S D Instrumentation

The Clegg Impact Soil Tester

The Clegg Impact Soil Tester manufactured by SDi provides a means for measuring and controlling soil strength and consolidation levels during trench re-instatement.

It is also used to confirm uniform compaction of over wide areas of ground, identifying poorly compacted areas and ineffective rolling of materials. The most popular Clegg instrument is one using a 4.5 Kg hammer.

Many different versions of the instrument are designed and manufactured by SDi. These include 0.5 Kg and 2.25 Kg types suitable for sports turfs and a special Golf Course Tester for testing fairways. The larger 10 Kg and 20 Kg Testers produced are supplied for testing harder materials and roadworks.

The Tester consists of a compaction hammer operating within a vertical guide tube. When the hammer is released from a fixed height it falls through the tube and strikes the surface under test, decelerating at a rate determined by the stiffness of the material within the region of impact. A precision accelerometer mounted on the hammer feeds its output to a hand held digital readout unit which registers the deceleration in units of Impact Value (IV). The IV indicates soil strength and shows good correlation with CBR test results.

The Clegg Impact Soil Tester is manufactured and marketed by SDi under an exclusive licence from Dr Baden Clegg Pty Ltd, the original Australian Inventors.

SDi and Quality

We provide a friendly, efficient and prompt service and all the services offered by the company are tailored to individual client requirements. S D Instrumentation Ltd as a company offers total commitment to meeting the expectations of our customers through providing both a cost effective and flexible service that is second to none.

Customer care is very important to us and a quality control system has been developed to ensure that the Client is provided with the best possible service and product at all times.

The Company has a policy of continual development and improvement. We are dedicated to the quality objectives as set out in a quality certification system capable of registration to BS EN ISO 9001:2008 status. The procedures enable us to carry out quality policies, practices and objectives.

Further Information

Test procedure with the 4.5 kg Clegg	20 Kg Clegg Hammer
Correlation with CBR	Downloads	Contact Us !

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