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OBJECTIVE
For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve.
- Aggregate impact value test gives an indication of aggregate’s toughness property (i.e. property of a material to resist impact)
- Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below.
- The test equipment and the test procedure are quite simple and it determines the resistance to impact of stone aggregates simulating field condition.
- This test can be performed even at construction site or at stone quary, as the apparatus is simple and portable.
- Aggregate impact value test also gives an indirect indication of the strength characteristics of aggregate.
- Aggregate impact value of a sample also depends on the shape factors such as flakiness index and elongation index of the aggregates.
- It has been found that for majority of aggregates, the aggregate crushing value and aggregate impact values are numerically similar within close limits.
- For deciding the suitability of soft aggregates in base course construction, aggregate impact test is commonly used.
- A modified impact test is also often carried out in the case of soft aggregates to find the wet impact value after soaking the test sample in water.
- Maximum allowable aggregate impact value of aggregate in different types of pavement material / layers.
Curtis Strite
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∙ 11y agowhat do you understand by dry and wet impact value of aggregate
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What do you understand by dry and wet impact value?
For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. 35 Weal for pavement surface course Aggregate impact value test gives an indication of aggregate’s toughness property (i.e. property of a material to resist impact) Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. The test equipment and the test procedure are quite simple and it determines the resistance to impact of stone aggregates simulating field condition. This test can be performed even at construction site or at stone quary, as the apparatus is simple and portable. Aggregate impact value test also gives an indirect indication of the strength characteristics of aggregate. Aggregate impact value of a sample also depends on the shape factors such as flakiness index and elongation index of the aggregates. It has been found that for majority of aggregates, the aggregate crushing value and aggregate impact values are numerically similar within close limits. For deciding the suitability of soft aggregates in base course construction, aggregate impact test is commonly used. A modified impact test is also often carried out in the case of soft aggregates to find the wet impact value after soaking the test sample in water. Maximum allowable aggregate impact value of aggregate in different types of pavement material / layers.
What is cohesion value of sand?
From a recent shear box test using a dry sand, the cohesion value was 2.49 Hope this helps!
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Dry gravel is lighter than wet gravel. So dry is better value.
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What do you understand by dry and wet impact value?
For determination of the aggregate impact value of coarse aggregate, which passes 12.5 mm. IS sieve and retained on 10 mm. IS sieve. 35 Weal for pavement surface course Aggregate impact value test gives an indication of aggregate’s toughness property (i.e. property of a material to resist impact) Aggregate impact values are used to classify the stone aggregates with respect to toughness property as given below. The test equipment and the test procedure are quite simple and it determines the resistance to impact of stone aggregates simulating field condition. This test can be performed even at construction site or at stone quary, as the apparatus is simple and portable. Aggregate impact value test also gives an indirect indication of the strength characteristics of aggregate. Aggregate impact value of a sample also depends on the shape factors such as flakiness index and elongation index of the aggregates. It has been found that for majority of aggregates, the aggregate crushing value and aggregate impact values are numerically similar within close limits. For deciding the suitability of soft aggregates in base course construction, aggregate impact test is commonly used. A modified impact test is also often carried out in the case of soft aggregates to find the wet impact value after soaking the test sample in water. Maximum allowable aggregate impact value of aggregate in different types of pavement material / layers.
What is cohesion value of sand?
From a recent shear box test using a dry sand, the cohesion value was 2.49 Hope this helps!
How would the determination of bulk specific gravity of fine aggregate (Saturated Surface Dry basis) affected by the 500gm sample being drier than the surface-dry condition Explain that the aggregate?
[object Object]
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1560 Kg/M3 not always the answer like this i have made experiment , and it show to me that the denisty is 14635 kg⁄m3 for dry ,,,, and 14867.7 kg⁄m3 for wet thanks,,,, eng.moh elnajjar
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