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Title / Demonstrate knowledge of asphalt mix options, pavement pretreatments, and asphalt paving operations requirements
Level / 4 / Credits / 12
Purpose / This unit standard is designed for people requiring technical understanding of the practical aspects of asphalt paving construction.
People credited with this unit standard are able to: demonstrate knowledge of asphalt mix options, pavement pretreatment, and preparation requirements; demonstrate knowledge of asphalt paving construction requirements; and explain organisation of asphalt paving operations to meet specifications and operational efficiency.
Classification / Pavement Surfacing > Asphalt Surfacing
Available grade / Achieved
Explanatory notes
1 The following requirements apply to this unit standard, and must be complied with:
New Zealand Transport Agency specifications at http://www.nzta.govt.nz/resources/;
NZTA M10: Specification for Asphaltic Concrete;
NZTA M10 Notes: Notes to the Specification for Asphaltic Concrete;
NZTA P9: Specification for Construction of Asphaltic Concrete Paving;
NZTA P9P (Auckland): Specification for Construction of Asphaltic Concrete Paving;
NZTA P11: Specification for Open Graded Porous Asphalt;
NZTA P11 Notes: Notes to the Specification for Open Graded Porous 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
Company procedures refers to all documented policies, procedures and methodologies of the candidate’s employer at the time of training including but not limited to those relating to health, safety, environment, quality and operations.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of asphalt mix options, pavement pretreatment, and preparation requirements.
Evidence requirements
1.1 Types of asphalt mixes and their compositions are identified and their application is described in accordance with NZTA M10, NZTA P11, and contract specifications.
Range mixes – structural base, dense (including stone mastic asphalt), open-graded porous, patching, modified binder.
1.2 Pavement pretreatments are described in terms of pretreatment work necessary prior to resurfacing operations.
Range pretreatment work – water proofing, flushing prevention, deflection treatment;
surfaces – unbound basecourse, stabilised basecourse, new chipseal, slurry, asphalt, cement concrete, cracked surface, deformed surface.
1.3 Surface preparation requirements are described in accordance with NZTA P9, NZTA P11, NZTA P18P, and contract specifications.
Range tack coat, blinding course, membrane seal, scrub coat, levelling course, wearing course.
Outcome 2
Demonstrate knowledge of asphalt paving construction requirements.
Evidence requirements
2.1 Asphalt paving construction design requirements are identified in accordance with contract specifications and company procedures.
Range thickness, finished levels, density, permeability, shape, texture.
2.2 Site measurements are described in terms of meeting construction design.
Range mix temperature, thickness, finished levels, density, permeability, shape, texture.
2.3 Requirements for sampling and testing are described in accordance with contract specifications and company procedures.
2.4 Requirements for recording work are described in accordance with contract specifications and company quality assurance procedures.
Outcome 3
Explain organisation of asphalt paving operations to meet specifications and operational efficiency.
Evidence requirements
3.1 Operations are explained in accordance with NZTA P9, NZTA P11, and contract specifications.
Range laying by – paving machine, grader, hand.
3.2 Details of plant used to load, transport, and lay asphalt, and justifies the sequence for different operations are explained.
Range operations – place and screed by hand, lay with paving machine.
3.3 Methods for minimising segregation of the asphalt mixes during operations are explained.
Range operations – plant loadout, transfer to paving machine, paving machine feed, handwork.
3.4 Differences between the requirements of different jobs in terms of achieving specified compaction are explained.
Range requirements include but are not limited to – plant, sequence of operations;
jobs – maintenance patching, driveway, footpath, surface levelling, sports surface, road, motorway, airport runway, container terminal, heavy industrial site.
Planned review date / 31 December 2016Status 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 if you wish to suggest changes to the content of this unit standard.
Infrastructure ITOSSB Code 101813 / Ó New Zealand Qualifications Authority 2014