NZQA registered unit standard
1509 version 6
Page 1 of 4
Title
Demonstrate knowledge of materials used in asphalt paving
production and construction
Level
4
Purpose
Credits
10
This unit standard is designed for people requiring technical
knowledge of asphalt mixes such as asphalt paving supervisors
and production plant operators.
People credited with this unit standard are able to describe:
materials used in asphalt paving mixes; types and properties of
asphalt mixes; and tests and sampling procedures for bitumen,
aggregates, and asphalt mixes.
Classification
Pavement Surfacing > Asphalt Surfacing
Available grade
Achieved
Explanatory notes
1
The following requirements apply to this unit standard, and must be complied with:
Chipsealing in New Zealand, New Zealand Transport Authority, available at
http://www.nzta.govt.nz/resources/chipsealing-new-zealand-manual/;
MS-2 Mix Design Methods, Asphalt Institute, available at
http://www.asphaltinstitute.org/store_category_browse.asp?ic_id=11;
New Zealand Transport Agency specifications at http://www.nzta.govt.nz/resources/:
NZTA M1: Specification for Roading Bitumens;
NZTA M10: Specification for Asphaltic Concrete;
NZTA P11: Specification for Open Graded Porous Asphalt;
NZTA P11 Notes: Notes to the Specification for Open Graded Porous Asphalt;
NZTA Q2: Specification for Quality Assurance for Hot Mix Asphalt;
Where specified in the contract documents, the following pilot specifications, or
confirmation of their currency, are available by contacting the Operations Manager,
New Zealand Transport Agency National Office, Telephone 04 894 6316;
NZTA P18P: Pilot Performance Based Specification for Hot Mix Asphalt.
Any requirements superseding any of the above will apply, pending the review of this
unit standard.
2
Assessment against this unit standard may be based on evidence from workplace
and/or provider contexts.
3
Definition
Bituminous material means bituminous liquids and materials containing bitumen that
are applied to pavement surfaces.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1509 version 6
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Describe materials used in asphalt paving mixes.
Evidence requirements
1.1
Bituminous materials are described in terms of source and properties in
accordance with Chipsealing in New Zealand and NZTA M1.
Range
1.2
Additives used in bituminous binders are described in terms of properties and
effect on the properties of asphalt mixes.
Range
1.3
aggregates – fine, coarse.
Aggregates are described in terms of source properties and processed
properties.
Range
1.5
includes but is not limited to – diluents, antistripping agents,
polymer modifiers, fibres.
Aggregates are described in terms of origin and supply.
Range
1.4
properties – penetration, viscosity, flash point.
aggregates – fine, coarse;
properties include but are not limited to – weathering resistance,
crushing resistance, polished stone value, particle size distribution,
shape, broken faces, sand equivalent, cleanness.
Fillers are described in terms of type and situations when they are required.
Range
may include but is not limited to – fly ash, lime, silt.
Outcome 2
Describe types and properties of asphalt mixes.
Evidence requirements
2.1
Types of dense asphaltic concrete mixes are described in accordance with
NZTA M10, and NZTA P18P.
Range
Infrastructure ITO
SSB Code 101813
wearing courses – maintenance patching, driveway, footpath,
surface levelling, sports surface, road, motorway, airport runway,
airport taxiway, container terminal, heavy industrial site;
structural courses – motorway, airport runway, airport taxiway,
container terminal, heavy industrial site;
evidence is required of at least four wearing courses and at least
two structural courses.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1509 version 6
Page 3 of 4
2.2
Types of open graded porous asphalt mixes are described in accordance with
NZTA P11.
2.3
Types of stone mastic asphalt mixes are described in accordance with NZTA
M10.
2.4
Special binder types are described.
Range
polymer-modified binder (bitumen or emulsion), cold mix binder.
2.5
The mechanical and volumetric properties of asphalt mixes are described in
terms of stability, flow, and air voids.
2.6
Mechanical and volumetric properties of asphalt mixes are explained in terms of
the importance of job mix formula.
2.7
Factors that affect the workability of asphalt mixes are described.
Range
2.8
factors – binder type and content; aggregate shape, broken faces,
particle size distribution.
Requirements for achieving effective compaction are described.
Range
requirements include but are not limited to – layer thickness, laying
temperature, in situ density, air voids.
Outcome 3
Describe tests and sampling procedures for bitumen, aggregates, and asphalt mixes.
Evidence requirements
3.1
Bitumen sampling and testing procedures are described in accordance with
contract specifications, NZTA M1, NZTA Q2, and company quality assurance
procedures.
3.2
Aggregate sampling and testing procedures are described in accordance with
contract specifications, NZTA M10, NZTA P11, NZTA Q2, and company quality
assurance procedures.
3.3
Asphalt sampling and testing procedures are described in accordance with
contract specifications, NZTA M10, and company quality assurance procedures.
Planned review date
Infrastructure ITO
SSB Code 101813
31 December 2016
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1509 version 6
Page 4 of 4
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
21 October 1994
31 December 2013
Review
2
4 October 1995
31 December 2013
Review
3
24 March 1998
31 December 2013
Revision
4
5 January 1999
31 December 2013
Review
5
27 October 2005
31 December 2013
Review
6
15 March 2012
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 (CMR). 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 Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016