Laboratory Characterization Of Asphalt Binders Containing A Chemical Based Warm Mix Asphalt Additive

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Laboratory Characterization of Asphalt Binders Containing a Chemical-Based Warm Mix Asphalt Additive

Author : Shivani Rani
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Laboratory Characterization of Asphalt Binders Containing a Chemical-Based Warm Mix Asphalt Additive by : Shivani Rani

Download or read book Laboratory Characterization of Asphalt Binders Containing a Chemical-Based Warm Mix Asphalt Additive written by Shivani Rani and published by . This book was released on 2020 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Different technologies, namely foamed asphalt, synthetic waxes, zeolites, and chemical additives, are used to produce warm mix asphalt (WMA). This study was undertaken to evaluate the effect of using different amounts of an amine-based chemical WMA additive on the rheology, performance grade (PG), and moisture-induced damage potential of an asphalt binder (PG 58-28). Superpave specifications were used to evaluate the rheological properties and PG of the asphalt binder. Also, a mechanistic approach-based on the surface free energy (SFE) method was used to evaluate the moisture-induced damage potential of the asphalt binder combined with commonly used aggregates in an asphalt mix. It was found that the dynamic viscosity of the asphalt binder was not significantly affected after blending it with the WMA additive. It was also observed that the Superpave high-temperature PG and the rutting factor did not reduce by an increase in the WMA additive content. However, the continuous low-temperature PG of the asphalt binder decreased with an increase in the amount of WMA additive. Furthermore, it was found that the fatigue resistance increased after blending the binder with the WMA additive. The SFE results of the asphalt binder revealed that the WMA additive used in this study reduced the moisture-induced damage potential of the asphalt mixes. However, the extent of this improvement was found to largely depend on the aggregate type. The outcomes of this study are expected to help better understand the influence of amine-based chemical WMA additives on rheological and long-term performance of asphalt mix.

Characteristics of a Surfactant Produced Warm Mix Asphalt Binder and Workability of the Mixture

Author : Xiaoyan Li
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Characteristics of a Surfactant Produced Warm Mix Asphalt Binder and Workability of the Mixture by : Xiaoyan Li

Download or read book Characteristics of a Surfactant Produced Warm Mix Asphalt Binder and Workability of the Mixture written by Xiaoyan Li and published by . This book was released on 2015 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Warm mix asphalt (WMA) technologies significantly reduced the mixing and compaction temperatures in the construction of asphalt pavement, which thus lowered the energy consumption and gas emissions. Different types of WMA additives have been developed and applied in the past decade. However, there are still several concerns associated with the application of WMA technologies. The objective of this study was to address the characteristics of WMA binder produced using a surfactant additive namely, ADDITIVE-A. Two binders, 70 penetration grade (70#) asphalt and 90 penetration grade (90#) asphalt were applied as the base binder to produce the WMA in this study. A portable workability device was presented in this paper to evaluate the torque values of WMAs since the workability is the main property to determine the mixing and compaction temperatures of WMA and a laboratory workability test has yet to be developed. The proper mixing and compaction temperatures were also obtained based on the proposed test. A series of tests, including penetration, softening point, ductility and viscosity of different WMA additive concentrations (0, 0.3, 0.5, 0.7, and 0.9 % by the weight of asphalt binder) were conducted to investigate the mechanisms of the surfactant on asphalt binder. The contact angles of WMA binders were tested to investigate the modification mechanism of surfactant additive on asphalt binder. The laboratory tests indicate that the surfactant additive (ADDITIVE-A) makes the asphalt binder softer, more temperature sensitive, and having better low temperature property. However, the surfactant does not show a significant impact on the high temperature property and viscosity. The addition of the surfactant additive increased the workability of asphalt mixture and decreased the mixing and compaction temperatures of asphalt mixture. Based on the workability test results, the 0.7 % concentrations of the ADDITIVE-A provided a more obvious effect to reduce the production temperature of asphalt mixture.

Durability and Performance Characteristics of Hot Mix Asphalt Containing Polymer Additives

Author : Robert Y. Liang
Publisher :
ISBN 13 :
Total Pages : 286 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Durability and Performance Characteristics of Hot Mix Asphalt Containing Polymer Additives by : Robert Y. Liang

Download or read book Durability and Performance Characteristics of Hot Mix Asphalt Containing Polymer Additives written by Robert Y. Liang and published by . This book was released on 2001 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ohio Department of Transportation has adopted the hot mix asphalt concrete containing polymer modifiers for use in the interstate highway pavement. Among the various reasons cited for the adoption of polymer modifiers are the favorable field experiences by ODOT, extensive literatures reporting enhanced performance, such as rutting resistance, low temperature thermal cracking resistance, and possibly fatigue endurance. However, despite these favorable findings, there are still cases involving premature failure of hot mixtures containing polymer modifiers. Concerns regarding optimum polymer content, compatibility between polymer additives and asphalt cement, proper mixing and compaction procedure remain to be resolved. Furthermore, performance based specifications to ensure production of desirable final asphalt concrete product require additional development. Questions regarding the suitability of Superpave binder testing procedures for the polymer-modified binders need to be clarified.

