Best concrete admixtures cheaper 350 rubles for special strength, frost resistance, the acceleration of hardening, corrosion
Dec 20, 2019
It would seem, what to improve concrete quality, when in its production all the rules and designed the main fillers (sand, cement, gravel, water) were observed. Just a man accustomed to all improve. It is possible to make a concrete mix better. Tell us about the best additive in concrete, which can be useful to builders.
Additives can enhance the strength, ductility, cold resistance, protection from salt water resistance, crack resistance and the like. D.
The solution was grasped for 7-12 hours. And finally freezes for about 27 days. Sometimes it is necessary to increase or reduce the setting time. Therefore, many people use accelerators and retarders for concrete. Such additives are sold in stores as a powder.
At long transport solution is added into a concrete retarder. For pouring monolithic plate without cracks and joints as well add hardening retarder.
The primary purpose of the plasticizer - improving the plasticity of the solution. Additives are resistant to frost cracking, increased density, strength (25%), the mobility, the flowability of the mixture. If you use plasticizers, it is possible to save on cement by 15%. The pouring can be carried out even at low temperatures. Best plasticizer C-3. This additive has better plasticizing effect.
Cheap plasticizers: PVA glue, lime or egg white.
There is a small minus plasticizers - reducing setting time. But this can be avoided by adding hardening accelerator. Therefore, builders often added immediately two additives (plasticizer and hardening accelerator). At temperatures below plus 1 degree plasticizers should be used with antifreeze.
Reinforcement for reinforcing concrete corrode. Is on sale special additives - corrosion inhibitors. From the surface of the metal inhibitors form a protective film. Introduction to additive solution allows concrete to harden even at low temperatures. Increases the mobility of the mixture is reduced and the diffusion permeability of concrete.
Air entraining agents
Additive creates tiny pores in the solution. These microscopic pores increase frost resistance concrete.
Less additive - reduction in strength. Therefore, many enhance frost resistance by reducing the water-cement ratio or fly ash is added to the solution.
The additive in the cement slurry increases the strength of the concrete. This composition hardens quickly, has good waterproofing. Frozen becomes concrete monolith.
Liquid glass treated surface of the concrete. This improves the fracture resistance from moisture. The small price of the material - is also a plus.
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