Resources

Displaying 31 - 40 results of 233 for ""

Research Report 063 Review of instruments for measuring the texture profile of road surfaces

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

A complete road profile ranges from large scale topographic features to microscopic asperities on the surface of aggregates.

Research Report 061 Rolling resistance characteristics of New Zealand roads

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

New Zealand's road network uses pavement types of widely differing properties, ranging from very smooth asphaltic concrete to coarse chipseal surfaces having macrotexture levels not often found elsewhere in the world.

Research report 433 Abrasion resistance of aggregates in asphalt

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

The objective of this project was to investigate the durability and mechanical integrity of aggregate with a high polished stone value (>60) used in hot mix asphalt, particularly chips or coarse aggregates in stone-on-stone mixes such as stone mas…

Research Report 059 Development of the RAMM system: summary of responses to discussion document and recommendations arising

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

Responses to a discussion document on the development of the Road Assessment and Maintenance Management (RAMM) system, issued by Transit New Zealand in 1995, are summarised.

Research Report 043 Stabilisation of soils using randomly distributed fibre reinforcement: a review

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

A review of international literature covering the use of fibre reinforcement in cohesive and non-cohesive soils as a means of strengthening these materials was begun in 1992.

Research Report 564 Effects of water on chipseal and basecourse on high-volume roads

Published:
Category: Activity management , CAPTIF , Research programme , Research & reports | Audiences: Road traffic engineers & consultants, Roading contractors

The objectives of this study were to investigate the relationship between permeability of chipseals, waterfilm thickness, basecourse moisture sensitivity, heavy traffic volumes, and premature pavement failure following construction through the use of…

Research Report 499 Modelling of extreme traffic loading effects

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

In New Zealand, premature failure of low volume, low strength state highways and local authority roads has sometimes occurred due to significant changes in heavy commercial vehicle traffic.

Research Report 498 The design of stabilised pavements in New Zealand

Published:
Category: Activity management , CAPTIF , Research programme , Research & reports | Audience: General

Areas of New Zealand are running out of premium aggregates that meet the demanding specifications used in unbound granular road construction.

Research Report 491 Factors influencing the decision to rehabilitate a pavement

Published:
Category: Activity management , Research programme , Research & reports | Audience: General

The objective of this research, undertaken in 2008–11, was the development of an improved method of modelling the decision to rehabilitate a typical New Zealand thin-surfaced unbound granular pavement.