Chipseal Materials
An introductory course on the materials and NZTA specifications used in chipseals in New Zealand, designed for those new to chipseal construction or supervision.
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Core skills this course teaches
Understand chipseal binder and aggregate properties
Recognise the basic properties of binders and aggregates used in chipseal construction.
Interpret key NZTA specifications
Understand the requirements of NZTA M01 (bitumen) and M06 (aggregates) specifications for chipseal materials.
About This Course
This course introduces participants to the key materials and specifications used in New Zealand chipseal construction. Aimed at individuals who have not previously received formal training in this area, the course covers basic properties, performance, and NZTA requirements for binders and aggregates. Topics include bituminous binders, additives, mineral aggregates, and how their properties impact chipseal performance. Essential for those supervising chipseal works or seeking to further their understanding ahead of chipseal design courses.
Course Content
- Bitumen production and NZTA M01 specification
- Bitumen Performance Grade specification developments
- Penetration, viscosity, flash point, durability, DSR testing
- Pumping, mixing, and spraying temperatures
- Additives: cutters, fluxes, adhesion agents, antifoam, polymers, natural rubber, fibres
- Water stripping, active adhesion, vialit test
- Aggregate precoating, primers (bitumen and emulsion)
- Bitumen emulsions: classification and on-road behaviour
- Sampling hot bitumen and emulsion
- Production and source tests for sealing chip, including NZTA M06 specification
- ALD chip shape concepts, sieve analysis and grading, sampling aggregates
- Application of chip
Entry Requirements
No prior detailed training in chipseal materials required
Build towards these roles
Chipseal construction supervisorRoading contractorRoad maintenance team memberChipseal designer (after further study)
Build skills in these industries
Civil EngineeringConstructionTransportation Infrastructure
