For further information contact pavements@nzta.govt.nz
Published: 2019
This Technical Advice Note provides guidance to assist maintenance contract managers to more easily respond to proposed works aimed at remedial works for areas of binder rise.
The standard interventions included within the guidance are proven road surfacing counter-measures that deliver beneficial outcomes by improving long-term surfacing performance
Treatment of flush and bleeding road surfaces
Published: 2012
The NZ Transport Agency has released a pilot version of the P25 Specification for calcined bauxite for trial and comment. Notes can also be found in the link above.
This is a performance-based specification for calcined bauxite applied with non-bituminous binder on an appropriate substrate. The expectation is that the surfacing (including the substrate) will have a life of 6 to 8 years with zero or minimal maintenance.
This specification applies where the substrate is provided by the principal or the contractor.
Pilot specification for calcined bauxite (P25)
Published: 2003
This specification and guidance notes set out requirements for improving the macrotexture (texture) of a pavement surface using high-pressure water or grooving treatments.
Improvement of macrotexture by use of high pressure water and grooving (P26)
Published: 1981
This test procedure covers the determination of the average texture depth of a paved surface using sand to give the volume of voids. The method is suitable for the measurement of surfaces with average texture depths greater than 0.45mm (less than 350mm sand circle diameter).
Texture by the sand circle method measurements (T3)
Published: 2013
This specification (2013) and guidance notes outline the process for identifying sites where treatment to improve skid resistance may be justified and the process to be followed. In addition, previous versions of the T10 specification (1997, 1998, 1999, 2002, 2010, 2012) and notes (1997, 1998, 1999, 2002 and 2012) are listed as historical references.
The 2013 specification includes prioritisation process for both investigation and programming of treatments at the exception report stage and once seasonally corrected data is available. These provide for optimum use of funds rather than setting a standard that may not be able to be achieved.
In T10 2013 table 3 minimum macrotexture requirements has been updated and a new section on the strategy for treatment of unstable chipseals has been included.
Skid resistance investigation and treatment selection (T10)
Published: 2011
This paper is for skid resistance practitioners to assist them with background to the T10 policy on curves.
A prioritisation scheme for the safety management of curves
Published: 2009
The 2008 SCRIM survey was an outlier. This memo describes actions to be taken that are unique to the 2008 survey.
Technical memoranda: 2008 Skid resistance survey data (TM5004)
Published: 2005
This memo advises macrotexture requirements for low speed areas and supersedes the two earlier Asset Management memos. It is to be read in conjunction with T/10 Skid resistance investigation and treatment selection (with notes), and the Exception report instructions (for skid resistance). It applies to maintenance of existing surfacings, resurfacing or new construction.
Technical memoranda:Macrotexture requirements for surfacings (TM5001, TM5002, TM5003)
