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Performance Evaluation Of Various Hot Mixed Asphalt Rehabilitation Strategies
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Book Synopsis Performance Evaluation of Various Hot Mixed Asphalt Rehabilitation Strategies by : Christopher Don Schmidt
Download or read book Performance Evaluation of Various Hot Mixed Asphalt Rehabilitation Strategies written by Christopher Don Schmidt and published by . This book was released on 2008 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Performance Evaluation of In-place Recycled Hot Mix Asphalt as Unbound Granular Material by :
Download or read book Comprehensive Performance Evaluation of In-place Recycled Hot Mix Asphalt as Unbound Granular Material written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A promising pavement rehabilitation strategy that is of interest to state highway agencies and local governments involves the in-place pulverization of failed hot mix asphalt (HMA) pavements and re-use of the pulverized material as a granular base material. Advantages of this technique include a reduction in the use of virgin aggregate, a reduction in the amount of construction traffic, and removal of the potential for reflective cracking from the existing cracked pavement layers through the new HMA surface. However, the performance of this technique has not been comprehensively evaluated, and, in particular, permanent deformation characteristics. In this thesis, four pilot projects in northeastern California were used to evaluate the pulverized material and this rehabilitation strategy. The characteristics and performance of the pulverized material were evaluated by comprehensive laboratory and field testing, and analyses. Based on the multistage repeated load triaxial test results, the shakedown limits of the pulverized material were estimated and compared with the stress states calculated from the cross-anisotropic finite element analyses based on real traffic and climate data. A recursive-incremental damage model was used to predict permanent deformation of the pulverized base layer over the long term and to compare it with that of typical aggregate base material. Based on the comprehensive laboratory testing, field testing, and analyses, the pulverized material was found to be generally stiffer than typical aggregate base material, possibly due to better aggregate shape than that found in typical aggregate base material. The pulverized mateiral has less permanent deformation resistance at low stress levels but greater resistance at higher stress levels than typical granular material used in California. Possible reasons for the lower permanent deformation resistance at low stress levels might be the laboratory compaction method and that the recycled HMA in the pulverized material undergoes additional breakdown under initial loading since coarse fractions of the pulverized materials are greater than that of the comparison virgin aggregate base. Overall, the performance benefits of this rehabilitation strategy make it a viable option for flexible pavement rehabilitation.
Book Synopsis Performance Evaluation of Various HMA Rehabilitation Strategies by :
Download or read book Performance Evaluation of Various HMA Rehabilitation Strategies written by and published by . This book was released on 2008 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Various Hot Mix Asphalt Pavement Thicknesses Over Rubblized Concrete Pavement by : Irene K. Battaglia
Download or read book Evaluation of Various Hot Mix Asphalt Pavement Thicknesses Over Rubblized Concrete Pavement written by Irene K. Battaglia and published by . This book was released on 2010 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Warm Mix Asphalt Technology for Urban Pavement Rehabilitation Projects by : Salvatory Materu
Download or read book Evaluation of Warm Mix Asphalt Technology for Urban Pavement Rehabilitation Projects written by Salvatory Materu and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Warm Mix Asphalt (WMA) technology has the capability of lowering the temperature at which the asphalt is mixed and compacted by 30°C or more without compromising the performance of asphalt pavement. The reduced difference between asphalt mix and ambient temperature results in a lower cooling rate thus allows for long haul, sufficient compaction time and late season projects compared to the conventional Hot Mix Asphalt (HMA). In northern climate, asphalt paving season is relatively short and paving is often done late in the season when weather conditions are less than ideal. The potential benefit of WMA, among others, is an extended paving season for the City of Winnipeg. Reduction in production temperature also comes with other positive impacts both economically and environmentally. The objective of this study is to evaluate the installation of WMA, compile experiences with this technology and evaluate their effects on construction methods and performance. The study further attempts to evaluate the effectiveness of the WMA chemical additives and its dosage rate as liquid anti-strip agents on the properties of WMA mixtures through field and laboratory testing programs. In addition to the overall effectiveness of WMA, the study aimed to evaluate its economic cost relative to Hot Mix Asphalt (HMA). A chemical additive was used at three different dosages (0.3, 0.5 and 0.7 percent by weight of asphalt cement). The additive has the ability to improve mixing, aggregate coating, workability, compaction and adhesion with no change in materials or job mix formula required. The study showed that WMA could be successfully placed using conventional HMA paving practices and procedures. Among the different additive dosages used, 0.5% had a better overall performance. The moisture sensitivity tests indicated the highest Tensile Strength Ratio (TSR) at this dosage, suggesting the lowest moisture damage susceptibility. All four mixtures had low rutting resistance potential with no significant difference among them. The WMA showed a higher cracking resistance compared to HMA. The WMA price was between 2% to 11% higher than conventional HMA including the costs of additional testing as well as the WMA additives.
