Question 16
The exposure of a material or body to a rapid change in temperature which may have a deleterious effect
Question 17
A group of impure magnesium silicate minerals that occur in a fiberous form is known as
Question 18
For fire clay and some high alumina materials, the most commonly used index of refractoriness is known as:
Question 19
A separation between adjoining parts of a refractory lining that allows small expansive movements, such as those caused by thermal change is known as
Question 20
API 936, the standard test method for the workability index of fire clay and high alumina plastic refractories are