Author: Charles Warren Schwartz
Publisher:
ISBN: 9780309446716
Category : Pavements, Asphalt concrete
Languages : en
Pages : 74
Book Description
Material Properties of Cold In-place Recycled and Full-depth Reclamation Asphalt Concrete
Author: Charles Warren Schwartz
Publisher:
ISBN: 9780309446716
Category : Pavements, Asphalt concrete
Languages : en
Pages : 74
Book Description
Publisher:
ISBN: 9780309446716
Category : Pavements, Asphalt concrete
Languages : en
Pages : 74
Book Description
Cold-recycled Bituminous Concrete Using Bituminous Materials
Author: Jon A. Epps
Publisher: Transportation Research Board
ISBN: 9780309049115
Category : Technology & Engineering
Languages : en
Pages : 116
Book Description
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.
Publisher: Transportation Research Board
ISBN: 9780309049115
Category : Technology & Engineering
Languages : en
Pages : 116
Book Description
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.
Recycling and Reclamation of Asphalt Pavements Using In-Place Methods
Author: Mary Stroup-Gardiner
Publisher: Transportation Research Board National Research
ISBN: 9780309143448
Category : Pavements, Asphalt
Languages : en
Pages : 70
Book Description
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 421: Recycling and Reclamation of Asphalt Pavements Using In-Place Methods discusses the use of hot in-place recycling, cold in-place recycling, and full-depth reclamation of asphalt pavements.
Publisher: Transportation Research Board National Research
ISBN: 9780309143448
Category : Pavements, Asphalt
Languages : en
Pages : 70
Book Description
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 421: Recycling and Reclamation of Asphalt Pavements Using In-Place Methods discusses the use of hot in-place recycling, cold in-place recycling, and full-depth reclamation of asphalt pavements.
Asphalt Cold Mix Manual
Author: Asphalt Institute
Publisher:
ISBN: 9781934154090
Category : Aggregates (Building materials)
Languages : en
Pages : 185
Book Description
Publisher:
ISBN: 9781934154090
Category : Aggregates (Building materials)
Languages : en
Pages : 185
Book Description
Proceedings of the 10th International Conference on Maintenance and Rehabilitation of Pavements
Author: Paulo Pereira
Publisher: Springer Nature
ISBN: 3031635841
Category :
Languages : en
Pages : 666
Book Description
Publisher: Springer Nature
ISBN: 3031635841
Category :
Languages : en
Pages : 666
Book Description
Superpave Mix Design
Author: Asphalt Institute
Publisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
Book Description
Publisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
Book Description
Quantifying Workability, Compactability, and Cohesion Gain of Asphalt Emulsion Cold In-place Recycling
Author: Sadie Casillas
Publisher:
ISBN:
Category :
Languages : en
Pages : 388
Book Description
To maximize the life and quality of a pavement, proper maintenance and rehabilitation are essential. Strategies for pavement rehabilitation with many sustainable benefits are pavement recycling. This dissertation focuses on two types of in-situ pavement recycling: Cold in-place recycling (CIR) stabilized with asphalt emulsion and full depth reclamation (FDR) stabilized with asphalt emulsion or foamed asphalt. One white paper (Chapter 2), two accepted peer reviewed journal articles (Chapters 3 and 4), and one submitted peer reviewed journal article (Chapter 5) are presented in this document to create better understanding of the unique material characterization of asphalt emulsion cold recycled materials, along with factors which influence characterization, pertaining to the measurement of workability, compactability, and cohesion gain. In Chapter 2, a detailed review of the progression of mix design procedures for unbound granular materials (UGM), fully bound hot mix asphalt (HMA), and semi-bound asphalt emulsion CIR is presented to establish the current state of mix design for each material type and identify ways the design of asphalt emulsion CIR could become more engineered rather than empirical. Recommendations included development of additional guidance on use of active and inert fillers, a methodology to account for workability and compactability during mix design, curing procedures which more closely mimic conditions in the field to improve cohesion gain, and a procedure for determination of optimum water content. In Chapter 3, a study was conducted to evaluate different laboratory compaction methods for compaction of asphalt emulsion and foamed asphalt FDR. Both the Proctor hammer, typically used for UGM, and the Superpave Gyratory Compactor (SGC), typically used for HMA, were compared by evaluating densities, tensile strengths, and compaction metrics of FDR samples produced using each method. The modified Proctor hammer produced samples with the highest dry unit weights; however, samples produced using the SGC had higher tensile strengths, indicating compaction method affects