Cement is the most expensive component of the concrete compound
The workability of the final concrete mix and the amount of cement used are two of the most important parameters in concrete production. These parameters, in turn, are mainly affected by the quality of sand used in the process.
The consistency of the sand can be a challenge when using natural or crushed sand that has not been produced in a well-controlled industrial process. Inconsistent sand quality leads to a higher safety margin, which results in an unnecessary increase in the amount of cement used. Cement is the most expensive component of the concrete compound, representing more than 50% of the cost of raw concrete, but less than 20% of the volume.
Characteristics of fine-sized aggregates in concrete are also crucial. Only a perfectly cubical and rounded shape of all fractions and their consistent quality can form an easily workable concrete mass. This allows the lowest possible amount of cement to be used in the final cement mix.
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