NZQA registered unit standard
28693 draft version 1
Page 1 of 3
Title
Explain the design fundamentals of bituminous binders
Level
4
Credits
6
Purpose
People credited with this unit standard are able to explain the
design fundamentals of bituminous binders.
Classification
Infrastructure Works > Bitumen Product Manufacturing
Available grade
Achieved
Explanatory notes
Recommended reference material includes:
RNZ 9803, Quality Assurance for Bituminous Binders: A Code of Practice developed by
Roading New Zealand, RNZ 9803:2013, Roading New Zealand, available at
http://www.nzcontractors.co.nz;
NZTA M1: Specification for Roading Bitumens; New Zealand Transport Agency at
http://www.nzta.govt.nz/resources/;
Bitumen Emulsion Users Guide, Roading New Zealand, available at
http://www.nzcontractors.co.nz;
Chipsealing in New Zealand, New Zealand Transport Agency, available at
http://www.nzta.govt.nz/resources/chipsealing-new-zealand-manual/;
Outcomes and evidence requirements
Outcome 1
Explain the design fundamentals of bituminous binders.
Evidence requirements
1.1
The design of binders is explained in terms of developing binders that meet
technical specifications for the finished surfacing and site requirements.
Range
Infrastructure ITO
SSB Code 101813
technical specifications – viscosity, temperature, break rate;
site requirements – viscosity, cutback level, season.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1.2
Binder recipes are explained in terms of factors that affect the physical and
rheological properties of the binder, the reasons for using additives, and the
impacts of those additives on binder storage and handling requirements.
factors – chemistry, cutback, fluxing, pH, binder content, polymer
type and level, blending oil, break rate, cure rate, application rate,
seal type;
properties – penetration, viscosity, solubility, durability, hardening,
emulsification, adhesion, wetting ability;
additives – cutter, flux, solvent, adhesion agent, anti foaming
agent, emulsion, polymer, latex.
Range
1.3
Binder recipes are developed that will ensure the raw materials are fed into a
bituminous binder plant correctly to achieve product specifications.
binders – emulsion, polymer, polymer modified emulsion, cutback
bitumen, latex modified emulsion;
the following additives are to be included in any of the recipes –
flux, adhesion agent, anti-foaming agent;
correct – quality, bitumen grade, quantity, proportions,
temperature, flow rate.
Range
1.4
28693 draft version 1
Page 2 of 3
The design of binders is explained in terms of taking into account affects of
application on the quality of the seal.
affects of – application rate, timing, sequence, process,
temperature, viscosity, chemical reactions, seasonal use,
evaporation rate, curing, breaking, cooling, wetting, adhesion.
Range
Planned review date
31 December 2019
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
19 February 2015
N/A
Consent and Moderation Requirements (CMR) reference
0101
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28693 draft version 1
Page 3 of 3
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMRs). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Infrastructure ITO qualifications@infrastructureito.org.nz if you wish to
suggest changes to the content of this unit standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016