material properties. Chapter 4 evaluates different test methods and equipment commonly available in asphalt laboratories for ability to quantify workability, compactability, and cohesion gain of asphalt emulsion CIR by measuring differences in performance due to changes in laboratory curing conditions. Cure temperature was found to have a more significant influence on test results than cure time. SGC metrics were recommended for quantifying workability and compactability. The direct shear test showed promise for quantifying cohesion gain. Finally, Chapter 5 measured effects of various sample fabrication factors on measurement of workability, compactability, and cohesion gain in order to address open questions associated with asphalt emulsion CIR laboratory procedures. Curing temperature most significantly influenced workability and compactability; while cohesion gain was more significantly influenced by mixing temperature and specimen test temperature. The direct shear test again showed promise for measuring cohesion gain of asphalt emulsion CIR. Therefore, a draft specification for this test method was prepared and is included as an appendix of this dissertation. A singular test method for quantifying workability and compactability for asphalt emulsion CIR has not yet been identified due to multiple mechanisms at play during mixing and compaction stages for this material.
Publisher:
ISBN:
Category :
Languages : en
Pages : 388
Book Description
To maximize the life and quality of a pavement, proper maintenance and rehabilitation are essential. Strategies for pavement rehabilitation with many sustainable benefits are pavement recycling. This dissertation focuses on two types of in-situ pavement recycling: Cold in-place recycling (CIR) stabilized with asphalt emulsion and full depth reclamation (FDR) stabilized with asphalt emulsion or foamed asphalt. One white paper (Chapter 2), two accepted peer reviewed journal articles (Chapters 3 and 4), and one submitted peer reviewed journal article (Chapter 5) are presented in this document to create better understanding of the unique material characterization of asphalt emulsion cold recycled materials, along with factors which influence characterization, pertaining to the measurement of workability, compactability, and cohesion gain. In Chapter 2, a detailed review of the progression of mix design procedures for unbound granular materials (UGM), fully bound hot mix asphalt (HMA), and semi-bound asphalt emulsion CIR is presented to establish the current state of mix design for each material type and identify ways the design of asphalt emulsion CIR could become more engineered rather than empirical. Recommendations included development of additional guidance on use of active and inert fillers, a methodology to account for workability and compactability during mix design, curing procedures which more closely mimic conditions in the field to improve cohesion gain, and a procedure for determination of optimum water content. In Chapter 3, a study was conducted to evaluate different laboratory compaction methods for compaction of asphalt emulsion and foamed asphalt FDR. Both the Proctor hammer, typically used for UGM, and the Superpave Gyratory Compactor (SGC), typically used for HMA, were compared by evaluating densities, tensile strengths, and compaction metrics of FDR samples produced using each method. The modified Proctor hammer produced samples with the highest dry unit weights; however, samples produced using the SGC had higher tensile strengths, indicating compaction method affects material properties. Chapter 4 evaluates different test methods and equipment commonly available in asphalt laboratories for ability to quantify workability, compactability, and cohesion gain of asphalt emulsion CIR by measuring differences in performance due to changes in laboratory curing conditions. Cure temperature was found to have a more significant influence on test results than cure time. SGC metrics were recommended for quantifying workability and compactability. The direct shear test showed promise for quantifying cohesion gain. Finally, Chapter 5 measured effects of various sample fabrication factors on measurement of workability, compactability, and cohesion gain in order to address open questions associated with asphalt emulsion CIR laboratory procedures. Curing temperature most significantly influenced workability and compactability; while cohesion gain was more significantly influenced by mixing temperature and specimen test temperature. The direct shear test again showed promise for measuring cohesion gain of asphalt emulsion CIR. Therefore, a draft specification for this test method was prepared and is included as an appendix of this dissertation. A singular test method for quantifying workability and compactability for asphalt emulsion CIR has not yet been identified due to multiple mechanisms at play during mixing and compaction stages for this material.
