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Cold In Place Recycling Cir
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Book Synopsis Practice and Performance of Cold In-place Recycling and Cold Central Plant Recycling by : Mary Stroup-Gardiner
Download or read book Practice and Performance of Cold In-place Recycling and Cold Central Plant Recycling written by Mary Stroup-Gardiner and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis Comparing Cold In-place Recycling (CIR) and Cold In-place Recycling with Expanded Asphalt Mixture (CIREAM) by : Janki Bhavsar
Download or read book Comparing Cold In-place Recycling (CIR) and Cold In-place Recycling with Expanded Asphalt Mixture (CIREAM) written by Janki Bhavsar and published by . This book was released on 2015 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold Mix Asphalt (CMA) is used in several rehabilitation techniques, which uses 100% Reclaimed Asphalt Pavement (RAP), thus making it a sustainable product in the industry. Using CMA for rehabilitation decreases the energy consumption and greenhouse gas emissions. In Ontario, it has been implemented over the past 17 years. There are two main techniques used for CMA: Cold In-Place Recycling (CIR) and Cold In-Place Recycling with Expanded Asphalt Mixture (CIREAM). It is necessary to determine the performance of these techniques in order to determine the age of the pavement and expand their applications. There is a lack of laboratory and field performance information in Ontario for these two techniques. Thus, in this study, laboratory investigation was carried out to establish and compare the material performance of CIR and CIREAM. In addition, a field study was conducted which involved the evaluation of several road sections which have used CIR and CIREAM techniques. For this project, the test material was collected from road sections in Ontario, thus, this study was focused on CIR and CIREAM applications in Ontario and tests were based on standards followed by the province. Although the study was conducted for Ontario, the methodology may be applied outside of Ontario with similar climate conditions. However, the results would vary based on the type of material used. The laboratory study included testing for the overall stiffness, tensile strength, and fatigue behavior of the test samples to simulate their long-term performance. RAP was extracted from southern and northern parts of Ontario to make the test samples. A curing duration test was conducted using the dynamic modulus test apparatus. This test was done to determine a curing time of CIR samples in the laboratory which provided the best stiffness. For the stiffness test, sample mixes were constructed with varying percentages of asphalt cement (AC). From these mixes, the best performing mix was chosen based on its workability, rutting resistance and overall stiffness. The fatigue and tensile strength tests were conducted using the optimal mix chosen from the stiffness test and the samples were cured according to the results from the curing duration test. From the curing duration test, it was concluded that curing the CIR samples for 14 days after compaction gave a higher stiffness to the mix. For the CIR mixes using southern Ontario RAP, the mix with 3.2%AC performed well in comparison to the other mixes. The CIREAM mixes with varying percentages of AC had an overall similar performance. The fatigue testing showed that both CIR and CIREAM samples had similar fatigue resistance. The TSRST tests showed that CIR samples exhibited more shrinkage in comparison to CIREAM and they had higher tensile stresses at failure. The dynamic modulus testing of the CIR samples using northern Ontario RAP showed no statistically significant differences between the mixes. The gradation of the RAP used had a large impact on the stiffness and workability of the sample mixes and their performance. The field study included road sections with varying roadway and pavement attributes. Data was collected from various municipalities which included the City of Waterloo, County of Peterborough, Region of Northumberland, York Region, Haldimand County, County of Perth, County of Wellington, and the united counties of Stormont, Dundas and Glengarry, along with the Ministry of Transportation Ontario (MTO). This data highlighted the limits of all road sections which had implemented CIR or CIREAM within the municipalities. Approximately 200 road sections were identified which had used CIR or CIREAM techniques. These sections were visually inspected in three different municipalities; specifically the City of Waterloo, Perth County, and the united counties of Stormont, Dundas and Glengarry. From the visual inspections large amounts of deteriorations were observed where greater number of trucks, poor drainage and low speeds were prevalent. Field data evaluation showed no significant effect on physical condition, PCI or rut depth of the roadway due to age, AADT or AADTT, respectively. To date, these techniques are used on low volume roadways but there is also an opportunity to expand to higher volume roadways to promote sustainable use of recycled asphalt. These techniques are sustainable due to their use of 100% recycled aggregates and low energy consumption. Thus, by closing the research gap on their performance information, it would help broaden their application.
