Aggregate Impact value
The aggregate impact value test is an important test of aggregates. It is done to obtain the resistance and impact of aggregates (stones). In this test a machine is used, which is called impact testing machine.
What are the Importance of Aggregate Impact Value
The aggregates have sufficient toughness to resist their disintegration due to impact. This property is measured by aggregate impact value test. So that aggregate impact value test is used to determine the relative measure of the resistance of aggregate to sudden shock or impact, which in some aggregate differs from its resistance to a slowly applies compressive load.
What are the Advantages of Aggregate Impact Test
The advantages of aggregates impact value test are that the apparatus and procedure of the test are simple. With this test, we can obtain the resistance and impact of aggregates (stones) even in field condition. The test can be done in a short period whether it is at construction site
What is the Principle of Impact Value
- Impact value test determines the amount of energy absorbed by a material during fracture. This absorbed energy gives a measure of toughness of a given material and acts as a tool to study temperature-dependent brittle-ductile transition. It is used to determine whether the material is brittle or ductile in nature.
Impact value of aggregate testing Apparatus
Aggregate Impact value formula
Aggregate Impact value test is code book free download
Aggregate Impact value test limits
Sl. No. | Type of Pavement | Aggregate Impact Value Should Not More Than |
1. | Wearing Course | 30 |
a) | Bituminous surface dressing | |
b) | Penetration macadam | |
c) | Bituminous carpet concrete | |
d) | Cement concrete | |
2. | Bitumen bound macadam base course | 35 |
3. | WBM base course with bitumen surfacing | 40 |
4. | Cement concrete base course | 45 |