"Core sampling and testing is the only reliable way to check the compliance of reinstatements on public highways and footways" "The SROH requires core sampling to be carried out by a UKAS accredited Laboratory"
Health and Safety requirements - to safeguard workmen and the general public
Compaction Testing measures and controls in-situ soil and material strength
Compaction Testing measures and controls in-situ soil and material strength
DCP test used on this new housing site to determine the strength of the underlying pavement layers.
The test involves raising and dropping the hammer to drive the cone on the lower shaft through the underlying pavement layers. After each hammer blow, the penetration of the cone is measured and recorded in stiffer soils, readings may be recorded after several hammer blows.
Test results taken in the field are put onto a spreadsheet to produce the DCP graph to determine the strength of the sub base and the structural properties of existing road pavements constructed of unbound materials. A CBR (California bearing ratio) is calculated.
It is commonly used to determine a (CBR) profile for pavement design.
The DPC is a simple, robust tool meaning it is easy to use, portable, and suitable to use in locations where access may be difficult.
Note, Whilst it is quick and easy the DCP test provides only an approximate assessment of CBR.
The Clegg Impact Soil Tester is a compact and reliable instrument for monitoring and controlling the quality of reinstatements while the work is in progress, avoiding the need for re-excavation if later tests were to indicate poor workmanship.
The Clegg test is a particularly useful tool to check the performance of trench filling operations and compaction levels of materials, this could result in penalties on undertakers who fail to meet the specified standards in the NRSWA and SROH.
We are completely impartial and our UKAS accreditation guarantees you receive accurate and factual results.
