properties and is chemically resistant.
Р3 — workability factor measured by concrete slump test, with a slump of 10-15 cm. The mix is used for the construction of foundations, stairs, screeds, floors and for pouring into form works. This concrete mix must only be poured using special construction tools: vibrating pokers, vibrating screeds, concrete laying machines.
Р4 — workability factor measured by concrete slump test, with a slump of 16-21 cm. The mix is used in applications of any complexity level. Due to good workability (fluidity), it fills a form work completely, so that no pores or air voids are formed. The mix can be transported over a long distance by a concrete pump or a chute system.
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