01648167

Component

https://doi.org/10.3141/2630-17

This paper presents a discussion with data on factors related to the in-place density measurement of asphalt pavements. A review of the literature traces changes to asphalt density measurement technologies over the past 60 years. Two phases of investigation then are presented in which in-place density was evaluated for an ongoing study of environmental effects at a test section in Columbus, Mississippi. A series of laboratory and field activities was performed in Phase 1. In Phase 2, studies were made of laboratory drying practices of specimens that were cored after an extended period of field aging. The key conclusion from these efforts was that ASTM D7227 might not remove sufficient moisture from some specimens to achieve accurate density measurement when pavements have been exposed to moisture for extended periods of time. This paper presents a case with an average error in air void measurement of 0.9% (measured 9.1% when 10% was correct) for specimens that were cored, dried according to ASTM D7227, and then measured for mass in air 1 day later. This finding is of most concern to rehabilitation and research work in areas in which aggregates have high potential for absorption but is of no concern to new construction projects. Furthermore, the work presented here validated the use of ASTM D7227 in circumstances in which mixtures were exposed to moisture for short periods of time. The work also suggested three options to take to accurately measure in-place density for performance testing of aged pavements that contain high-absorption aggregates (i.e., dry in oven, develop correlation equations, or dry for several weeks).

01634656

17-01607

English

pp 134-146

2017

Transportation Research Record: Journal of the Transportation Research Board

9780309441841

Digital/other

Figures; References; Tables

Asphalt pavements; Density; Drying; Moisture content

Construction; Highways; Pavements

TRIS, TRB, ATRI

Oct 5 2017 11:40AM

• Assessment of State Agencies’ Practices in Managing Geotechnical Risk in Design–Build Projects
• Comparison of Qualifications-Based Selection and Best-Value Procurement for Construction Manager–General Contractor Highway Construction
• Economic Impact Analysis of Bridge Construction
• Estimating Earthwork Volumes Through Use of Unmanned Aerial Systems
• Evaluation of Stainless Steel Fasteners for Bolted Field Splice Connections of ASTM A1010 Corrosion-Resistant Steel Plate Girders
• Exploration of Early Work Packaging in Construction Manager–General Contractor Highway Projects
• Factors Related to the Appearance of Transverse Bumps in Asphalt Overlays Placed over Crack Sealant
• Field and Laboratory Properties of Roller-Compacted Concrete Pavements
• Framework for Objectively Determining Best Practices for Alternative Contracting Methods
• Highly Modified Asphalt Binder for Asphalt Crack Relief Mix
• Impact of Alternative Project Delivery Systems on the International Roughness Index: Case Studies of Transportation Projects in the Western United States
• Impact of High Asphalt Binder Replacement on Level Binder Properties for Controlling Reflective Cracking
• Monitoring During Lateral Bridge Slide
• New Quality Assurance Tests for Building Quality Concrete Pavement
• Project Scoping Process Model Development to Achieve On-Time and On-Budget Delivery of Highway Projects
• Roles and Responsibilities of Independent Cost Estimator in Construction Manager–General Contractor Highway Construction
• Wisconsin Department of Transportation Hot-Mix Asphalt Round Robin Laboratory Qualification Testing Program