Question

good quality cement the ratio of silica to Alumina should be between​

Answer 1

Answer:

2.5 to 4

See NCERT class 11 Chemistry

chapter - S block

Answer 2

Answer:

For great quality cement, the ratio of Silica(SiO2) and alumina(Al2O3) have to be from 2.5 to 4.

Explanation:

Cement became first introduced in England in 1824 through Joseph Aspdin. It is likewise known as Portland cement as it resembles the natural limestone quarried withinside the Isle of Portland, England.

Cement is acquired through combining CaO with clay, which includes Silica, and SiO2 in conjunction with oxides of aluminum, iron, and magnesium.

For great quality cement, the ratio of Silica (SiO2) to Alumina (Al2O3) has to be between 2.5 to 4, and the ratio of lime(CaO) to the Oxides of Silicone (SiO2), aluminum (Al2O3), and iron (Fe2O3) have to be near 2.