Our pavement analytics team is focussed on advancing techniques for the structural analysis of pavements with ongoing R&D and implementation to achieve more efficient asset management

We help asset owners and managers obtain insight and manage their road networks using regional precedent performance analysis to provide them with forward work programmes that will reduce cost substantially, through the use of more rational and reliable performance models.

We apply a range of testing techniques to accurately evaluate pavement behaviour

We operate New Zealand’s largest non-destructive testing fleet, comprising:

  • Four Falling Weight Deflectometer’s (FWD) for gathering high-quality point data
  • Light Weight Deflectometer (a small portable version of the FWD)
  • Multi Function Vehicle (MFV) able to measure a number of pavement indices such as roughness and cracking
  • Multi-Speed Deflectometer (MSD) able to provide continuous measurement of pavement strength at variable speeds

Additionally, we offer interpretation of Traffic Speed Deflectometer (TSD) data collected at speeds of up to 80 km/h.

Our pavement engineers design and supervise construction for:

  • Private roads, subdivisions and heavy duty (airport/industrial) pavements
  • All pavement types from unbound through to stabilised pavements (foamed bitumen and cement/lime)
  • Clients including contractors, consultants, local authorities and government organisations

For verification and quality assurance, pavement deflection data can be collected before, during and following construction to ensure that each layer meets standards prior to placing the next layer.

Comparing repeat tests collected over the past several decades enables us to forecast how a given pavement will behave in the future.

  • Using in-house analysis methods and software calibrated to geological regions we can provide outputs tailored to a certain location, construction methodology and vehicle loading for more informed decision making
  • Network level priority ranking for rehabilitation (particularly beneficial for local authorities and councils)
  • Efficient and targeted rehabilitation design
  • Easy to understand outputs that can be readily utilised by asset managers
  • More reliable prediction of pavement life using the mechanistic Regional Precedent Performance (RPP) method

Our computer programmers develop in-house software for processing, interpreting, designing and presenting pavement information. So far, they have developed:

  • Regional Precedent Performance (RPP) mechanistic analysis method: a cutting-edge pavement life and critical distress mode prediction model for more detailed and advanced insight into a pavement's behavior
  • PaveState: a mobile phone app, to help our clients visualise and understand how their road networks are performing
  • Software for interpreting Traffic Speed Deflectometer (TSD) data that is recognised worldwide as leading edge technology for mechanistic prediction of pavement life

We continue to innovative new ways of testing, assessing and designing pavements.

  • The first to import and operate FWD test equipment on New Zealand roads in the early 1990s
  • In the development of a Multi-Speed Deflectometer (MSD)
  • Regular publisher of technical reports and government funded research projects