bridge joint performance in northeastern states joi… · quinn, b. h. and civjan, s. a. (2016)...
TRANSCRIPT
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WBPP 2016 Presentation
Bridge Joint Performance in Northeastern States
Presentation by:
Scott Civjan and Brooke Quinn University of Massachusetts Amherst
Research Funded by:
Massachusetts Department of Transportation
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2 WBPP 2016 Presentation
Outline of Project:
Literature review Evaluate MassDOT PONTIS/NBI bridge data Meet with 6 MassDOT districts Create and distribute survey to 9 Northeast states Compile survey responses
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3 WBPP 2016 Presentation
Full Report
Quinn, B. H. and Civjan, S. A. (2016) Better Bridge Joint Technology. UMTC 15.01, Massachusetts Department of Transportation
Quinn, B. H. and Civjan, S. A. (2016) “Assessment of Bridge Joint Performance in the Northeastern States” Transportation Research Record. Vol 2550. pp 46-53. • Overview of joint types and uses • MassDOT district information • Survey results from 9 states
• Detail on MassDOT practices and recommendations • Detailed comments and recommendations from each state
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Effects of Joint Failure
Superstructure damage (Photos courtesy of MassDOT)
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Effects of Joint Failure
Substructure damage
Rate of corrosion and degree of damage increase with time
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Reference Surveys
Purvis, R. (2003) Bridge Deck Joint Performance – A Synthesis of Highway Practice. NCHRP Synthesis Report 319. • Summary of joint types
• 34 states and 10 Canadian provinces • 7 states included in this study
• Strip seal successful • Construction quality and maintenance were significant factors
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Reference Surveys
Milner, M. H. and Shenton III, H. W. (2014) Survey of Past Experience and State-of-the-Practice in the Design and Maintenance of Small Movement Expansion Joints in the Northeast. AASHTO TSP2 Report 24 • Focus on 2” or less movement • 12 states (26 respondents) • All 9 states in this study
• Strip seal common for new construction • Strip seal, asphalt plug joint and pourable seal for repairs • Compression seal poor performance • Construction quality and maintenance were significant factors
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Types of Joints: Closed Joints
Saw and Seal (< ½”)
Figure Source: MassDOT LRFD Bridge Manual Part II, 2013
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Types of Joints: Closed Joints
Asphalt Plug Joint (<2”)
Figure Source: MassDOT LRFD Bridge Manual Part II, 2013
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Types of Joints: Closed Joints
Rutting/cracking in asphalt plug joint
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Compression Seal (<2.5”)
Types of Joints: Closed Joints
Figure Source: Purvis, 2003
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Types of Joints: Closed Joints
Damage progression of a compression seal (Photos courtesy of MassDOT)
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Types of Joints: Closed Joints
Strip Seal (<4”)
Figure Source: MassDOT LRFD Bridge Manual Part II, 2013
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Types of Joints: Closed Joints
Damaged strip seal (Photo courtesy of MassDOT)
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Types of Joints: Closed Joints
EM-SEAL (<4”)
Figure Source: EM-SEAL Manufacturer, 2015
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Types of Joints: Closed Joints
EM-SEAL installation (Photo courtesy of MassDOT) • Pre-formed for curb and barrier installation
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Types of Joints: Closed Joints
Pourable Seal (<4”)
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Types of Joints: Closed Joints
Damaged pourable seal (Photo courtesy of MassDOT)
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Types of Joints: Closed Joints
Modular Joint (>4”)
Figure Source: Purvis, 2003
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Types of Joints: Closed Joints
Damaged modular joint (Photo courtesy of MassDOT)
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Types of Joints: Open Joints
Sliding Plate Joint (< 3”)
Figure Source: Purvis, 2003
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Types of Joints: Open Joints
Finger Joint (>4”)
Figure Source: Purvis, 2003
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Types of Joints: Open Joints
Improper function of finger joint (75° F) and trough
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Jointless Option
Link-Slab
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Massachusetts Bridge Inventory
Districts of MassDOT and highway system.
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Source: PONTIS and NBI Databases See full report for interstate/turnpike bridges
No. of Bridges
District Number
TOTAL
TOTAL OWNED
BY MASSDOT
1 2 3 4 5 6
Total 703 834 1158 827 858 682 5062 3474
“Jointed Bridges” 185 413 624 558 455 579 2814 2557
District 1: Rural, short span, low traffic volume District 2: Medium and short spans Districts 3 and 4: Wide variety from rural to urban District 5: Many limited access highways, high traffic volume District 6: Boston, urban bridges, high volume
Massachusetts Bridge Inventory
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Massachusetts District Meetings
Low volume and shorter spans • Lane closures common for repair • Full installation time allowed
High volume and limited access highways • 8 PM to 5 AM window for work • Quick setting headers are required • Less surface preparation
Turnpike bridges
• Thin wearing surface (1-1/2 in.) limits joint types • Quicker deterioration (wearing surface and traffic volume)
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Massachusetts Bridge Inventory
Source: PONTIS and NBI Databases
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Massachusetts District Meetings
New construction – centralized • Design often by consultants • Re-deck considered new construction
Repair – district specific
• Source documents from central office but modified
Maintenance – district specific • No manual of practice • District decisions based on centralized funding • No district has an existing joint maintenance policy
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Wide variety of preferences within state did not match previous survey responses in literature review
Performance not directly related to traffic volume or
bridge span
Factors in joint selection • Expectations of joint performance • Installation and inspection practices • Regional contractor experience • Traffic volume • Time window for work completion
Massachusetts District Meetings
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Survey
Survey created in Survey Monkey (44 questions) • Joints • Headers • New installation and repair • Maintenance • Overall practice
Distributed to 9 states
