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Q: Which among the following is NOT a Bogue's compound present in cement?
  • A. 4 CaO.SiO₂.Fe2O₃
  • B. 3 CaO.Al₂O₃
  • C. 4 CaO.Al₂O₃.Fe₂O₃
  • D. 3 CaO.SiO₂
Correct Answer: Option A - Bogue's compound–When these raw materials are put in kiln, then it fuses and following four major compound are formed. 1. Tri-Calcium Silicate-(3CaO.SiO₂)–It is also known as (Alite) (C₃S). Average percentage 40% in cement compound 2. Tri-Calcium aluminate- (3CaO.Al₂O₃)–10%, it is responsible for flush set (C₃A)-Celite 3. Di-Calcium silicate-(2CaO.SiO₂)–32%, It is responsible for ultimate strength. Also known as Belite (C₂S) 4. Tetra-Calcium alumino ferrite-(4CaO.Al₂O₃.Fe₂O₃)– It is also known as Felite (C₄AF). Average 8% in cement Bougue compound. It is responsible for poorest cementing value.
A. Bogue's compound–When these raw materials are put in kiln, then it fuses and following four major compound are formed. 1. Tri-Calcium Silicate-(3CaO.SiO₂)–It is also known as (Alite) (C₃S). Average percentage 40% in cement compound 2. Tri-Calcium aluminate- (3CaO.Al₂O₃)–10%, it is responsible for flush set (C₃A)-Celite 3. Di-Calcium silicate-(2CaO.SiO₂)–32%, It is responsible for ultimate strength. Also known as Belite (C₂S) 4. Tetra-Calcium alumino ferrite-(4CaO.Al₂O₃.Fe₂O₃)– It is also known as Felite (C₄AF). Average 8% in cement Bougue compound. It is responsible for poorest cementing value.

Explanations:

Bogue's compound–When these raw materials are put in kiln, then it fuses and following four major compound are formed. 1. Tri-Calcium Silicate-(3CaO.SiO₂)–It is also known as (Alite) (C₃S). Average percentage 40% in cement compound 2. Tri-Calcium aluminate- (3CaO.Al₂O₃)–10%, it is responsible for flush set (C₃A)-Celite 3. Di-Calcium silicate-(2CaO.SiO₂)–32%, It is responsible for ultimate strength. Also known as Belite (C₂S) 4. Tetra-Calcium alumino ferrite-(4CaO.Al₂O₃.Fe₂O₃)– It is also known as Felite (C₄AF). Average 8% in cement Bougue compound. It is responsible for poorest cementing value.