01515664

Component

https://doi.org/10.3141/2431-08

http://scholar.google.com...Qadi&publication_year=2014

When properly installed, hot-poured crack sealants are widely accepted as a cost-effective, routine preventive maintenance practice that extends pavement service life by 3 to 5 years. However, current ASTM specifications for selection of crack sealants correlate poorly with field performance. Therefore, an improved sealant specification and selection system is urgently needed. Recently, performance-based guidelines were developed by the pooled-fund North American Consortium expert group for selecting hot-poured bituminous crack sealants. The work proposed a sealant grade system for selecting hot-poured crack sealant on the basis of environmental conditions. A special effort was made to use the equipment originally developed by SHRP, which was used to measure binder rheological behavior as part of the performance grade system. The equipment and testing procedures used for performance grading of binders were modified in accordance with crack sealant behavior. The main objective of this study was to validate the low-temperature selection thresholds for the newly developed performance-based guidelines for selecting hot-poured crack sealants. Thresholds for the crack sealant bending beam rheometer, crack sealant direct tension test, and crack sealant adhesion test were validated. Nine hot-poured crack sealants were installed in four test sites experiencing low temperatures. The field performance of crack sealants was evaluated for 2 consecutive years by detailed field surveys. The field database consisted of 40 sections containing 647 cracks. Overall, results showed good correlation between the proposed selection thresholds and sealant performance in the field.

01539593

14-2993

English

pp 57–66

2014

Transportation Research Record: Journal of the Transportation Research Board

9780309295178

Print

Figures (5) ; References (12) ; Tables (3)

Adhesion; Bituminous materials; Field tests; Guidelines; Low temperature tests; Pavement performance; Rheological properties; Sealing compounds; Tension tests; Validation

Highways; Maintenance and Preservation; Materials; Pavements; I31: Bituminous Binders and Materials; I60: Maintenance

TRIS, TRB, ATRI

Jan 27 2014 3:02PM

• Bayesian Model for Predicting the Performance of Pavements Treated with Thin Hot-Mix Asphalt Overlays
• Defect-Based Condition Assessment of Concrete Bridges: Fuzzy Hierarchical Evidential Reasoning Approach
• Long-Term Cost-Effectiveness of Asphalt Pavement Pothole Patching Methods
• Measured Anchor Rod Tightening of High-Mast Light Poles in Alaska
• Modeling and Analyzing Budget-Constrained Pavement Preservation Strategies
• Pavement Performance Measures: How States See Good, Fair, and Poor
• Performance and Benefits of Michigan Department of Transportation’s Capital Preventive Maintenance Program
• Selection of Appropriate Material, Construction Technique, and Structural System of Bridges by Use of Multicriteria Decision-Making Method
• Spreadsheet Method of Forecasting the Cost of Sustaining a Set of Bridge Connections
• Using Enhanced Econometric Techniques to Verify the Service Life of Asset Interventions: A Case Study for Indiana
• Using Multiple Investigative Techniques to Assess Flushing of Chip Seal Surfaces