Book Synopsis Evaluation of Pavement Rehabilitation Strategies on Route 165 and Prediction Performance by : Kathleen M. Wilson
Download or read book Evaluation of Pavement Rehabilitation Strategies on Route 165 and Prediction Performance written by Kathleen M. Wilson and published by . This book was released on 2016 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Warm-mix Asphalt Study by : David John Jones
Download or read book Warm-mix Asphalt Study written by David John Jones and published by . This book was released on 2013 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Evaluation of Aged Asphalt Mix for Hot In-Place Recycling by : Bin Yu
Download or read book Performance Evaluation of Aged Asphalt Mix for Hot In-Place Recycling written by Bin Yu and published by . This book was released on 2015 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite increasing application, limited knowledge is known of in situ and laboratory properties of asphalt mixes placed through hot in-place recycling (HIR). This study conducted a preliminary investigation to inspect the individual and joint effects of binder (aged or rejuvenated) and gradation (decayed or normal) on respective performance indicators. Three mixes were designed and the properties were determined, including mix A collected from aged asphalt pavement, mix B designed with the same gradation of mix A but using virgin materials, and mix C designed with the initial construction aggregate gradation of the aged pavement section using virgin materials. The experimental program was carried out at the binder/aggregate, mortar and mix levels. The binder property, aggregate quality, and gradation of mix A were changed compared to the initial design, and the proper dosage of rejuvenator is able to restore the binder properties largely except for ductility. Asphalt mortars of mixes A and B were prepared and submitted for repeated shear at constant height (RSCH) and frequency sweep at constant height (FSCH) tests and found that the former has a better rutting resistance in terms of the Gv (viscous component of creep stiffness) and complex shear modulus G*, whereas poorer low-temperature and fatigue performances in terms of the glassy modulus G*g and NP20. At the mix level, master curves of the three mixes were developed by dynamic modulus tests and revealed disparate viscoelastic properties, of which mix C is mostly desired. Binder aging and gradation decay work contradictorily, determining flow number test results so that mixes A and C have close and higher flow number values than mix B. Fatigue and low-temperature fracture properties were evaluated by semi-circular bending tests and indicated the poorest performance for mix A because of binder aging and gradation decay.
