Question

For a good quality cement the ratio of silica and alumina is

Answer 1

Answer:

Answer: Explanation: The range of alumina in cement should be 3 to 8%. Silica is typically between 2.0 and 3.0.

Answer 2

Answer:

For a good quality cement, the ratio of silica and alumina is 2.5 to 4

Explanation:

In cement manufacturing, the materials used are

Silica ($Sio_2$) - (20 - 25)%

Alumina($Al_2o_3$) - (5-10)%

$ratio = Silica/Alumina$

let us take the minimal percentage of quantities of both the materials i.e. 20% of silica and 5% of alumina. Then,

the ratio of silica and alumina = 20/5 = 4

Now consider the maximum percentage of quantities of both the materials i.e. 25% of silica and 10% of alumina. Then,

the ratio of silica and alumina = 25/10 = 2.5

So, for a good quality cement, the ratio of silica and alumina is 2.5 to 4