Download or read book Cold In-place Recycling (CIR). written by and published by . This book was released on 1991 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cold In-place Recycling and Full-depth Recycling with Asphalt Products (CIR & FDRwAP) by : Marshall R. Thompson
Download or read book Cold In-place Recycling and Full-depth Recycling with Asphalt Products (CIR & FDRwAP) written by Marshall R. Thompson and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the RILEM International Symposium on Bituminous Materials by : Hervé Di Benedetto
Download or read book Proceedings of the RILEM International Symposium on Bituminous Materials written by Hervé Di Benedetto and published by Springer Nature. This book was released on 2021-09-25 with total page 1806 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in bituminous materials and structures and asphalt pavement technology, as presented by leading international researchers and engineers at the RILEM International Symposium on Bituminous Materials (ISBM), held in Lyon, France on December 14-16, 2020. The symposium represents a joint effort of three RILEM Technical Committees from Cluster F: 264-RAP “Asphalt Pavement Recycling”, 272-PIM “Phase and Interphase Behaviour of Bituminous Materials”, and 278-CHA “Crack-Healing of Asphalt Pavement Materials”. It covers a diverse range of topics concerning bituminous materials (bitumen, mastics, mixtures) and road, railway and airport pavement structures, including: recycling, phase and interphase behaviour, cracking and healing, modification and innovative materials, durability and environmental aspects, testing and modelling, multi-scale properties, surface characteristics, structure performance, modelling and design, non-destructive testing, back-analysis, and Life Cycle Assessment. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster new multidisciplinary collaborations.
Book Synopsis In-depth Study of Cold In-place Recycled Pavement Performance: Construction and inspection manual by : Todd V. Scholz
Download or read book In-depth Study of Cold In-place Recycled Pavement Performance: Construction and inspection manual written by Todd V. Scholz and published by . This book was released on 1990 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Cold Recycling of Asphalt Concrete Pavement for Professional Engineers by : J. Paul Guyer
Download or read book An Introduction to Cold Recycling of Asphalt Concrete Pavement for Professional Engineers written by J. Paul Guyer and published by Guyer Partners. This book was released on 2022-12-27 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Accelerated Pavement Testing to Transport Infrastructure Innovation by : Armelle Chabot
Download or read book Accelerated Pavement Testing to Transport Infrastructure Innovation written by Armelle Chabot and published by Springer Nature. This book was released on 2020-08-25 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume gathers the latest advances, innovations, and applications in the field of accelerated pavement testing (APT), presented at the 6th International Conference on Accelerated Pavement Testing, in Nantes, France, in April 2022. Discussing APT, which involves rapid testing of full-scale pavement constructions for structural deterioration, the book covers topics such as APT facilities, APT of asphalt concrete and sustainable/innovative materials, APT for airfield pavements, testing of maintenance and rehabilitation solutions, testing of smart and multi-functional pavements, data analysis and modeling, monitoring and non-destructive testing, and efficient means of calibrating/developing pavement design methods. Featuring peer-reviewed contributions by leading international researchers and engineers, the book is a timely and highly relevant resource for materials scientists and engineers interested in determining the performance of pavement structures during their service life (10+ years) in a few weeks or months.
Book Synopsis Current Practice of Cold In-place Recycling (CIR) of Asphalt Pavements by : Leonard E. Wood
Download or read book Current Practice of Cold In-place Recycling (CIR) of Asphalt Pavements written by Leonard E. Wood and published by . This book was released on 1988 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superpave Mix Design by : Asphalt Institute
Download or read book Superpave Mix Design written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Asphalt Cold Mix Manual by : Asphalt Institute
Download or read book Asphalt Cold Mix Manual written by Asphalt Institute and published by . This book was released on 2001-01-01 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 5th International Symposium on Asphalt Pavements & Environment (APE) by : Marco Pasetto
Download or read book Proceedings of the 5th International Symposium on Asphalt Pavements & Environment (APE) written by Marco Pasetto and published by Springer Nature. This book was released on 2019-08-29 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume highlights the latest advances, innovations, and applications in the field of asphalt pavement technology, as presented by leading international researchers and engineers at the 5th International Symposium on Asphalt Pavements & Environment (ISAP 2019 APE Symposium), held in Padua, Italy on September 11-13, 2019. It covers a diverse range of topics concerning materials and technologies for asphalt pavements, designed for sustainability and environmental compatibility: sustainable pavement materials, marginal materials for asphalt pavements, pavement structures, testing methods and performance, maintenance and management methods, urban heat island mitigation, energy harvesting, and Life Cycle Assessment. The contributions, which were selected by means of a rigorous international peer-review process, present a wealth of exciting ideas that will open novel research directions and foster multidisciplinary collaboration among different specialists.
