critical inspection items - oregon · 2020. 1. 22. · acp inspector january 2019 critical...
TRANSCRIPT
![Page 1: Critical Inspection Items - Oregon · 2020. 1. 22. · ACP Inspector January 2019 Critical Inspection Items 14-11 #3 Continuous Paving Module 5: Delivery & Module 6: Pavers & Laydown](https://reader035.vdocuments.us/reader035/viewer/2022071415/610f8cfbd8edce5047642382/html5/thumbnails/1.jpg)
ACP Inspector January 2019
Critical Inspection Items 14-1
Critical Inspection Items
Critical Inspection Items
Module 14Module 14
Critical Inspection Items
STOP POOR PRACTICES!Bad Quality & Bad Workmanship
ADDRESS CRITICAL ITEMS on the grade to ensure good long term performance
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ACP Inspector January 2019
Critical Inspection Items 14-2
Critical Inspection Items
1. Milling & Clean Surface
2. Uniform Tack
3. Continuous Paving
4. Segregation
5. Uniform Surface Texture
6. Compaction
7. Smoothness
8. Approaches & Utilities
9. Joints – tight, even, straight
10. Late Season & Weather
4: SURFACE PREP
5 & 6 : DELIVERY, PAVERS & LAYDOWN
7, 8, 9 & 10: COMPACTION & SMOOTHNESS
11: JOINTS
12: MISC ISSUES
Critical Inspection Items
6. Compaction
Spec Equipment
Proper Temperature
Adequate Compactive Effort
Achieve Required Density
Monitor Rolling Pattern
Proper Compacted Thickness
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ACP Inspector January 2019
Critical Inspection Items 14-3
#1Milling & Clean Surface
#1Milling & Clean Surface
Module 4: Surface PreparationModule 4: Surface Preparation
Milling Operations – Section 00620“Cold Plane Pavement Removal”
Purpose:
• Remove existing cracks
• Remove existing ruts
• Remove poor quality materials
• Adjust elevation
#1 - Milling & Clean Surface
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ACP Inspector January 2019
Critical Inspection Items 14-4
#1 - Milling & Clean Surface
Milling OperationsProblem Area for Cleaning Inlays
Material in Corners
#1 - Milling & Clean Surface
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ACP Inspector January 2019
Critical Inspection Items 14-5
#1 - Milling & Clean Surface
#1 - Milling & Clean Surface
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ACP Inspector January 2019
Critical Inspection Items 14-6
#1 - Milling & Clean Surface
#2Uniform Tack
#2Uniform Tack
Module 4: Surface PreparationModule 4: Surface Preparation
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ACP Inspector January 2019
Critical Inspection Items 14-7
Section 00730Emulsified Asphalt Tack Coat
Objectives
90% coverage!!!
Proper application rate
Suitable dilution
Proper temperature
Proper spray bar height
No plugged nozzles
Triple lap coverage
Don’t fill in valleys on milled surfaces
#2 – Uniform Tack
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ACP Inspector January 2019
Critical Inspection Items 14-8
#2 – Uniform Tack
#2 – Uniform Tack
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ACP Inspector January 2019
Critical Inspection Items 14-9
#2 – Uniform Tack
#2 – Uniform Tack
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ACP Inspector January 2019
Critical Inspection Items 14-10
#2 – Uniform Tack
#2 – Uniform Tack
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ACP Inspector January 2019
Critical Inspection Items 14-11
#3Continuous Paving
#3Continuous Paving
Module 5: Delivery &Module 6: Pavers & Laydown
Module 5: Delivery &Module 6: Pavers & Laydown
00745.46(a)“Deliver the mixture to the paving machine at a rate that provides
continuous operation of the paving machine…”
ROLLERS:- Stop at angle- Leave vibration off- Keep pneumatic moving –
don’t stop on the mat
PAVERS:Rapid Stop – Rapid Start
IF STOPPING IS “UNAVOIDABLE”...
