The type of cement used in the process of manufacturing a concrete solution is determined by the individual indicators of its scope. Most often, cement grade 500 is used. Lower quality grades are used to prepare concrete for surfaces that are not subjected to high loads.
Portland cement is used to improve adhesion between all components at both high and low temperatures. However, the minimum temperature for using a concrete solution is fifteen degrees. If concrete is still used at low temperature, then special substances in the form of additives and plasticizers should be present in its composition. A substance in the form of slag Portland cement is used if the work is carried out at temperatures above 25 degrees Celsius.
The amount of impurities in the cement substance should not exceed twenty percent. (more…)