___________________ is the measure of the strength of refractory under the combined effect of temperature & load ?
Correct answer: B. RUL
- A. Porosity
- B. RUL
- C. Specific gravity
- D. Thermal conductivity
Explanation
Refractoriness under load, or RUL, measures how well a refractory retains strength and resists deformation under simultaneous temperature and mechanical load. Porosity and thermal conductivity describe physical or heat-transfer properties, not load strength directly.
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