#3 – Continuous Paving
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ACP Inspector January 2019
Critical Inspection Items 14-12
00745.43(b)Minimum Temperature Behind Paver
240° F for Dense Mix
#3 – Continuous Paving
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ACP Inspector January 2019
Critical Inspection Items 14-13
#3 – Continuous Paving
#4Segregation
#4Segregation
Module 5: Delivery &Module 6: Pavers & Laydown
Module 5: Delivery &Module 6: Pavers & Laydown
00745.60(c)“If segregation continues to occur, stop production...”
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ACP Inspector January 2019
Critical Inspection Items 14-14
Segregation
1. Loadout
2. Truck Exchange
3. Paving
– Angel Wings
– Gate Tunnels
– Gear Box
#4 - Segregation
LOADOUT!
312
#4 - Segregation
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ACP Inspector January 2019
Critical Inspection Items 14-15
TRUCK EXCHANGE!
00745.46(b)“Deposit ACP from the hauling
vehicles so segregation is prevented”
#4 - Segregation
#4 - Segregation
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ACP Inspector January 2019
Critical Inspection Items 14-16
#4 - Segregation
#4 - Segregation
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ACP Inspector January 2019
Critical Inspection Items 14-17
#4 - Segregation
#4 - Segregation
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ACP Inspector January 2019
Critical Inspection Items 14-18
#4 - Segregation
#4 - Segregation
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ACP Inspector January 2019
Critical Inspection Items 14-19
#4 - Segregation
#4 - Segregation
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ACP Inspector January 2019
Critical Inspection Items 14-20
#5Uniform Surface Texture
#5Uniform Surface Texture
Module 5: Delivery &Module 6: Pavers & Laydown
Module 5: Delivery &Module 6: Pavers & Laydown
00745.60(b)“Immediately replace boils, slicks,
and oversized material with fresh mixture”
#5 – Uniform Surface Texture
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ACP Inspector January 2019
Critical Inspection Items 14-21
#5 – Uniform Surface Texture
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ACP Inspector January 2019
Critical Inspection Items 14-22
#5 – Uniform Surface Texture
#5 – Uniform Surface Texture
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ACP Inspector January 2019
Critical Inspection Items 14-23
#5 – Uniform Surface Texture
#5 – Uniform Surface Texture
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ACP Inspector January 2019
Critical Inspection Items 14-24
#5 – Uniform Surface Texture
#6Compaction
#6Compaction
Module 7: Compaction FundamentalsModule 8: Compaction Equipment & Operations
Module 7: Compaction FundamentalsModule 8: Compaction Equipment & Operations
“Compaction, Compaction, Compaction”
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ACP Inspector January 2019
Critical Inspection Items 14-25
6. Compaction
Spec equipment
Proper temperature
Adequate compactive effort
Achieve required density
Monitor rolling pattern
Proper compacted thickness
#6 - Compaction
6. Compaction
Spec Equipment
Static Steel-Wheeled Roller
Pneumatic – Rubber Tired Roller
Vibratory Roller
#6 - Compaction
00745.24 - Compactors
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ACP Inspector January 2019
Critical Inspection Items 14-26
Static Steel-Wheeled Rollers (00745.24)
#6 - Compaction
Pneumatic Rollers(00745.24)
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-27
Reed Tachometer
#6 - Compaction
6. Compaction
Proper Temperature
Surface Temperature00745.40
Mix TemperaturePer JMF, 745.43, 745.49(a-1)
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-28
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-29
6. Compaction
Adequate Compactive Effort
Review Control Strip - 8 to 12 passes?
#6 - Compaction
6. Compaction
Achieve Required Density
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-30
Achieve Required Density
92.0%
#6 - Compaction
00745.49(b)(3)
Boiler Plate Special Provisions
Exception – 91.0% if:First ACP lift & < 3" thick& on agg baseNOT OR!
