01620230

Component

https://doi.org/10.3141/2630-05

Roller-compacted concrete (RCC) pavements present three primary challenges relative to conventional concrete pavement: mixture design, structural design details, and construction process and verification. An investigation was initiated to reconcile the discrepancy between the field and laboratory properties of RCC pavements because of differences in laboratory mixture design procedures and field construction processes. Four RCC pavement projects in Illinois were selected for field coring along with sampling of RCC constituent materials for replication of the laboratory mixture design. Density measurements of field cores indicated that density decreased with depth into the pavement structure and the relative density at paving-lane joints could be as low as 80%. Statistical differences in compressive strength and fracture properties between field and laboratory samples were observed and result from differences in density. A 4% difference in density between field and laboratory samples resulted in an approximate 45% difference in compressive strength. The reduction in field RCC strength and fracture properties relative to the values obtained in the laboratory will result in decreased slab flexural capacity and field performance. Application of the gyratory compactor demonstrated that it can be used repeatedly to compact most RCC mixtures to similar target densities as the modified Proctor method and field-extracted cores. The gap between field and laboratory properties of RCC can be reduced by application of high-density pavers; improvement in mixture design procedure with the gyratory compaction method; a foundation layer beneath the RCC that is stiffer, thicker, or both; reduced RCC lift thicknesses to achieve specified density; or all of these.

01634656

17-03796

English

0000-0001-6194-269X

pp 33–40

2017

Transportation Research Record: Journal of the Transportation Research Board

9780309441841

Digital/other

Figures (5) ; References (33) ; Tables (5)

Construction; Mechanical properties; Mix design; Roller compacted concrete pavements; Structural design

Illinois

Construction; Design; Highways; Materials; Pavements

TRIS, TRB, ATRI

Dec 19 2016 1:11PM

• 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
• Density Observations from a Full-Scale, Untrafficked Test Section with Guidance for Dryback Methods
• 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
• 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