The experts of geotechnical engineering Sydney wide agree that soil compaction is a part and parcel of geotechnical engineering. Soil compaction is a process where stress is applied to soil which then causes densification. This is because during this process air is eliminated from the pores between soil grains. It is usually done with heavy machinery that compresses the soil but passage of animal feet too can compress the soil. This article takes a look at some of the reasons why soil compaction is done.

Objective of compaction test

There are many reasons why people want to find geotechnical engineering Sydney professionals to do compacting tests for them. First is to determine the relationship between water content and density of the soil. Then also it is to establish the optimum water content as well as the corresponding maximum dry density of the soil. Additionally, it is done to be able to determine the connection between penetration resistance and water content for soil that is compacted. These are very important elements in any project that involves soil.


Due to different geographical locations, different parts of the earth’s surface have different terrain and therefore the characteristics of soil in these different places differ as well. It is for this reason that when a project is about to be undertaken in a certain area, tests have to be conducted first on the soil as sometimes the soil is not up to the standards to fit that particular project which may be very tricky. Usually, the soil that is used for building foundation, road and pavement, dam, hydro project and underground tunnels is compacted before actually the structure is erected. Luckily, soil compaction allows for the soil to be altered until it is suitable, thus no need to worry. Through compaction testing Sydney professionals undertake, characteristics of soil improve. It is done, therefore, to increase the strength of the soil, make the soil relatively incompressible, make it be stable, gain volume, and be durable as well as safe against deterioration. Additionally, through soil compaction, the proper permeability is achieved by reducing the voids ratio, thus making it difficult for water to be able to flow through the soil. Also, compaction helps to prevent the build up of large water pressures that can result to the soil liquefying during earthquakes.

Different methods for determination of adequate compaction

The main criteria that is used by experts of geotechnical engineering Sydney wide is to determine the intensity of the soil or the insitu density. The insitu density is first determined and then it’s compared with the readings in the laboratory. The main aim of this method usually is to determine the optimum water content at which the soil obtains the maximum density. The main test that’s usually used is called the proctor test and the standards compaction method.

Sydney compaction testing is a very important part of geotechnical engineering Sydney professionals undertake. Therefore, even if soil in a certain area is not suitable for construction, there is still hope for it. Visit for more.