That manufacturers add to Portland cement
Water -cement ratio – the amount of water that cement is able to bind as a result of a chemical reaction and translate into chemically tied water.
To increase the frost resistance of cement-containing materials, special additives-plasticizers are used that reduce water consumption.
Supplements for cement
1. Active mineral additives: increase the water resistance of cement (diatomitis, domain slag, etc. D.)
2. Fillers: improve the composition of cement.
3. Technological: affect the timing of grasping, hardening, strength, regulate the water holding ability.
4. Special: reduce heat dissipation, give decorative properties, increase resistance to corrosion, etc. D.