Multiple choice

In Marshall testing of bituminous mixes, as the bitumen content increases, the flow value

  1. remains constant

  2. decreases first and then increases

  3. increases monotonically

  4. increases first and then decreases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the Marshall test, the flow value represents the deformation of the specimen at failure. As bitumen content increases, the mix becomes more plastic and deformable, leading to a monotonic increase in flow value.

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