GPR enables you to ‘see’ a clearer picture of what is happening beneath the surface - in essence it is an x-ray of the road. Whilst GPR has numerous applications, Fugro PMS focus on those applicable to the pavement industry.
GPR is an important tool that assists in valuing your pavement assets, selecting sections for treatment, calibrating other test data and obtaining increased value from your pavement management system. Fugro PMS (in conjunction with specialist a sister company – Fugro Aperio) will undertake the most appropriate GPR survey to suit your needs i.e. if your requirement is construction data the survey will be performed at traffic speed, however if it is condition data you require, then a slower more detailed survey is performed.
Construction Reporting
Currently Fugro PMS provide two levels of Construction Reporting:
1. SUMMARY CONSTRUCTION REPORTING FORMAT
Summary Construction reporting is designed to provide the Pavement Engineer with a broad picture of the subsurface enabling them to perform a series of actions based on knowledge rather than assumption. The Summary Construction format reports typical (not statistical) layer thickness values within construction segments, and acts as an additional tool for the Pavement Engineer to be used in conjunction with other survey data sets. |
Summary construction data can be used to:
- populate Pavement Management Systems
- provide additional information for Asset Valuation
- contribute to Transport Asset Management Plans and Maintenance Programmes
- direct coring programmes to typical and anomalous constructions
- obtain better value from coring by understanding the extent to which the core’s construction applies
- improve understanding of surface condition data such as rutting, longitudinal profile and cracking patterns
|
2. DETAILED CONSTRUCTION REPORTING FORMAT
Detailed Construction reporting is designed to provide the Pavement Engineer with maximum level of information from a traffic speed survey. Unlike summary construction reporting, detailed construction provides you with statistical layer thicknesses, typically every half a meter.
Many clients choose to have this information reported graphically as longitudinal sections which provide an instant understanding of the underlying construction. Data may also be reported in tabular format. Detailed Construction reporting is an economic and efficient way to build an understanding of the construction of a road network or section, which may address many of the summary requirements (above) as well as the following:
- design the appropriate treatment option
- calibrate FWD to improve pavement stiffness back-analysis
- get better value from coring by intelligent targeting
- improve understanding of surface condition data
|
Condition Data
In addition to construction information, GPR can provide information with regard to the condition of the pavement. By collecting data at a slower speed (walking pace), surveying multiple longitudinal and/or transverse profiles of the section, Fugro PMS can analyse the data and provide condition information such as potential voids and relative moisture content. This is achieved without the need for the high number of cores traditionally required in the absence of GPR.
This data is typically provided in plan view enabling the Pavement Engineer to identify areas of interest with minimal effort.
|
|
Consulting
Fugro PMS - Ground Penetrating Radar (GPR)