In-depth Study of Cold In-place Recycled Pavement Performance

In-depth Study of Cold In-place Recycled Pavement Performance
Title In-depth Study of Cold In-place Recycled Pavement Performance PDF eBook
Author Todd V. Scholz
Publisher
Pages 64
Release 1990
Genre Pavements
ISBN

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In-depth Study of Cold In-place Recycled Pavement Performance: Final report

In-depth Study of Cold In-place Recycled Pavement Performance: Final report
Title In-depth Study of Cold In-place Recycled Pavement Performance: Final report PDF eBook
Author Todd V. Scholz
Publisher
Pages 230
Release 1990
Genre Pavements, Asphalt
ISBN

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Cold-recycled Bituminous Concrete Using Bituminous Materials

Cold-recycled Bituminous Concrete Using Bituminous Materials
Title Cold-recycled Bituminous Concrete Using Bituminous Materials PDF eBook
Author Jon A. Epps
Publisher Transportation Research Board
Pages 116
Release 1990
Genre Technology & Engineering
ISBN 9780309049115

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This synthesis will be of interest to pavement designers, construction engineers, and others interested in economical methods for reconstructing or rehabilitating bituminous pavements. Information is provided on the processes and procedures used by a number of states to recycle asphalt pavements in place without application of heat. Since 1975 a growing number of state highway agencies have reconstructed or rehabilitated asphalt pavements by recycling the old pavement in place. This report of the Transportation Research Board describes the processes used for cold in-place recycling, including construction procedures, mix designs, mixture properties, performance, and specifications.

Evaluation of Long-term Field Performance of Cold In-place Recycled Roads

Evaluation of Long-term Field Performance of Cold In-place Recycled Roads
Title Evaluation of Long-term Field Performance of Cold In-place Recycled Roads PDF eBook
Author Don Chen
Publisher
Pages 232
Release 2007
Genre Pavements, Asphalt
ISBN

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Cold in-place recycling (CIR) has become an attractive method for rehabilitating asphalt roads that have good subgrade support and are suffering distress related to non-structural aging and cracking of the pavement layer. Although CIR is widely used, its use could be expanded if its performance were more predictable. Transportation officials have observed roads that were recycled under similar circumstances perform very differently for no clear reason. Moreover, a rational mix design has not yet been developed, design assumptions regarding the structural support of the CIR layer remain empirical and conservative, and there is no clear understanding of the cause-effect relationships between the choices made during the design/construction process and the resulting performance. The objective of this project is to investigate these relationships, especially concerning the age of the recycled pavement, cumulative traffic volume, support conditions, aged engineering properties of the CIR materials, and road performance. Twenty-four CIR asphalt roads constructed in Iowa from 1986 to 2004 were studied: 18 were selected from a sample of roads studied in a previous research project (HR-392), and 6 were selected from newer CIR projects constructed after 1999. This report describes the results of comprehensive field and laboratory testing for these CIR asphalt roads. The results indicate that the modulus of the CIR layer and the air voids of the CIR asphalt binder were the most important factors affecting CIR pavement performance for high-traffic roads. For low-traffic roads, the wet indirect tensile strength significantly affected pavement performance. The results of this research can help identify changes that should be made with regard to design, material selection, and construction in order to improve the performance and cost-effectiveness of future recycled roads.

Review of Cold In-place Recycled Asphalt Concrete Projects

Review of Cold In-place Recycled Asphalt Concrete Projects
Title Review of Cold In-place Recycled Asphalt Concrete Projects PDF eBook
Author
Publisher
Pages 45
Release 1998
Genre Pavements, Asphalt concrete
ISBN

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Field and Laboratory Properties of Lime-Treated Cold In-Place Recycled Asphalt Pavements

Field and Laboratory Properties of Lime-Treated Cold In-Place Recycled Asphalt Pavements
Title Field and Laboratory Properties of Lime-Treated Cold In-Place Recycled Asphalt Pavements PDF eBook
Author RA. Tarefder
Publisher
Pages 11
Release 2006
Genre Asphalt concrete
ISBN

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Cold recycling is a technically promising and cost effective method for improving distressed asphalt pavements. Unlike hot-mix recycling, cold recycling lacks extensive field and laboratory performance data. There is no widely accepted cold in-place recycling (CIR) mix design and testing standard available. This study attempts to generate useful field and laboratory data on pavements constructed with CIR mix and technique. Two field case studies are conducted. The testing of field cores and laboratory samples from these two field sites is conducted to address the existing and new methods for design and performance testing of CIR mixes in partial depth pavements. The laboratory tests include physical property testing (e.g., moisture content, gradation, air voids, emulsion, and aggregate properties) and performance-related testing (e.g., resistance to deformation, retained strength, rut, and fatigue). Relative performances of the CIR mixes from the two sites are analyzed.

Practice and Performance of Cold In-place Recycling and Cold Central Plant Recycling

Practice and Performance of Cold In-place Recycling and Cold Central Plant Recycling
Title Practice and Performance of Cold In-place Recycling and Cold Central Plant Recycling PDF eBook
Author Mary Stroup-Gardiner
Publisher
Pages 0
Release 2021
Genre Pavements, Asphalt
ISBN 9780309674188

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Cold in-place recycling (CIR) is a process in which 3 to 4 inches of the existing asphalt pavement layers are pulverized, mixed with a recycling agent, and repaved in place. It provides agencies with cost-effective and environmentally friendly pavement maintenance and rehabilitation options for aged asphalt pavements. The TRB National Cooperative Highway Research Program's NCHRP Synthesis 569: Practice and Performance of Cold In-Place Recycling and Cold Central Plant Recycling compiles and documents information regarding the current state of practice on how CIR and cold central plant recycling (CCPR) technologies are selected, designed, constructed, and evaluated by state departments of transportation (DOTs).