TGPSC HMWSSB Manager 2015 Paper 2 · Question 20

Question 20 of the TSPSC Manager (Engineering), HMWSSB, 2015: Paper 2 (Civil Engineering) (1 November 2015). Try it first, then open the answer and explanation.

1. Manager 2015 Paper 2 (Civil) · Q20 · Transportation Engineering · Highway Engineering

   The hardness and toughness properties of a road aggregate will be obtained from

   1. Aggregate Impact Test
   2. Aggregate crushing test
   3. Los Angeles Abrasion Test
   4. Aggregate Shape test
   Show answer

   Answer: (3) Los Angeles Abrasion Test

   In the Los Angeles abrasion test the aggregate is tumbled with steel balls in a rotating drum, so it is subjected to abrasion (testing hardness) and impact (testing toughness) at the same time. The impact test measures toughness only and the crushing test measures strength.

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