AGGREGATE IMPACT VALUE (AIV) (R220)

Category: Aggregate

Product Code: R220

Category: AGGREGATE

Sub-Category: PHYSICAL PROPERTIES

 

  • Used to determine the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.
  • Two procedures are described, one in which the aggregate is tested in a dry condition, and the other in a soaked condition.
  • The methods are applicable to aggregates passing at 14.00 mm test sieve and retained on a 10.0 mm test sieve.
  • Aggregate sizes larger than 14.00 mm are not appropriate to the aggregate impact value test.
  • A test specimen is compacted, in a standardized manner, into an open steel cup. The specimen is then subjected to a number of standard impacts from a dropping weight.
  • This action breaks the aggregate to a degree which is dependent on the impact resistance of the material. This degree is assessed by a sieving test on the impacted specimen and is taken as the aggregate impact value (AIV).
  • The set is made of a heavy-duty, corrosion-resistant steel to resist the impacts during the test.

STANDARDS
BS 812-112

EQUIPPED WITH

  • Blow counter
  • Hammer release mechanism

SUPPLIED WITH

  • Cylindrical measure (Ø 75 mm x 50 mm)
  • Tamping Rod

ORDERING INFORMATION

Code Item
R 220 X00B H AGGREGATE IMPACT VALUE (AIV)

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