Question
Download Solution PDFAs per IS 383:2016, the maximum crushing value of coarse aggregates used for runways and other wearing surfaces shall be _________ percentage.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Aggregate Crushing Value (ACV)
- This test is used to find the strength of the coarse aggregate and indicates the resistance to crushing under a gradually applied crushing load.
- It is measured as the percentage of aggregates passing through 2.36 mm IS sieve after the specimen subjected to a compressive load of 40 tonnes at the rate of 4 tonnes per minute and to the weight of aggregates taken.
- Lower the ACV ⇒ Less aggregates gets crushed during loading ⇒ Higher the resistance against crushing
- Aggregate crushing value should not be greater than 30 % for the surface course and 45 % for the base course
|
Type of surface |
Crushing Value |
|
Base Course |
Less than 45% |
|
Wearing Course |
Less than 30% |
Hence, As per IS:383 (2016), the maximum limit of aggregate crushing value for aggregates used in concrete for the wearing surfaces should be 30% by weight.
Last updated on May 28, 2025
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