At Grace Coring we believe that all aspects of a Council’s key business can and will improve through innovation. The area for consideration in our service proposal is primarily related to the knowledge of existing road assets and available data. Not so much in terms of what is known but what is unknown.
The assertion we make is that by providing councils with a greater knowledge of road network pavement details and reliable information on structural profile of the roads, we would greatly improve on existing assumptions and replace them with the representative data. Existing historical data can be further examined and updated with more representative values. As a result, decision making would become better informed and scientifically supported.
The coring system that we've developed and adapted would take undisturbed samples at 1 m depth minimum and provide base layer thicknesses and basic material assessments, subgrade strength, as well as intact sample material for further geotechnical laboratory testing.
"Tim Fragar from Grace Coring approached Maitland City Council regarding an initiative for collecting road profile data quickly, with a low disturbance approach.
We recently utilised Grace Coring's technique to perform preliminary geotechnical investigations for our road rehabilitation program. Testing was conducted on 20 road segments, involving 98 cores being taken in one week. The dynamic cone penetrometer tests taken at each test location provided us with an indicative in situ subgrade CBR for each project.
The Grace Coring technique is best suited as an indicator of pavement profiles prior to planning bulk sampling activities. Maitland City Council were able to reduce the bulk sampling required and conduct targeted test pitting for UCS trials and soaked subgrade CBR testing.
In summary, we were impressed with Grace Coring's technique and the high quality service provided. I would recommend Grace Coring to any organisation, seeking fast, accurate and cost effective road pavement profile data."