The GATE Grind

GATE 2020 CE (CE1) – Question 19

Highway Pavements · Highway materials and tests · 1 mark · Multiple choice

The Los Angeles test for stone aggregates examines ______.

  1. abrasion resistance
  2. crushing strength
  3. soundness
  4. specific gravity

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Show answer and explanation

Correct answer: (A) abrasion resistance

Explanation

The Los Angeles machine subjects aggregate to abrasion and impact with steel balls in a rotating drum. The percentage wear indicates resistance to abrasion. **Answer:A**. Crushing,soundness and specific gravity require different tests.