Question:
Refractoriness under load test is used to determine
Refractoriness under load test is used to determine
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RUL test gives the softening or collapse temperature of a refractory under load.
Updated On: May 7, 2026
- Thermal conductivity
- The temperature at which a brick collapse under load
- Resistance to chemical corrosion
- Abrasion resistance
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The Correct Option is B
Solution and Explanation
Concept:
Refractoriness under load, commonly called RUL, measures the ability of a refractory material to resist deformation under load at high temperature.
Step 1: A refractory brick in a furnace is exposed to high temperature.
Step 2: It also carries load due to furnace structure or other bricks.
Step 3: At high temperature, the brick may soften and deform.
Step 4: RUL test determines the temperature at which the brick starts to deform or collapse under a specified load. Therefore, the correct answer is: \[ \boxed{\text{The temperature at which a brick collapse under load}} \]
Step 1: A refractory brick in a furnace is exposed to high temperature.
Step 2: It also carries load due to furnace structure or other bricks.
Step 3: At high temperature, the brick may soften and deform.
Step 4: RUL test determines the temperature at which the brick starts to deform or collapse under a specified load. Therefore, the correct answer is: \[ \boxed{\text{The temperature at which a brick collapse under load}} \]
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