Question
Download Solution PDFWhich of the following pairs with regards to coarse aggregate greater than 10 mm is NOT correctly matched?
(A) Crushing resistance → 10 per cent fine
(B) Toughness → Impact test
(C) Hardness → Abrasion set
(D) Specific gravity → Pycnometer
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The specific gravity test for coarse aggregate greater than 10 mm is not conducted using a pycnometer. Instead, a wire basket and water immersion method are used to determine the specific gravity of coarse aggregates as per IS: 2386 (Part 3)-1963.
Tests for aggregates are as follows:
|
Various Tests for Aggregates with IS codes: |
||
|
Property of aggregate |
Type of Test |
Test Method |
|
Crushing strength |
Crushing test |
IS : 2386 (part 4) -1963 |
| 10 percent fine test | BS 812 | |
|
Hardness |
Los Angeles abrasion test |
IS: 2386 (Part 5)-1963 |
|
Toughness |
Aggregate impact test |
IS: 2386 (Part 4)-1963 |
|
Durability |
Soundness test- accelerated durability test |
IS: 2386 (Part 5)-1963 |
|
Shape factors |
Shape test |
IS: 2386 (Part 1)-1963 |
|
Specific gravity and porosity |
Specific gravity test by pycnometer and water absorption test |
IS: 2386 (Part 3)-1963 |
|
Adhesion to bitumen |
Stripping value of aggregate |
IS: 6241-1971 |
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