Question

The property which defines the resistance of stone to rubbing and grinding action under the wheel of the traffic is called __________

(a) Abrasive resistance

(b) Crushing resistance

(c) Hardness

(d) Specific gravity

I had been asked this question in an interview.

This intriguing question comes from Rocks as Materials for Construction in division Engineering Properties of Rocks of Engineering Geology

Answer 1

Right choice is (c) Hardness

The best I can explain: Hardness is defined as the resistance of stone to rubbing and grinding action under the wheel of the traffic as also due to mutual attrition. It is known that the aggregates of roads and pavements undergo repeated shaking movements under the traffic load.