Information

  • Project Description

  • Job Number

  • Weather Conditions

  • SCC-CWS-CM-001

  • Conducted on

  • Prepared By

  • Location

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?

Aggregate:

  • Tested and conforms?

  • Pre-coating conforms?

  • Source of Aggregate

  • ALD consistent with design aggregate?

  • 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:<br><br>▶ Signage<br><br>▶ Traffic Cones<br><br>▶ Flag Persons

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

Surface Preparation:

  • Base Condition (Soft Spots)

  • Has existing surface been broomed?<br><br>▶ Surface has been swept no less than 300mm beyond the edge of the area to be sprayed

  • Has dust been minimised while brooming?

  • Is surface agreed ready and fit to seal?

  • Has there been pre-spraying of areas of varying texture?

  • Have the spray runs been marked to minimise hand work?

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

Information on Sprayer:

  • Mechanical sprayer certified?

  • Spray nozzles as per certificate?

  • Appropriate end jets?

  • Spare nozzles, thermometer and strainer available?

  • Table for sprayer road speed available?

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?<br><br>▶ No later than 5 minutes for PMB<br><br>▶ No later than 15 minutes for cutback bitumen

  • Was back rolling carried out for the required minimum timeframe?<br><br>▶ 1 hour per 1000m2 for roads with < 500 v/l/d<br><br>▶ 1 hour per 1500m2 for roads with > 500 v/l/d

  • Was sufficient sweeping to remove loose aggregate conducted?

  • Did the contractor monitor loose aggregate and undertake additional sweeping if rate is higher than:<br><br>▶ 20 particles per m2 for urban areas<br><br>▶ 30 particles per m2 for med - high traffic (> 250 v/l/d)<br><br>▶ 40 particles per m2 for low traffic (< 250 v/l/d)

  • Spray sheet received?

  • 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:<br><br>▶ Provide photos with ruler for reference

  • Surface Texture 1:

  • Surface Texture 2:

  • Temporary markers installed?

  • Adequate after-care signage installed?

  • Location:
  • Add media

  • Location:
  • Add media

  • Location:
  • Add media

  • Location:
  • Add media

  • Site cleanliness?

  • Further Comments:

Recommendations:

  • Enter comments or recommendations:

  • Contractor Performance:

  • SCC Representative:

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