HEAVY COMPACTION TEST:

AS PER IS: 2720, (Part-Vlll)

Introduction:

Compaction: When Compaction of soil in the field is done using rolling machines, it is important to know O.M.C. and M.D.D. values. Standard Compaction test is used to determine in laboratory Optimum Moisture Contents (O.M.C.) and Maximum Dry Density (M.D.D.) of soils, which represents field samples. Compacted soils have increasing use in embankment of dams, highways, railways etc.

In recent years in order to meet current heavy traffic on runways and highways, heavy duty field compacting equipment has come into use and in view of reproducing greater densities, heavy compaction tests using heavy compaction apparatus have been developed.

General Description and Specifications: Instrument consists one each of:

• Compaction Mould: Made of Mild steel or gun metal, 150± 0.1  mm I.D. x 127.3± 0.1  mm height volume 2250 cc. complete with collar and base plate.
• Rammer: 4.89 kg x 450 mm controlled fall for heavy compaction test according to IS 2720 (Part-VIII). Weight of rammer is 4.89 Kg, diameter is 50 mm, chrome plated.