Chipseal Materials
Civil
A course by
WITT
An introductory course on the materials and NZTA specifications used in chipseals in New Zealand, designed for those new to chipseal construction or supervision.
In-person study
Face-to-face learning in a physical classroom setting
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.
Comprehend materials testing procedures
Understand the tests used for evaluating road surfacing materials and their significance in quality assessment.
What You're Signing Up For
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
What you need to know first
No prior detailed training in chipseal materials required
What sort of industry will this job lead to
Civil Engineering
Construction
Transportation Infrastructure
Future employment opportunities might be
Chipseal construction supervisor
Roading contractor
Road maintenance team member