Book Synopsis Evaluation of Cold In-place Recycling by : Stephen Alan Cross
Download or read book Evaluation of Cold In-place Recycling written by Stephen Alan Cross and published by . This book was released on 1995 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kansas has many miles of thermally cracked roads primarily in the western one-half of the State. Rehabilitation with conventional hot mix asphalt overlays and hot recycling have not given the service life expected before the existing cracks reflect through the pavement. Since 1986, the Kansas Department of Transportation has been utilizing cold in-place recycling (CIR) with an emulsified asphalt as an additive as a cost effective alternative for rehabilitation of thermally cracked low volume pavements. Field performance of the final product appears to have more variation than desirable with an expected life of three to five years. The results of a two year study indicate that the material properties of the locally available aggregates are poor which results in low strength of the CIR mixes. In addition, the in-place air voids of the wearing surface were high and had an adverse effect on the performance of CIR mixes.
Book Synopsis Long Term Performance Evaluation of Cold In-place Recycling (CIR) Technique in Nevada by : Selvaratnam Sanjeevan
Download or read book Long Term Performance Evaluation of Cold In-place Recycling (CIR) Technique in Nevada written by Selvaratnam Sanjeevan and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold in-place recycling (CIR) is one of the commonly used rehabilitation technique for asphalt pavements in Nevada. Nevada Department of Transportation (NDOT) has long been using CMS-2S emulsion for CIR projects and recently has introduced Reflex emulsion and PASS emulsion for CIR. A difference in the performance of the CIR with changing emulsion technology has been observed which warranted the need for this study to assess the long-term performance of CIR pavements throughout Nevada. The long term performance of 67 CIR projects was evaluated in this study. The evaluated CIR projects were divided based on the rehabilitation type and then sub-divided based on the emulsion technology. Performances of the various projects were analyzed by individual distresses such as longitudinal cracking, fatigue cracking, transverse cracking, block cracking, roughness and rutting using NDOT's pavement management system data. In addition, overall condition of the pavement was evaluated using PCI values. A statistical approach called principal component analysis also used to evaluate the effectiveness of CIR in Nevada. The study revealed that CIR followed by a HMA overlay and a surface treatment performed much better on high volume roads than CIR with surface treatment on low volume roads. Transverse and longitudinal cracking were the two major types of distresses in CIR pavements. About 50% of the pavements constructed with HMA overlay and surface treatment and 95% of the pavements constructed with only surface treatment experienced transverse cracking during their service life. About 30% of the pavements constructed with HMA overlay and surface treatment and 70% of the pavements constructed with only surface treatment experienced longitudinal cracking. The CIR technology with HMA overlay and surface treatment significantly improved the rutting resistance and roughness of the pavement. The climatic condition, CIR layer thickness, and surface treatment types were not found to affect the performance of CIR roads. The CMS-2S projects without HMA overlay and 1.5 to 2.5 inches HMA overlay were predicted to reach a PCI value of 60 for rehabilitation 15 years after construction. The CMS-2S projects constructed with 3 to 4 inches of HMA overlay performed excellent up to 9 years and expected to last more than 20 years before rehabilitation. The CIR with CMS-2S and PASS emulsions constructed with surface treatment were predicted to reach a PCI level of 60 after 15 and 19 years, respectively. However, Reflex emulsion was predicted to be due for rehabilitation only after 6 years from construction.
