Resources

Displaying 51 - 60 results of 233 for ""

Research Report 502 Assessing pre-tensioned reinforcement corrosion within the New Zealand concrete bridge stock

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

Precast pre-tensioned concrete bridge construction became common in New Zealand in the 1950s and a large number of pre-tensioned concrete bridges were constructed between 1953 and 1980.

Research Report 050 Antioxidents for roading bitumen

Published:
Category: Activity management , Research programme , Research & reports | Audiences: General, Roading contractors

The technical literature up to 1994 dealing with the use of antioxidants to decrease the rate of age hardening in bitumen used for roading chipseals was reviewed.

Research Report 361 Review of Australian standard AS 5100 bridge design with a view to adoption

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

The objective of this project was to investigate the practicality of adopting the AS 5100 bridge design standard for New Zealand.

Research Report 358 Developing and trialling a climate based section guideline for chip seal binders

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

In recent years, the standard practice in New Zealand regarding binder selection for state highways has been to use harder penetration grade binders and reduced diluents, after some research indicated that the use of harder binders slowed the onset o…

Research Report 424 Design moisture condition guidelines for pavement design and material assessment

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

A pavement design model developed in the USA is used to estimate the equilibrium degree of saturation in pavement subgrade and basecourse materials.

Research Report 626 The long-term acoustic performance of New Zealand standard porous asphalt

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

Research was commissioned to investigate the long-term acoustic performance of New Zealand standard porous asphalt made to TNZ P/11 Specification for open graded porous asphalt (OGPA).

Research Report 042 The bonding of new to old concrete bridge decks as affected by vehicular traffic

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

This project, undertaken in 1992, simulated the situation when a bridge is widened with a new concrete extension and then, after a delay period, traffic continues to use the existing old concrete bridge while the extension is curing.