Aggregate Test

Flakiness & Elongation Index

Flaky and elongated particles are considered undesirable for base coarse construction as they may cause weakness with possibilities of breaking down under heavy loads.

Due to high surface area to volume ratio, the flaky and elongated particles lower the workability of concrete mixes.

Aggregate Impact Value

Aggregates used in road write your paper in 3 hours construction should be strong enough to resist crushing under traffic. Toughness is the property of a material to resist impact. Due to traffic loads, the road stones are subjected to the pounding action or impact and there is possibility of stones breaking into smaller pieces. The road aggregates should therefore be tough enough to resist fracture under impact.

Grading Analysis

The sieve analysis determines the gradation (the distribution of aggregate particles, by size, within a given sample) in order to determine compliance with design, production control requirements, and verification specifications. Used in conjunction with other tests, the sieve analysis is a very good quality control and quality acceptance tool.

Specific Gravity & Water Absorption

The Specific Gravity of an Aggregate is considered to be a measure of strength and quality of the material. Aggregates having low specific gravity are generally weaker. So, This property helps in a general identification of quality of aggregates.

Water Absorption also gives clear idea on the internal structure of aggregate. Aggregates having high water absorption are more porous in nature and are generally unsuitable for construction.

While technical writing demands a great deal of detail and study, non-technical writing doesn’t.