COMPACTION OF SOIL PROCTOR’S TEST
PREPARED BY:
NAME
MATRIX NO.
MOHAMMAD ARZWAN BIN ABDUL RAHMAN
2012235468
MUHAMAD HAMIDDIN BIN MD KOMA
2012494124
MUHAMMAD FAISAL BIN MOHD RASHID
2012899292
PREPARED FOR:
DR. MAZIDAH BINTI MUKRI
INTRODUCTION
Compaction is the process of densification of soil by reducing air voids.The degree of compaction of a given soil is measured in terms of its dry density.The dry density is maximum at the optimum water content.A curve is drawn between the water content and the dry density to obtain the maximum dry density and the optimum water content.
Dry density = Where : M = total mass of the soil V = volume of soil W = water content
OBJECTIVE
To determine the compaction characteristics of a soil specimen by Proctor’s Test.
APPARATUS
Compaction mould with the capacity 1000 ml , rammer (mass 2.6 kg) , detachable base plate , collar (60 mm high) , oven , weighing balance , large mixing pan ,strainght edge , measuring cylinder and sample extruder.
PROCEDURE
1. The 20 kg of representative air dried soil sample passing on 37.5 mm and 20 mm sieve were taken.
2. Adequate water on soil sample were added to bring its water content about 7% or less than the estimated optimum moisture content.Leaved it for some time.
3. The mould and the plate were cleaned.
4. The mass of the mould with the base plate were taken.
5. The grease was apllied on inside of the mould.
6. The collar was attached to the mould.
7. The matured soil was remixed.2 or 3 kg soil were taken and compacted it in the mouldin three equal layer using the rammer at 27 blows per layer.
8. The collar was removed.
9. The excess soil was cutted with the straight edge.
10. The mould was cleaned from out side and it weight was recorded.
11. The sample was taken from the mould.keep a representive soil