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Which compound gives the colour to the cement?(a) Lime(b) Silica(c) Iron Oxide(d) AluminaI had been asked this question during an internship interview.Query is from Types of Cement in portion Types of Cement and Testing of Cement of Concrete Technology

Answer»

Correct CHOICE is (c) Iron Oxide

The explanation is: Iron oxide PIGMENTS are in the FORM of particles RANGING approximately from 0.1 to 1.0 micron. The difference in color between one pigment and another is DUE to the shape and surface structure of the particle.



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