#6 - Compaction
Low Density(high voids)
- Cracking
- Stripping
- Too Permeable
High Density(low voids)
- Rutting
- Shoving
- Flushing
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ACP Inspector January 2019
Critical Inspection Items 14-31
#6 - Compaction
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-32
6. Compaction
Monitor Rolling Pattern
Consistent, Adequate Effort
#6 - Compaction
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-33
6. Compaction
Proper Compacted Thickness
#6 - Compaction
#6 - Compaction
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ACP Inspector January 2019
Critical Inspection Items 14-34
6. Compaction
Spec equipment
Proper temperature
Adequate compactive effort
Achieve required density
Monitor rolling pattern
Proper compacted thickness
#6 - Compaction
#7Smoothness
#7Smoothness
Module 9: Compaction Testing
Module 10 Smoothness Testing
Module 9: Compaction Testing
Module 10 Smoothness Testing
Which Specification does your project use?
Blue Book? OR Boiler Plate Specials?
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ACP Inspector January 2019
Critical Inspection Items 14-35
#7 - Smoothness
#7 - Smoothness
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ACP Inspector January 2019
Critical Inspection Items 14-36
#7 - Smoothness
#8Approaches & Utilities
#8Approaches & Utilities
Module 8: Compaction Equipment & OperationsModule 9: Compaction Testing
Module 8: Compaction Equipment & OperationsModule 9: Compaction Testing
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ACP Inspector January 2019
Critical Inspection Items 14-37
#8 – Approaches & Utilities
#8 – Approaches & Utilities
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ACP Inspector January 2019
Critical Inspection Items 14-38
#8 – Approaches & Utilities
#8 – Approaches & Utilities
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ACP Inspector January 2019
Critical Inspection Items 14-39
#9Joints
#9Joints
Module 11: JointsModule 11: Joints
Longitudinal Joints!!!Longitudinal Joints!!!
Tight, Even, & StraightTight, Even, & Straight
#9 - Joints
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ACP Inspector January 2019
Critical Inspection Items 14-40
#9 - Joints
#9 - Joints
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ACP Inspector January 2019
Critical Inspection Items 14-41
#9 - Joints
#9 - Joints
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ACP Inspector January 2019
Critical Inspection Items 14-42
#9 - Joints
#9 - Joints
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ACP Inspector January 2019
Critical Inspection Items 14-43
#9 - Joints
#9 - Joints
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ACP Inspector January 2019
Critical Inspection Items 14-44
#9 - Joints
#9 - Joints
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ACP Inspector January 2019
Critical Inspection Items 14-45
#10Late Season Paving & Weather
#10Late Season Paving & Weather
Module 12: Miscellaneous IssuesModule 12: Miscellaneous Issues
00745.40Season & Temperature Limitations
Season & Temperature Limitations00745.40
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ACP Inspector January 2019
Critical Inspection Items 14-46
Rain = Moisture!!!Rain = Moisture!!!
#10 – Late Season & Weather
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ACP Inspector January 2019
Critical Inspection Items 14-47
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ACP Inspector January 2019
Critical Inspection Items 14-48
#10 – Late Season & Weather
1) Don’t leave open trenches
2) Don’t leave exposed tack
Otherwise, STOP further mix delivery!
WE HAVE TO DO BETTER!!!!WE HAVE TO DO BETTER!!!!
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ACP Inspector January 2019
Critical Inspection Items 14-49
Critical Inspection Items
1. Milling & Clean Surface
2. Uniform Tack
3. Continuous Paving
4. Segregation
5. Uniform Surface Texture
6. Compaction
7. Smoothness
8. Approaches & Utilities
9. Joints – tight, even, straight
10. Late Season & Weather
4: SURFACE PREP
5 & 6 : DELIVERY, PAVERS & LAYDOWN
7, 8, 9 & 10:COMPACTION & SMOOTHNESS
11: JOINTS
12: MISC ISSUES
Critical Inspection Items
6. Compaction
Spec equipment
Proper temperature
Adequate compactive effort
Achieve required density
Monitor rolling pattern
Proper compacted thickness