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Aggregate Crushing Value Apparatus VSLIC-A113

short info

The Aggregate Crushing Value (ACV) test set provides a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load.

Standard

IS: 2386-1963 (Part IV)

Model

VSLIC-A113

Origin

Indian

Make/ OEM

VERTEX

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  • Description

  • SPECIFICATIONS

  • FEATURES

  • VIDEO
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    WORKING PRINCIPAL

OVERVIEW

The ‘aggregate crushing value test ` gives a relative measure of the resistance of an aggregate to crushing under a gradually applied compressive load. Aggregate crushing value is defined as the percentage by weight of the crushed (or finer) material obtained when the test aggregates are subjected to a specified load under standardized conditions, and the strength of the aggregate used in road construction is expressed by numerical index. Aggregates with lower crushing value show a lower crushed fraction under load and would give a longer service life to the road and hence a more economical performance. If we used a weaker would get crushed under traffic loads, would produce smaller pieces not coated with a binder, and these would be easily displaced or loosened out resulting in loss of the surface/layer. Due to this reason, the aggregates used in road construction must be strong enough to withstand crushing under roller and traffic.


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SPECIFICATIONS

Each set consists of a steel cylinder, plunger, base plate, cylindrical measure, and tamping rod. All parts of the apparatus are powder coated or galvanized steel, heat-treated, and ground before manufacturing to make it durable and reliable.

FEATURES

The apparatus for the standard aggregate crushing test as per IS: 2386-1963 (Part IV) consist of the following:

  • The test mould-a 15.2 cm diameter open-ended steel cylinder with square base plate; plunger having a piston of diameter 15 cm, a rod could be inserted for lifting or placing the plunger in the cylinder with a provided hole across the stem of the plunger.,/li>
  • A straight metal tamping rod of circular cross-section 16mm in diameter and 45 to 60 cm long, rounded at one end.
  • A balance of capacity 5 kg, readable and accurate up to 1 gm.
  • IS sieve of sizes 12.5mm, 10mm, 2.36mm.
  • A compression testing machine capable of applying load up to 40 tonnes at a uniform rate of 4 tonnes per minute.
  • A cylinder measure having an internal diameter of 11.5 cm and height 18 cm.

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