A Comparison of Warm Asphalt Binder Aging with Laboratory Aging Procedures

Author : Tejash Gandhi
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis A Comparison of Warm Asphalt Binder Aging with Laboratory Aging Procedures by : Tejash Gandhi

Download or read book A Comparison of Warm Asphalt Binder Aging with Laboratory Aging Procedures written by Tejash Gandhi and published by . This book was released on 2010 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Warm asphalt has been gaining increasing popularity in recent years; however there are several characteristics about warm asphalt that are still unknown. While several studies have been conducted to study the performance of warm asphalt mixtures, aging characteristics of warm mix asphalt (WMA) binders are not known in great detail. This paper presents the results of a limited study to evaluate the aging characteristics of two WMA binders artificially aged in the rolling thin film oven (RTFO) and the pressure aging vessel and comparing them with binder extracted from freshly prepared and artificially aged warm asphalt mixtures. RTFO aging was performed at 163°C and a lower temperature to simulate warm asphalt aging. Tests on binders aged in the laboratory and binders extracted from freshly mixed and aged mixtures indicated that the WMA binders extracted from WMA mixtures had significantly lower viscosities and G*/sin ? compared to binders extracted from hot mix asphalt (HMA) and binders aged in the RTFO at 163°C (325°F). This indicates that the lower mixing and compaction temperatures reduce the aging of the warm asphalt binders. Also, binders extracted from WMA had significantly lower creep stiffness values and significantly higher m-values compared to warm asphalt binders aged in the RTFO at 163°C (325°F) and binders extracted from HMA. Binders containing WMA additives did not have higher G* sin ? values, indicating that the warm asphalt additives do not negatively affect the fatigue properties of the binders. Gel permeation chromatography analysis indicated that the addition of the warm asphalt additives did not have any significant effect on the %LMS of the binders used in this study.

Proceedings of the 5th International Symposium on Asphalt Pavements & Environment (APE)

Author : Marco Pasetto
Publisher : Springer Nature
ISBN 13 : 3030297799
Total Pages : 503 pages
Book Rating : 4.0/5 (32 download)

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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.

Laboratory Characterization of Recycled and Warm Mix Asphalt for Enhanced Pavement Applications

Author : Rouzbeh Ghabchi
Publisher :
ISBN 13 :
Total Pages : 482 pages
Book Rating : 4.:/5 (891 download)

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Book Synopsis Laboratory Characterization of Recycled and Warm Mix Asphalt for Enhanced Pavement Applications by : Rouzbeh Ghabchi

Download or read book Laboratory Characterization of Recycled and Warm Mix Asphalt for Enhanced Pavement Applications written by Rouzbeh Ghabchi and published by . This book was released on 2014 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characteristics of Asphalt Binders

Author :
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Characteristics of Asphalt Binders by :

Download or read book Characteristics of Asphalt Binders written by and published by . This book was released on 1996 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

DSC/HISS Modeling Applications for Problems in Mechanics, Geomechanics, and Structural Mechanics

Author : Chandrakant S. Desai
Publisher : CRC Press
ISBN 13 : 1000966801
Total Pages : 459 pages
Book Rating : 4.0/5 (9 download)

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Book Synopsis DSC/HISS Modeling Applications for Problems in Mechanics, Geomechanics, and Structural Mechanics by : Chandrakant S. Desai

Download or read book DSC/HISS Modeling Applications for Problems in Mechanics, Geomechanics, and Structural Mechanics written by Chandrakant S. Desai and published by CRC Press. This book was released on 2023-11-30 with total page 459 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the mechanical behavior of solids and contacts (interfaces and joints) is vital for the analysis, design, and maintenance of engineering systems. Materials may simultaneously experience the effects of many factors such as elastic, plastic, and creep strains; different loading (stress) paths; volume change under shear stress; and microcracking leading to fracture and failure, strain softening, or degradation. Typically, the available models account for only one factor at a time; however, the disturbed state concept (DSC) with the hierarchical single-surface (HISS) plasticity is a unified modeling approach that can allow for numerous factors simultaneously, and in an integrated manner. DSC/HISS Modeling Applications for Problems in Mechanics, Geomechanics, and Structural Mechanics provides readers with comprehensive information including the basic concepts and applications for the DSC/HISS modeling regarding a wide range of engineering materials and contacts. Uniformity in format and content of each chapter will make it easier for the reader to appreciate the potential of using the DSC/HISS modeling across various applications. Features: • Presents a new and simplified way to learn characterizations and behaviors of materials and contacts under various conditions • Offers modeling applicable to several different materials including geologic (clays, sands, rocks), modified geologic materials (structured soils, overconsolidated soils, expansive soils, loess, frozen soils, chemically treated soils), hydrate-bearing sediments, and more.

