Page 43 - Lecture Notes DCC3113
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Figure 3-8: Aggregate Crushing Value Equipment
ii. Ten Percent Fine Value
To determine the load needs to crush the aggregate with 10 percent fine. Sample is
prepared similar to ACV test, then apply the expected load that could produce ten percent
fine. Calculate the exact percentage of fine and calculate the exact load using the following
formula provided the fine is the range of 7.5 to 12.5%
Where : f = Load applied
y = Percent Crushed
iii. Aggregate Impact Value
To determine percent crush due to impact load. Size used is aggregate passing 14 mm
retained 10 mm. Aggregate is placed in the mould and compacted in a mould with 25 times
of rodding. Then, it is subjected to 15 times of impact loading. After impact, calculate the
weight crushed using 2.36 mm sieve size and determine the AIV :
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