Book Synopsis Experimental Cold In-place Recycling with Hydrated Lime by : Stephen A. Cross
Download or read book Experimental Cold In-place Recycling with Hydrated Lime written by Stephen A. Cross and published by . This book was released on 1997 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Kansas Department of Transportation (KDOT) uses cold in-place recycling (CIR) for approximately 120 to 160 km of pavement a year as a part of its 1-R maintenance program. Originally KDOT used asphalt emulsions as the additive in CIR mixtures, but on the basis of performance concerns it currently uses type C fly ash. Recent research indicates that the use of CIR with asphalt emulsion and hydrated lime, introduced as hot slurry, provides improved performance. KDOT constructed two test sections on US-283 using type C fly ash and cationic slow set (CSS-1) with hot lime slurry. Samples of the materials were obtained and laboratory evaluations undertaken to evaluate the performance of CIR with hot lime slurry. Two additional mixing grade asphalt emulsions, cationic medium set (CMS-1) and high float (HFE-150), were evaluated as well. Laboratory samples were tested for tensile strength, moisture sensitivity, and resilient modulus. Laboratory compacted samples were tested for rutting resistance and moisture damage by using the asphalt pavement analyzer (Georgia rut tester). Results indicate that the use of hot lime slurry resulted in an improvement in material properties that affect the performance of CIR pavements, regardless of the emulsion used, and that CIR with hot lime slurry could be an alternative to the use of type C fly ash.
Book Synopsis Reducing Sample Size for Cold In-Place Recycling Design and Testing by : Alex Jackson
Download or read book Reducing Sample Size for Cold In-Place Recycling Design and Testing written by Alex Jackson and published by . This book was released on 2015 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many current methods of designing and testing cold in-place recycled (CIR) asphalt are undesirable because they require large amounts of material and significant preparation. In an effort to lessen the cost and time of materials testing, this research utilizes several different methods of small scale testing of creep stiffness. These methods include using a discovery hybrid rheometer (DHR) and a three point bending test to find the creep stiffness of emulsion based CIR. The new testing methods used samples on the scale of up to a hundredth the size of what the traditional methods of testing require. The two smaller scale tests were compared to the traditional indirect tension test (IDT) testing. In order to fully evaluate the two reduced sample size test methods, this research observed the effect of gradation, temperature, emulsifier type, and recycled asphalt pavement (RAP) content on creep stiffness. If successful, the use of these new test methods could significantly decrease the damage done to roads, and reduce the cost of material management incurred through the quality control testing methods for pavement. Results showed very good correlation between DHR and IDT testing with a proportional difference between the samples. The standard deviations between the DHR and IDT testing were 18.6 % and 19.2 % of the mean values, respectively, indicating similar accuracies of tests. The tests were also able to distinguish between types of material. The proportional difference between the IDT and DHR is expected and is due to the difference of sample and loading configuration. With the proper shift factor, it is suggested that the DHR can provide similar results with significantly less material versus the traditional IDT test.
Book Synopsis Optimizing Cold In-place Recycling (CIR) Applications Through Fracture Energy Performance Testing by : Daniel E. Wegman
Download or read book Optimizing Cold In-place Recycling (CIR) Applications Through Fracture Energy Performance Testing written by Daniel E. Wegman and published by . This book was released on 2016 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold In-place Recycling (CIR) is pulverizing and rebinding existing Hot Mix Asphalt (HMA) pavements with bituminous and/or chemical additives without heating to produce a restored pavement layer. This process has become a desired rehabilitation alternative for cost, environmental, and performance advantages compared to standard practices. The process utilizes a train of equipment with either volumetric or weight control. It also utilizes various stabilization materials including emulsion, cement, combinations of emulsion/cement, and foamed asphalt. Performance-based laboratory tests to capture fracture energy of materials have shown they can correlate to field performance quite well. These tests offer an excellent opportunity to differentiate between processes and materials used in CIR for characterization and development of a performance-based specification. In this study, the performance of CIR using four different stabilization (rebinding) materials of Engineering Emulsion, High Float Emulsion (HFMS-2s), Commodity Emulsion (CSS-1) with Cement, and Foamed asphalt are compared using a newly developed testing method called Fracture Index Value for Energy (FIVE). This test is performed on notched Semi-Circular Bending (SCB) specimens by controlling the crack mouth opening displacement (CMOD) rate. The FIVE test is found to be a practical easy to perform test that is able to compare CIR material low temperature characteristics. In this study, the FIVE test first was verified against Disc-shaped Compact Tension (DCT) test results and then was applied on the four study mixtures. Furthermore, the FIVE test results went through a validation process with inter-lab comparisons by three different testing labs of Braun Intertec, American Testing Engineering, and the Minnesota Department of Transportation (MnDOT).
