VSM / Efficiency / Impermeability

Impermeability

Impermeability of concrete is an ability of concrete to resist pressurized water penetration. Penetration of aggressive liquids into the concrete has considerable effect on its durability. Concrete permeability determines the intensity of such penetration, as well as its frost resistance. In ferroconcretes penetration of moisture and air causes corrosion of steel reinforcement, resulting in volume gain, cracking and peeling of the protective concrete layer.

Introduction of VSM-structuring component into the cement system allows to change closed porosity parameters by increasing the concentration of small pores, reducing the distance between them, as well as the number and dimensions of capillary pores. Thus VSM significantly increases impermeability of concrete.

Besides, compaction of cement matrix contributes to reduction of harmful impact of wetting-drying cycles that aggravate corrosion.

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