Nuclear Density and Moisture Compaction Testing (AS 1289)

What is Nuclear Density Testing?

Nuclear density testing is a field test used to measure soil compaction and moisture content.

It is one of the most common methods used to verify earthworks compaction.

The testing is performed in accordance with AS 1289.

Why Compaction Testing is Important

Compaction testing ensures soil is dense enough to support loads.

Poor compaction can cause:

• Foundation failure
  
  

• Settlement
  
  

• Cracking
  
  

Compaction testing ensures compliance with engineering specifications.

How Nuclear Density Testing Works

A nuclear density gauge is placed on the soil surface.

The gauge measures:

• Dry density
  
  

• Moisture content
  
  

Results are compared to laboratory compaction results to determine compliance.

Testing takes only a few minutes per location.

Field Testing vs Laboratory Testing

Field Testing

Performed on site using nuclear density gauge.

Measures:

• In-place density
  
  

• Moisture content
  
  

Laboratory Testing

Performed in a laboratory to determine:

• Maximum dry density
  
  

• Optimum moisture content
  
  

This is used as a reference for field compaction.

When Nuclear Density Testing is Required

Required for:

• House pads
  
  

• Roadworks
  
  

• Footings
  
  

• Civil construction
  
  

• Structural fill
  
  

Compaction Testing Adelaide

Compaction testing is essential to ensure earthworks meet required standards.

Professional testing ensures safe and compliant construction.