Stockpile & Aggregate

Spray Sealing Contract Works

Principal Contractor:

Sub-contractor:

Design Parameters:

Treatment

Nominal Aggregate Size

Binder Type:

Additivies: (Please note type and %)

Stockpile Site:

Is stockpile material covered?

Is aggregate dusty or wet?

Preliminary comments:

Pre-start Inspection

Pre-Start Inspection
WH&S Requirements:

All personnel at site have been inducted and signed on?

Records of toolbox talks available?

All personnel are equipped with appropriate PPE?

First Aid Kits and Nominated First Aiders are available on site?

Fire extinguishers readily available on site?

Spill kits available on site?

Traffic Management Measures:

Is provision for the following adequate:

▶ Signage

▶ Traffic Cones

▶ Flag Persons

Comments (i.e. single lane, contraflow, closed with detours)

Surface Preparation:

Base Condition (Soft Spots)

Has existing surface been broomed?

▶ Surface has been swept no less than 300mm beyond the edge of the area to be sprayed

Is surface agreed ready and fit to seal?

Pavement Surface Temperature:
Pavement Temperature is above minimum level for 1 hour prior to sealing.

▶ Must be no less then 15ºC for cutback bitumen

▶ Must be no less then 20ºC for PMB
Sampling of Bitumen:

No. of samples:

Sampled by:

Point of sampling:

Sample received by:

Pre-start comments:

Spraying & Covering

Spraying and Covering
Binder:

Temperature and heating conforms

Binder temperature is above the minimum level for 1 hour prior to sealing.

▶ C170 - 160ºC to 190ºC

▶ Multigrade C600 - 160ºC to 190ºC

▶ PMB - 100ºC to 240ºC

Are the binder application rates within tolerences?

Have longitudinal spray runs been overlapped by no less than 50mm?

Have protective strips of paper been placed at the end of sealing works?

Application of cover material

Mat test completed (Q711A - 1996)

Test 1:

Mass of canvas mat & aggregate - m1 (kg):

Mass of canvas mat - m2 (kg):

Area of mat - nearest 0.002m2 (m2):

Spread rate - R1 (kg/m2): R1 = (m1 - m2) / Area

Loose unit mass of aggregate - DI (t/m3):

Spread rate - R2 (m2/m3): R2 = (1000*DI) / R1

Test 2:

Mass of canvas mat & aggregate - m1 (kg):

Mass of canvas mat - m2 (kg):

Area of mat - nearest 0.002m2 (m2):

Spread rate - R1 (kg/m2): R1 = (m1 - m2) / Area

Loose unit mass of aggregate - DI (t/m3):

Spread rate - R2 (m2/m3): R2 = (1000*DI) / R1

Has the binder been covered as soon as possible after spraying?

Is the application rate uniform and adequate?

Is aggregate firmly embedded into the binder?

Type of rollers used:

Did rolling commence within the required time frame?

▶ No later than 5 minutes for PMB

▶ No later than 15 minutes for cutback bitumen

Spray sheet received?

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Spraying and covering comments:

Post Works Inspection

Post Work Inspection
Condition of Work:

Is the appearance of the mat uniform?

Is there adequate binder depth on the aggregate?

Is there any evidence of flushing or inadequate texture depth?

Defect 1:
Defect 2:

Surface Texture Conditions:

▶ Provide photos with ruler for reference

Surface Texture 1:
Surface Texture 2:

Temporary markers installed?

Adequate after-care signage installed?

Location:
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Location:
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Location:
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Location:
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Site cleanliness?

Further Comments:

Recommendations:

Enter comments or recommendations:

Contractor Performance:

SCC Representative:
Please note that this checklist is a hypothetical example and provides basic information only. It is not intended to take the place of, among other things, workplace, health and safety advice; medical advice, diagnosis, or treatment; or other applicable laws. You should also seek your own professional advice to determine if the use of such checklist is permissible in your workplace or jurisdiction.