PTS have 6 dedicated coring crews equipped with Xcalibre Neptune high mast trailer mounted coring rigs.
The rigs are capable of drilling to 1m in depth through bituminous and cementitious layers with core barrel diameters of 100, 150 and 200mm available to cater for all testing and logging requirements. (300mm possible by special arrangement). The rigs are fully self-contained with their own water supply and power hydraulic hammers/breakers for necessary reinstatement.(Weather, closure and material conditions permitting) Core locations are recorded using Marker Post and/or Chart Sections as well as the latest GPS techniques.
Once drilled the cores are returned to the Pavement Laboratory at Preston, where they are logged using our own in-house test method along with a purpose designed database and software that complements any data obtained by Ground Penetrating Radar (GPR). These in-house methods take the methodology set out in the Design Manual for Roads and Bridges Volume 7, Part 3, Section 3, HD30/99 “Annex A Test Methods at investigation sites” and add additional treatment and detail to improve the quality of information provided in the core logs, taking the traditional core logging methods to the next level. The core log reports can include UKPMS layer codes at the client’s request.