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Question

Attrition test is used to measure the ________.

The correct answer is

Wear of stones

Attrition Test and Stone Wear

The attrition test is a standard test conducted on aggregates (like stones) used in road construction and other applications. The primary purpose of this test is to determine how well the material resists wear and abrasion from traffic and environmental factors over time.

When vehicles move over a road surface, the aggregate particles rub against each other and against the vehicle tires. This continuous rubbing causes the surface of the aggregate particles to wear away. The attrition test simulates this wearing action to evaluate the durability of the stone.

Different tests are used to measure various properties of stones used in construction:

  • The crushing value test measures the resistance of an aggregate to crushing under a gradually applied compressive load. It indicates the strength of the aggregate.

  • The texture of stones refers to the surface characteristics, which can affect bonding with binder materials.

  • The overall strength of stones can be assessed by various tests, including crushing strength, impact strength, and abrasion resistance.

Among the given options, the attrition test specifically measures the resistance of stones to wear, which is the gradual loss of material due to rubbing or abrasion.

Therefore, the attrition test is used to measure the wear of stones.

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Important Questions from Highway Materials and Maintenance

  1. The damaged material on the surface of road which is removed by rubbing or chipping action is called:

  2. The bitumen that is obtained as a residue during the distillation of a high-resin petroleum is called:

  3. The toughness property of coarse aggregates can be assessed by conducting which laboratory experiment?

  4. In the Aggregate impact value test, as per IS: 2386 (part IV), the test sample should pass and retain through which of the following sieve size?

  5. Flakiness index and Elongation index test is not applicable to aggregate sizes smaller than:

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