Assessing residual life to support maintenance prioritisation
Deflectograph (DFG) is a lorry-mounted automated deflection measuring system that is used to assess the structural condition of flexible pavements. Measurements of deflection are taken at approximately 4m intervals in both wheel-tracks while the machine is in motion. It works on the principle that as a loaded wheel passes over the pavement, the pavement deflects, and the size of the deflection is related to the strength of the pavement layers and subgrade.
This information can be integrated with details of the pavement construction and present and future traffic flows to determine the residual life of the pavement and the recommended overlay. Because the deflection is measured in the nearside and offside wheel tracks it is easy to determine if the whole width of the road requires strengthening or just repair of the (generally) nearside wheel track.
Deflectograph benefits and applications include:
- Assess the structural condition and remaining life of the pavement
- Identify pavement rehabilitation and overlay requirements
- Supports long-term asset management planning
- Evaluate pavement deterioration trends and conduct lifecycle modelling
- Provides an optimum solution for network-level surveys
Why choose XAIS-PTS?
At XAIS-PTS our team has a wealth of experience, and we deliver comprehensive pavement investigations across major infrastructure. We also deliver a wide variety of asset management surveys, software, professional services, programme development & design, materials testing, and certification services.
If you have any questions or queries about our services, please contact us today – our team will be more than happy to have a conversation with you regarding your project requirements!