Checklist – CAC048M
Plant Mixed Stabilised Pavements using Cement (MRTS08)
Contractor
Date
Review No.
Contract No.
Project No.
Project Name
Reference
Requirements
Addressed
Materials
MRTS08
Cl 6
MRTS08.1
Cl 2
MRTS08.1
Cl 2
MRTS05
Cl 8.2
Are the material stockpiles in accordance with the
specification requirements?

Stockpile sites approved by the administrator

Stockpiles a minimum of 200 m from residences

Individual stockpiles are clearly identified
Does the unbound pavement material meet the
requirements of the Specification?

Pavement material Type 2.1

B or B Grading
Does the granular material meet the requirements of
MRTS05 Unbound Pavements?

MRTS08
Cl 6
MRTS08.1
Cl 7
The Contractor has demonstrated the material
complies Hold Point 4
Is the stabilising agent in accordance with the
Specification?

GB Cement blend 25% flyash and 75% cement
Comments/Observations
Checklist CAC048M, Plant Mixed Stabilised Pavements using Cement
Reference
MRTS08.1
Cl 7
Requirements
Addressed
Comments/Observations
Has preliminary testing of pavement material been
completed?

UCS of 1.0–1.5 MPa

Shrinkage does not exceed 500 microstrains at
20 days
Construction (Preliminary
MRTS08
Cl 8
Have the following preliminary activities been
completed?

Permission to proceed granted to cover underlaying
layer Hold Point 2

Appropriate plant available and in use on the site
Construction (Mixing Equipment)
MRTS08
Cl 8
Does the pugmill meet the Specification requirements?

Pugmill

Storage silo

Facilities for storing water and admixtures

Calibrated and controlled metering systems for
stabilising agent, admixtures and water

Necessary conveyors, power supply and controls

Control system with variable feed for each
constituent

Displays to monitor each constituent

Pugmill is capable of producing complying material

Pugmill is capable of uniformly incorporating each
constituent

Pugmill is capable of producing a consistent material
free from segregation
Contract Administration System, Transport and Main Roads, April 2015
2
Checklist CAC048M, Plant Mixed Stabilised Pavements using Cement
Reference
Requirements
Addressed

Pugmill is capable of 150 t/hr or the Contractor’s
placing rate whichever is greater

Pugmill is capable of continuously meeting the
Contractor’s placing rate

Pugmill is capable maintaining a consistent
proportion of stabilising agent (maximum deviation
0.3%)

The pugmill has a waterproof/watertight mixture
storage bin

Calibration checks recorded and reported to the
Administrator
Comments/Observations
Construction (Delivery Equipment)
MRTS08
Cl 8
Does the delivery equipment meet the Specification
requirements?

Open body trucks

Truck bodies are covered

Trucks discharge without segregation

Trucks equipped to discharge without spillage

Sufficient trucks available to match the Contractor’s
placing rate
Construction (Paving Equipment)
MRTS08
Cl 8
Does the equipment for water curing meet the
Specification requirements?

Purpose-built self-propelled machine

Spreads mixture to required uncompacted layer
thickness, width seven shape in one pass

Does not segregate the mixture
Contract Administration System, Transport and Main Roads, April 2015
3
Checklist CAC048M, Plant Mixed Stabilised Pavements using Cement
Reference
Requirements
Addressed
Comments/Observations
Construction (Water Curing)
MRTS08
Cl 8
MRTS08
Cl 8
Does the equipment for water curing meet the
specification requirements?

Capacity of at least 6000 lts

Discharges a fine even mist

No slurrying, pavement instability, erosion and
leaching of stabilising agent.
Do the water curing operations fulfil the requirements of
the Specifications?

The surface is maintained continuously damp

Water curing continues until the layer is covered or
sealed
Construction (Preparation of the layer edges and surfaces)
MRTS08
Cl 8
Does the equipment for preparation of the layer edges
and surfaces meet the Specification requirements?

Edges cut cleanly and vertical

All cut material removed
Construction (Allowable working time)
MRTS08
Cl 8
Are the works completed in the allowable working time?

Material mixed, compacted and trimmed within
two hours
Construction (Checks of Application Rates)
MRTS08
Cl 8
Are checks of the application of stabilising agent being
performed in accordance with the Specification
requirements?

The application of stabilising agent shall be checked
and recorded every hour as kgs/t pavement material
Contract Administration System, Transport and Main Roads, April 2015
4
Checklist CAC048M, Plant Mixed Stabilised Pavements using Cement
Reference
MRTS08
Cl 8
Requirements
Addressed
Comments/Observations
Are checks of the application of admixture being
performed in accordance with the Specification
requirements?

Actual admixture content within +/- 10% of approved
content
Construction (Joints)
MRTS08
Cl 8
Are joints being constructed in accordance with the
requirements of the Specification?

No longitudinal joints in traffic wheel paths

Longitudinal joint offset a minimum of 150 mm from
under laying longitudinal joint

The outside 300 mm of the first run is left
uncompacted in fresh joints (joints within two hours
of mixing)

Cut joints are a minimum 150 mm or to compacted
material

Cut back edges have a cement slurry applied
immediate before placing the adjoining layer

Slurry place at 2 kg/m²

Water/cement ratio of slurry is between 0.6 and 0.7

Additional slurry applied if slurry sets
Construction (Bitumen Curing Coat)
MRTS08
Cl 8
Do the bitumen curing operations fulfil the requirements
of the specifications?

Bitumen curing coat applied within seven days

Water curing maintained from time of compaction
until placing bitumen

Cover material is spread prior to trafficking
Contract Administration System, Transport and Main Roads, April 2015
5
Checklist CAC048M, Plant Mixed Stabilised Pavements using Cement
Reference
Requirements
Addressed
Comments/Observations
Construction (General)
MRTS08
Cl 8
MRTS08
Cl 8
Are the climatic conditions suitable?

No rain or rainfall imminent

Conditions do not pose a nuisance or danger to
people, property or the environment

Stockpile temperature is 10°C or above

Air temperature does not exceed 40°C
Has the Contractor’s work operations met the
requirements of the Specification?

Existing surface swept clean

No dust or loose particles

Cement slurry applied immediate before placing the
adjoining layer

Layer thickness 100–250 mm

Slurry place at 2 kg/m²

Water/cement ratio of slurry is between 0.6 and 0.7

Additional slurry applied if slurry sets

Moisture content of mixture within +/- 1% of optimum

No segregation evident
Standard of Product
MRTS08
Cl 8
Has the construction met with the requirements of the
specification?

Horizontal +/- 50 mm except for edges – 50 mm +
250 mm and adjustments to align to existing
pavement or structures

Vertical +/- 15 mm

Maximum 5 mm deviation from 3 m straight edge
Contract Administration System, Transport and Main Roads, April 2015
6
Checklist CAC048M, Plant Mixed Stabilised Pavements using Cement
Reference
Requirements

Cross not more than 0.5%

Surface evenness 50 counts/km

The CV of the RDD is 100%

No segregation evident

No visible movement in any layer
Addressed
Comments/Observations
Curing Coat
MRTS08.1
Cl 8
Has the Contractor scheduled Prime and Seal as per the
contract

Prime AMCOO has been scheduled

Seal Class PMB (S4.5S) has been scheduled

10 mm cover material on site
*Key
C = Conformance
NFV = Not Fully Verified
N/A = Not Applicable
IP = Improvement
NC = Non-Conformance
Reviewed by:
Name
Contract Administration System, Transport and Main Roads, April 2015
Signature
Date
7