Page 49 - Unit 2: Pavement Material

Civil Engineering Department | DCC3113 : Highway & Traffic Engineering

AC Mix

i. Determine aggregate physical properties, i.e toughness and abrasion, durability and
abrasion, cleanliness and particle shape
ii. If the aggregate is acceptable according to the step no (i), then performed other

required tests : gradation, specific gravity and absorption
iii. Perform blending calculations to achieve the mix design gradation. Often, aggregates
from more than one source or stockpile are used to obtain the final aggregate
gradation used in a mix design. Trial blends of these different gradations are usually
calculated until an acceptable final mix design gradation is achieved

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Prepared by : SITI ZURAIFA BINTI MD SAH, zuraifa@pmu.edu.my