• CT, ME, MA, NH, NJ, NY, PA, RI, and VT • 26 responses (45% response rate) • Many states had multiple respondents
Full list of survey questions is available in Final Report
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Survey Summary: Overview
Wide variability in performance, preference, and service lives of any given joint
Definitions of success and failure of joint varies
Preventive maintenance and installation workmanship are very important
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Survey Summary: Success/Failure Definitions
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Survey Summary: Performance Rating
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Best performance • Link slab • EM-Seal • Compression seal (poor in previous study) • Saw and seal: deck over backwall • Finger joints
Worst performance • Open joints • Sliding plate joints • Pourable seals
Every joint was rated high and low by at least one respondent
Survey Summary: Performance Rating
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Survey Summary: Expected Service Life of Joint Types
A successful joint is not necessarily the longest service life
Years Asp
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0-4 6 2 2 11 1 0 0 0 0 1 0 1
5-8 13 1 2 0 1 0 0 1 0 0 1 1
9-12 1 5 6 2 1 0 1 3 1 1 5 1
13-16 1 7 5 0 0 3 2 4 2 0 1 0
>16 0 4 2 0 1 3 16 8 4 3 4 0
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Pourable seals • Shortest life (<4 years) • Quick installation and repair • Less expensive
Asphalt plug joints
• Short life (5-8 years) • Quick installation and repair • Relatively inexpensive
Survey Summary: Typical Service Life of Joint Types
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Survey Summary:
Adequate performance with routine repair and maintenance (check all that apply)
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Survey Summary:
When maintenance was assumed to occur Good performance
• Asphalt plug joints • Strip seals • Compression seals • Finger joints – but drainage and snowplows are of
concern
• All types selected by at least one respondent
Joints rated poorly often rated as adequate performance with proper maintenance
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Survey Summary: Importance of Factors
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Survey Summary: Comments
Header installation • Old concrete must be sufficiently removed to sound
material • Difficult to assess, left to contractor • 2 feet minimum removal to sides?
• Apply to fully dry materials • Quick setting concrete or elastomeric headers
• Not as durable • Required for overnight construction
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Negative influence on joint performance • Improper cleaning of joint, surfaces and substrate
• Sandblasting often skipped due to time constraints • Not reaching sound concrete
• Incorrect opening size or placement of seals • Bond agent applied too far in advance of seal placement • Application to damp surfaces • Failure to install bond breaker tape • Phased construction
Survey Summary: Installation Practices
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Survey Summary: Comments
Specific joint comments • Saw and seal – proper location of cut is important, mark
prior to placing wearing surface • Asphalt plug joints perform poorly with high traffic volumes,
improper placement of backer rod • Compression seal – size seal and opening to always be in
compression • Pourable seal – joint edges must be completely clean and
dry, improper placement of backer rod • Anchorage of armored headers and sliding plate joints is
critical
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Survey Summary: Comments
New products • EM-Seal
• Detailing for parapets and curbs • Asphalt plug joints
• Pre-bagged materials • Modified to use in combination with strip seal or EM-seal
• Inverted-V strip seal, Silicoflex joints
• Concrete trough with finger joint (behind abutments) • Heavy angles and anchorage for joint armor
RJ Watson Silicoflex system DS Brown V-Seal system
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Survey Summary: Comments
Watertight testing of new joints (only 3 of 9 states) • Warranty post-construction is difficult to enforce
Maintenance • Clean joints and decks (only 5 of 9 states) • Funding issues • Investment would minimize joint repairs/replacements
and bridge element repairs
Funding • Limited • Maintenance, construction and repair budgets for joints
and structure/substructure are independent
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CONCLUSIONS
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Recommendations for Implementation
Pre-construction meetings: address joint installation and expected performance
Training of contractors, installers and site engineers • Proper workmanship • Proper installation • Proper materials
Manufacturer representative: on-site/provide training Watertight testing of closed joints
(new/repair/replacement) Warranty joint performance post-construction
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54 WBPP 2016 Presentation
Recommendations for Implementation
Preventive maintenance Track joint performance and document repair work
(joint and superstructure/substructure) with associated cost
Budget: consider life-cycle and system costs Streamline process for adding new products to
approved product lists
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Recommendations for Future Research
Evaluate repair and replacement methods and contracting to determine best practices
Measure installation tolerances Quantify damage from joint and header mis-alignment Evaluate header performance under impact, cyclic load,
freeze-thaw, etc. Develop test methods for approval of joint and header
materials Determine life-cycle cost comparisons of similar joints
with and without preventive maintenance Quantify life-cycle cost impacts from failed joints (joint,
superstructure and substructure)
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References
Quinn, B. H. and Civjan, S. A. (2016) Better Bridge Joint Technology. UMTC 15.01, Massachusetts Department of Transportation
• http://www.ecs.umass.edu/umtc/researchUMass.shtml Quinn, B. H. and Civjan, S. A. (2016) “Assessment of Bridge Joint Performance
in the Northeastern States” Transportation Research Record. Vol 2550. pp 46-53.
Purvis, R. (2003) Bridge Deck Joint Performance – A Synthesis of Highway Practice. NCHRP Synthesis Report 319. Transportation Research Board, National Research Council, Washington, DC
Milner, M. H. and Shenton III, H. W. (2014) Survey of Past Experience and State-of-the-Practice in the Design and Maintenance of Small Movement Expansion Joints in the Northeast. AASHTO Transportation System Preservation Technical Services Program (TSP2) Report 242, Newark, Delaware
MassDOT LRFD Bridge Manual Part II. (2013) Massachusetts Dept. of Transportation
AASHTO Maintenance Manual for Roadways and Bridges. (2007) American Association of State Highway and Transportation Officials Contact information
Scott Civjan [email protected] 413-545-2521