Tetracalcium aluminoferrite, in Bogue's compound notation, is written as:
A{'text': '4 CaO . Al2O3 . Fe2O3 (C4AF)', 'label': 'A'}
B{'text': '2 CaO . SiO2 (C2S abbr.)', 'label': 'B'}
C{'text': '3 CaO . Al2O3 (C3A abbr.)', 'label': 'C'}
D{'text': '3 CaO . SiO2 (C3S abbr.)', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': '4 CaO . Al2O3 . Fe2O3 (C4AF)', 'label': 'A'}
1. Table 1.2 in §1.4 names Tetracalcium Aluminoferrite as 4CaO.Al2O3.Fe2O3, abbreviated as C4AF.
2. The other three formulas correspond to C3S, C2S and C3A respectively.
_Source: IGNOU ET-522 Block-1 Unit-1 Cement, Table 1.2, §1.4, p. 7_
Related questions
In the Standard Consistency test described in §1.10, the percentage of water 'P' is definePer Table 1.5, the maximum permitted FINAL setting time of Ordinary Portland Cement is:Per Table 1.5, the soundness of Ordinary Portland Cement tested by the Le Chatelier methodThe minimum specific surface (by Blaine air permeability) prescribed for Ordinary PortlandOil well cement, per the source, is engineered to remain mobile and then harden under apprAir entraining cement is used principally to improve the resistance of concrete to:Super sulphate cement is produced by inter-grinding granulated blast furnace slag with gypThe cement most ideally suited for mass concrete construction such as dams, per the source