Note for RNZ members: Further publications for downloading by members only can be found on the Members Only section of the website
Geologic Inventory of North Island Aggregate Resources: Influences on Engineering Materials Properties, by Prof. Philippa Black, Geology, School of the Environment, University of Auckland.
This report was prepared in conjunction with a working group consisting of members of Roading New Zealand’s Pavements Committee and representatives from the NZ Aggregates & Quarries Association. It was funded by the Foundation for Research Science and Technology (FRST) under the Optimising Physical Resource Use and Infrastructure Portfolio.
Prof. Black’s report discusses the major geological types of North Island aggregates, their locations, and the indicative ranges of their engineering properties. The findings will increase engineers’ knowledge and appreciation of the geological considerations of aggregate performance. The report includes a critical review of current test procedures.
As well as enabling the development of a consumer-oriented aggregate inventory, the knowledge gained through this project should have environmental benefits by strengthening interest in marginal aggregates, thereby conserving a non-renewable total aggregate resource. A second objective of the project is to determine the relationships between geological material properties and aggregate production properties.
A South Island inventory is underway and due for completion later this year.
The full first stage report, covering North Island resources, can be downloaded from here . . .
Handbooks & Guides
Bitumen Emulsion Guide
This guide provides information for specifiers, engineers, contractors and road network asset managers on the use of bituminous emulsions for chip seals. Download a copy here.
For more detailed guidance for practitioners covering the transfer, storage, handling and spraying of bituminous emulsion see the Bitumen Emulsion Users Guide (below).
Bitumen Emulsion Users Guide
Emulsifying a bituminous binder alters the viscosity to enable that binder to be pumped, sprayed and distributed onto a road surface in order for chip to adhere to it without using excessive heat. The procedures in this Users Guide are aimed at minimising the risk of problems commonly encountered when handling and spraying bitumen emulsions for chip sealing. They provide general guidance and do not cover every situation. Download a copy here.
Stepping Up to the Challenge of Efficiency Gains
As a member of NZTA's Road Maintenance Task Force, Roading NZ has committed to identifying opportunities for efficiencies in delivery of operations and services. This February 2012 leaflet provides four suggested steps to achieving the efficiencies required over the next ten years. Download here.
Manual Traffic Controllers Handbook (PDF 366kb) - download here.
Guidelines for Reversing Vehicles - Reversing mobile equipment of all sorts across all industries features heavily in workplace deaths and personnel injuries. These new guidelines, while aimed primarily at the roading and construction industry, can be applied to vehicle operations in all industry sectors. Download PDF here . . .
Temporary Traffic Management Training Handbook - produced by Opus International Consultants and including all changes and revisions to the CoP for Temporary Traffic Management. Download flyer here.
Best Practice for Use and Design of Truck Mounted Attenuators for New Zealand Roads (NZTA report).
Quality Assurance of Aggregates for Roads (Guidelines developed in conjunction with the Aggregate & Quarry Association of New Zealand and the NZTA) Download here.
Technical Notes & Data Sheets
Guidelines for Surfacing Treatment Selection - download here (10pp, 1.6MB)
Basecourse Construction Guidelines - download here (PDF 96 kb)
Proforma Technical Data Sheet: Bituminous Emulsion - download here (PDF 30 kb)
Proforma Technical Data Sheet: Polymer Modified Bitumen - download here (PDF 20 kb)
Technical Note No 001 describes the production of a flexible bound pavement layer by adding foamed bitumen during the reycling of in situ pavement materials. Can be used on basecourse or sub-base layers, new or old pavements. Download PDF here (9 pages, 450kb).
Technical Note No 002 - First Coat Sealing on a Stabilised Basecourse - gives guidance to practitioners in determining the amount of bitumen and diluents required for a seal design on all types of stabilised basecourse pavement surfaces. It also provides recommendations on industry best practice (additional to those in "Chipsealing in New Zealand". Click here to download (5 pages, 1MB)
Technical Note - Penetration and Viscosity Grading of Bitumen (Dec 2005) – download here (3 pages)
Selection Chart for Chipsealing Polymer Modified Binders (PDF) - download here.
Bitumen Burns Card – PDF version (updated April 2011) for use on noticeboards etc. – download here, PDF 380kb.
Version 1 of the NZ Supplement to AAPA's National Asphalt Specification (2004), dated July 2006 - here
RNZ9806 Slurry Seal Specification, June 2010 - download here