Pavement SURVEYS
FALLING WEIGHT DEFLECTOMETER
Our accredited Falling Weight Deflectometer (FWD) is a rapid, non-destructive method of assessing the structural integrity of any roads, runways, and other pavements types. Data from out Falling Weight Deflectometer can be used to determine the stiffness pavement structure, the degree of load transfer between adjacent sections and even the presence of voids beneath the surface.
Pavement Coring
Our highly skilled coring crew are set up to core through bituminous and cementitious layers of pavement, able to drill at varying diameters depending on requirements and specification, and to depths of 2m (upon special request). All coring is undertaken in accordance with BS EN 12697-27.
Whilst drilling, using our water suppressing systems, we strive to keep the locations as clean as possible for smooth and safe re-opening of highways.
Post core extraction, our crew is fully equipped to reinstate using HAPAS approved materials. Utilising the latest GPS technologies, we offer coordinates of each core taken to <0.5m accuracies.
Core samples are then logged in strict accordance with BS EN 12697-36:2003.
Dynamic Cone Penetrometer Testing
DCP testing is used to gain a greater understanding of the structural integrity of the pavement system. It determines the stability and support of subbase materials beneath bound pavement layers by measuring the penetration rate per each drop of the hammer.
Our crew can perform DCP testing at the base of cores, trial pits, in soft verges, or in soft central reservations in accordance with the Design Manual for Roads and Bridges CS 229 Data for pavement assessment.
Lab Testing
All extracted samples, where an asphalt material is present, will undergo PAK marker testing to detect the possible presence of tar.
For further testing we work closely with a network of UKAS accredited laboratories offering a variety of analysis options.
VISUAL CONDITION SURVEYS
Visual assessments of road surfaces are undertaken in accordance with the Design Manual for Roads and Bridges CS 229. These condition surveys can help determine areas of pavement that require more attention when planning more intrusive pavement investigations.
OTHER PAVEMENT SURVEYS
Additional services can include:
· Hand excavated trial pits
· Unbound Materials Sampling
· Light Weight Deflectometer Testing