Recycled Materials and by Products in Highway Applications
Author: Mary Stroup-Gardiner
Publisher: Transportation Research Board
ISBN: 0309223687
Category : Technology & Engineering
Languages : en
Pages : 103
Book Description
Recycled materials and industrial byproducts are being used in transportation applications with increasing frequency. There is a growing body of experience showing that these materials work well in highway applications. This study gathers the experiences of transportation agencies in determining the relevant properties of recycled materials and industrial byproducts and the beneficial use for highway applications. Information for this study was acquired through a literature review, and surveys and interviews with state department of transportation staff. The report will serve as a guide to states revising the provisions of their materials specifications to incorporate the use of recycled materials and industrial byproducts, and should, thereby, assist producers and users in leveling the playing field for a wide range of dissimilar materials.
Publisher: Transportation Research Board
ISBN: 0309223687
Category : Technology & Engineering
Languages : en
Pages : 103
Book Description
Recycled materials and industrial byproducts are being used in transportation applications with increasing frequency. There is a growing body of experience showing that these materials work well in highway applications. This study gathers the experiences of transportation agencies in determining the relevant properties of recycled materials and industrial byproducts and the beneficial use for highway applications. Information for this study was acquired through a literature review, and surveys and interviews with state department of transportation staff. The report will serve as a guide to states revising the provisions of their materials specifications to incorporate the use of recycled materials and industrial byproducts, and should, thereby, assist producers and users in leveling the playing field for a wide range of dissimilar materials.
An Introduction to Cold Recycling of Asphalt Concrete Pavement for Professional Engineers
Author: J. Paul Guyer
Publisher: Guyer Partners
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 32
Book Description
Introductory technical guidance for civil engineers and other professional engineers and construction managers interested in cold recycling of asphalt concrete pavement. Here is what is discussed: 1. INTRODUCTION, 2. BACKGROUND, 3. INITIAL PROJECT SELECTION CRITERIA, 4. TRAFFIC, 5. STRUCTURAL ASSESSMENT, 6. OVERLAY THICKNESS DESIGN, 7. INITIAL STRUCTURAL SUPPORT, 8. PROJECT LENGTH, 9. CURING, 10. UTILITIES, 11. SURFACE TREATMENTS, 12. PAVING FABRICS, GEOSYNTHETICS AND CRACK SEAL, 13. PATCHES, 14. FINAL PROJECT SELECTION, 15. ECONOMIC ASSESSMENT, 16. SUMMARY, 17. SIGNIFICANT IN-PLACE RECYCLING RESOURCES, 18. REFERENCES.
Publisher: Guyer Partners
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 32
Book Description
Introductory technical guidance for civil engineers and other professional engineers and construction managers interested in cold recycling of asphalt concrete pavement. Here is what is discussed: 1. INTRODUCTION, 2. BACKGROUND, 3. INITIAL PROJECT SELECTION CRITERIA, 4. TRAFFIC, 5. STRUCTURAL ASSESSMENT, 6. OVERLAY THICKNESS DESIGN, 7. INITIAL STRUCTURAL SUPPORT, 8. PROJECT LENGTH, 9. CURING, 10. UTILITIES, 11. SURFACE TREATMENTS, 12. PAVING FABRICS, GEOSYNTHETICS AND CRACK SEAL, 13. PATCHES, 14. FINAL PROJECT SELECTION, 15. ECONOMIC ASSESSMENT, 16. SUMMARY, 17. SIGNIFICANT IN-PLACE RECYCLING RESOURCES, 18. REFERENCES.
In-depth Study of Cold In-place Recycled Pavement Performance: Construction and inspection manual
Author: Todd V. Scholz
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 58
Book Description
Publisher:
ISBN:
Category : Pavements, Asphalt
Languages : en
Pages : 58
Book Description