Book Synopsis Performance Evaluation of Warm Mix Asphalt Mixtures and Their Incorporation Into the AASHTOWare Pavement ME Program by : Yizhuang Wang
Download or read book Performance Evaluation of Warm Mix Asphalt Mixtures and Their Incorporation Into the AASHTOWare Pavement ME Program written by Yizhuang Wang and published by . This book was released on 2014 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Performance of Whitetopping Pavement as a Rehabilitation Strategy by : Xiaojun Li
Download or read book Evaluation of Performance of Whitetopping Pavement as a Rehabilitation Strategy written by Xiaojun Li and published by . This book was released on 2010 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hot Mix Asphalt Pavement Evaluation and Rehabilitation by : Max G. Grogg
Download or read book Hot Mix Asphalt Pavement Evaluation and Rehabilitation written by Max G. Grogg and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Framework for Development of Performance-related Specifications for Hot-mix Asphaltic Concrete by : David A. Anderson
Download or read book Framework for Development of Performance-related Specifications for Hot-mix Asphaltic Concrete written by David A. Anderson and published by Transportation Research Board. This book was released on 1990 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Evaluation of Warm Mix Asphalt Mixtures Incorporating Reclaimed Asphalt Pavement by : Brian Hill
Download or read book Performance Evaluation of Warm Mix Asphalt Mixtures Incorporating Reclaimed Asphalt Pavement written by Brian Hill and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sustainability is a cornerstone of today0́9s engineering world. Warm mix asphalt (WMA) and reclaimed asphalt pavement (RAP) are the most prominent sustainable materials in asphalt concrete pavements. WMA is a not a new concept, however new innovations and increased usage of WMA has been spurred by the increased focus on sustainable infrastructure systems. WMA enables reduced production temperatures through the use of wax, water, or other chemical packages. The effects of reduced production temperatures include fuel use and emissions reductions, improved compaction, and possible RAP concentration increases. RAP is the primary recycled product of the aged asphalt concrete pavements and its use leads to reductions in virgin aggregate and asphalt demand. However, significant performance issues can stem from the individual integration of WMA or RAP materials in asphalt concrete. In particular, WMA technologies can increase moisture and rutting susceptibility while RAP significantly increases the stiffness of the resulting mixture. Consequently, quality performance of sustainable asphalt pavements may require the combined use of WMA and RAP to produce mixtures with sufficient stiffness and moisture and fracture resistance. This study evaluates the potential of WMA technologies and their integration with RAP. Initially, an extensive literature review was completed to understand the advantages, disadvantages, and past field and lab performance of WMA and RAP mixtures. Rotational viscometer and bending beam rheometer tests were then used to evaluate Sasobit, Evotherm M1, and Advera WMA modified and unmodified binders. Finally, virgin and 45% RAP mixtures were designed and tested to examine the rutting, moisture, and fracture resistance of WMA and HMA mixtures. The results of this experiment provided several key observations. First, viscosity reductions may not be the primary cause for the availability of reduced production temperatures for WMA technologies. Second, WMA additive properties have a significant effect upon fracture, moisture, and rutting resistance. Furthermore, the addition of RAP to WMA mixtures improved the rutting and moisture sensitivity performance as characterized in the Hamburg and Tensile Strength Ratio testing procedures.
Book Synopsis Life and Cost Comparison of Three Rehabilitation Techniques on I-65 Between SR-2 and SR-114 by : Sedat Gulen
Download or read book Life and Cost Comparison of Three Rehabilitation Techniques on I-65 Between SR-2 and SR-114 written by Sedat Gulen and published by . This book was released on 2004-06-15 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pavement and Asset Management by : Maurizio Crispino
Download or read book Pavement and Asset Management written by Maurizio Crispino and published by CRC Press. This book was released on 2019-02-21 with total page 847 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pavement and Asset Management contains contributions from the World Conference on Pavement and Asset Management (WCPAM 2017, Baveno, Italy, 12-16 June 2017). For the first time, the European Pavement and Asset Management Conference (EPAM) and the International Conference on Managing Pavement Assets (ICMPA) were joining forces for a global event that aimed not only at academics and researchers, but also at practitioners, engineers and technicians dealing with everyday tasks and responsibilities related to transport infrastructures pavement and asset management. Pavement and Asset Management covers a wide range of topics, from emerging research to engineering practice, and is grouped under the following themes: - Data quality and monitoring - Economics, political and environmental management, strategies - Deterioration models - Key performance indicators - PMS-case studies - Design and materials - M&R treatments - LCA & LCCA - Risk and safety - Bridge and tunnel management - Smart infrastructure and IT Pavement and Asset Management will be valuable to academics and professionals interested and/or involved in issues related to transport infrastructures pavement and asset management.
Book Synopsis Hot Mix Asphalt Pavement Evaluation and Rehabilitation by :
Download or read book Hot Mix Asphalt Pavement Evaluation and Rehabilitation written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Focus written by and published by . This book was released on 1993 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
