NZQA registered unit standard
28680 version 1
Page 1 of 3
Title
Demonstrate knowledge of materials used in bituminous surfacing
Level
4
Credits
6
Purpose
People credited with this unit standard are able to demonstrate
knowledge of materials used in bituminous surfacing.
Classification
Infrastructure Works > Generic Bituminous Surfacing
Available grade
Achieved
Explanatory notes
1
Competence in this unit standard requires knowledge of the current editions of the
following references:
NZS 4407:1991 Complete set: Methods of sampling and testing road aggregates,
Standards New Zealand, at http://www.standards.co.nz;
New Zealand Transport Agency specifications available at
http://www.nzta.govt.nz/resources/:
NZTA M1: Specification for Roading Bitumens;
NZTA M6: Specification for Sealing Chip;
NZTA M6 Notes: Notes on Specification for Sealing Chip;
NZTA M10: Specification for Dense Graded and Stone Mastic Asphalts;
NZTA M/10DP Amendment for use with Drum Mixing Plants
NZTA M10 Notes: Notes to the Specification for Dense Graded and Stone Mastic
Asphalts;
NZTA M13: Specification for Adhesion Agents;
NZTA M13 Notes: Notes to Specification for Adhesion Agents;
NZTA P11: Specification for Open Graded Porous Asphalt;
NZTA P11 Notes: Notes to the Specification for Open Graded Porous Asphalt;
RNZ 9803, Quality Assurance for Bituminous Binders: A Code of Practice developed
by Roading New Zealand, RNZ 9803:2013, Roading New Zealand; and
RNZ 9805, Quality Assurance of Aggregates for Roads RNZ 9805:2009, Roading
New Zealand, available from Civil Contractors New Zealand 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/.
2
Definitions
AGO means automotive gas oil.
ALD means average least dimension of sealing chip.
PSV means polished stone value.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28680 version 1
Page 2 of 3
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of materials used in bituminous surfacing.
Evidence requirements
1.1
Materials used in bituminous surfacing are identified and their properties and
sources are explained in accordance with Chipsealing in New Zealand, NZTA
M1, and NZTA M6.
Range
1.2
Materials used in bituminous surfacing are explained in terms of where and why
they are used.
Range
1.3
binders – cut back bitumen, emulsion, polymer modified bitumen,
polymer modified bituminous emulsion, latex modified emulsion.
Binders modified in bitumen sprayers are identified and described in terms of
how they are produced.
Range
1.6
mix types – asphalt, cold mix, warm mix, slurry, micro surfacing.
Static binder production plants are identified and described in terms of the types
of mix they produce.
Range
1.5
aggregate grades, sealing chip grades, bitumen grades, cut back
binders, emulsions, polymer modified binders, additives.
Bituminous mix production plants are identified and described in terms of the
types of mix they produce and how they produce them.
Range
1.4
aggregates, bitumen, binders, cutters and fluxes, additives;
aggregate types – sealing chips, crusher dust, filler, fly ash,
recycled, sand;
aggregate properties – ALD,PSV;
binders – cutback, emulsion, polymer modified, latex;
binder properties – grades, penetration, viscosity, flash point;
cutters and fluxes – kerosene, white spirits, AGO;
additives – lime, fibre, adhesion agents, cement.
cutting back, dosing with adhesion agents, adding latex.
Sampling and testing requirements for materials used in bituminous surfacings
are identified and described in accordance with NZS4407, NZTA M1, NZTA
M10, NZTA P11, RNZ 9803, and RNZ 9805.
Range
Infrastructure ITO
SSB Code 101813
aggregates, bituminous mixes, binders, additives.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
28680 version 1
Page 3 of 3
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.
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