Concrete. Concrete admixtures

Additives improve the quality of concrete and added to it with additional special properties that allow to accelerate the pace of construction, as well as significantly reduce the cost. The special properties of concrete are needed both in the construction of roads and airfield pavements, waterworks, docks, swimming pools and special facilities, and in solid construction of residential and industrial buildings, etc. At present, there are many different supplements. For hot climates such as hardening of retardants are often used. In the manufacture of floors, which are amenable to freezing / thawing, such as the floors in the open air or in freezers are encouraged to apply (except for the use of inhibitors), only the air-absorbing chemicals. Supplement is recommended for concrete with high demands on frost resistance, durability and water resistance. in civil and industrial construction (prefabricated, thin-walled and gustoarmirovannye design) for construction of hydraulic structures (bridges, dams, sluices, tunnels, basements, swimming pools, basements, paving tiles, self-leveling floors), etc. Concrete Additive Lignopan-B1 - plasticizer based on fractionated lignosulfonates, inorganic salts, simple copolymers of acrylic series. Copolymers of acrylic series, and cellulose ethers bind free water and significantly reduce the solution and water separation. Used in the manufacture of ready-mixed concrete and mortar. Concrete Additive Lignopan-B2 - Plasticizers - Accelerator hardening. Used in the manufacture of precast concrete, concrete blocks, for monolithic house-building (removal of sliding formwork in 12-14 hours, followed by stress), paving slabs, etc. The use of additives Lignopan-B2 reduces the water content in concrete (solution) by 15-20% to get to the second intermediate strength sutei 70-85% of the branded under normal conditions of hardening, or to reduce steam consumption by 30-40% at termovlazhnoy processing reduce water separation of concrete mix to 0%, increase brand waterproof to 1 degree. Concrete Additive Lignopan-B3 - a plasticizer for commercial and precast concrete, which contains the same ingredients as the Lignopan-B1 but with a different ratio. Used in the production of commodity and precast concrete to increase the mobility of the concrete mix with P1 to P3, reducing water demand by 12-16%. Used for both normal concrete curing and during the heat-humidity treatment (TVO). In the GUT flow additives makes 0,17-0,2% (by dry weight) of cement weight. Concrete Additive Lignopan-B4 - it's antifreeze - plasticizer (up to -18 C), allows for concreting at low temperatures, to reduce water consumption by 5-10% mixing with well-moving mixtures. Concrete Additive CMC - is a complex mineral - chemical additive, the main effect of which reduces the permeability of concrete and increase their resistance when operating in hostile environments. The main effect for concrete otdeystviya supplements - is: to increase the strength of concrete at 180-200% (due to compaction of the structure and the presence of amorphous silica, and plasticizers); improving water resistance of concrete by 4-7 degrees (W20 watertightness is ensured by the sealing effect of the additives, This is achieved by reducing water consumption more than 30-35%) increase in mobility (increase from P1 (2-4 cm) to P5 (20-25 cm) increase in frost resistance of concrete (provided by the introduction of specific components that contribute to the involvement of a finely dispersed air, obtained by concrete freeze-thaw cycles to 800-900). For the convenience of laying of concrete used plasticizers and superplasticizers. concreting in soils saturated with water, as well as for the construction of swimming pools and all sorts of tanks used additives that increase several times watertight concrete.