Laboratory Evaluation of Warm Mix Asphalt Prepared Using Foamed Asphalt Binders

Author : Ayman W. Ali
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (898 download)

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Book Synopsis Laboratory Evaluation of Warm Mix Asphalt Prepared Using Foamed Asphalt Binders by : Ayman W. Ali

Download or read book Laboratory Evaluation of Warm Mix Asphalt Prepared Using Foamed Asphalt Binders written by Ayman W. Ali and published by . This book was released on 2010 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Warm Mix Asphalt (WMA) is a name given to different technologies that have the common purpose of reducing the viscosity of the asphalt binders. This reduction in viscosity offers the advantage of producing asphalt-aggregate mixtures at lower mixing and compaction temperatures, and subsequently reducing energy consumption and pollutant emissions during asphalt mix production and placement. WMA technologies can be classified into two groups. The first group reduces the asphalt binders' viscosity through the addition of organic or chemical additives, while the second group reduces the viscosity of the asphalt binders through the addition of water. The latter has received increased attention in Ohio since it does not require the use of costly additives. In spite of the above-mentioned advantages for WMA mixtures, many concerns have been raised regarding the susceptibility of this material to moisture-induced damage and permanent deformation due to the reduced temperature level used during WMA production. Therefore, this study was conducted to develop a laboratory procedure to produce WMA mixtures prepared using foamed asphalt binders (WMA-FA), and to evaluate their performance in comparison to conventional Hot Mix Asphalt (HMA). This study involved two types of aggregates (natural gravel and crushed limestone) and two types of asphalt binders (PG 64-22 and PG 70-22M). A laboratory scale asphalt binder foaming device called WLB10, produced by Wirtgen, Inc., was used to foam the asphalt binders. The aggregate gradation met the Ohio Department of Transportation (ODOT) Construction and Materials Specification (C&MS) requirements for Item 441 Type 1 Surface Course for Medium Traffic. The resistance of WMA-FA and HMA mixtures to moisture-induced damage was measured using AASHTO T-283, and the resistance to permanent deformation was measured using the Asphalt Pavement Analyzer (APA) and the Simple Performance Test (SPT). Based on the experimental test results and the subsequent analyses findings, the following conclusions were made: [1] WMA-FA mixtures are more workable and easily compacted than HMA mixtures even though they are produced at lower mixing and compaction temperatures; [2] WMA-FA mixtures are slightly more susceptible to moisture damage than HMA mixtures. However, the difference is statistically insignificant. Therefore, if designed properly, both mixtures are expected to meet ODOT's minimum TSR requirement for the proposed traffic level; [3] WMA-FA mixtures, especially those prepared using gravel aggregates and unmodified asphalt binders are more prone to rutting than the corresponding HMA mixtures. Therefore, it is recommended to include the APA test as part of the WMA mix design procedure to ensure satisfactory performance for rutting.

Hot Mix Asphalt Materials, Mixture Design, and Construction

Author :
Publisher :
ISBN 13 :
Total Pages : 720 pages
Book Rating : 4.:/5 (91 download)

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Book Synopsis Hot Mix Asphalt Materials, Mixture Design, and Construction by :

Download or read book Hot Mix Asphalt Materials, Mixture Design, and Construction written by and published by . This book was released on 2009 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Short-term Laboratory Conditioning of Asphalt Mixtures

Author : David Newcomb
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Short-term Laboratory Conditioning of Asphalt Mixtures by : David Newcomb

Download or read book Short-term Laboratory Conditioning of Asphalt Mixtures written by David Newcomb and published by . This book was released on 2015 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report develops procedures and associated criteria for laboratory conditioning of asphalt mixtures to simulate short-term aging. The report presents proposed changes to the American Association of State Highway and Transportation Officials (AASHTO) R 30, Mixture Conditioning of Hot-Mix Asphalt (HMA), and a proposed AASHTO practice for conducting plant aging studies. The report will be of immediate interest to materials engineers in state highway agencies and the construction industry with responsibility for design and production of hot and warm mix asphalt.

Challenges and Innovations in Geomechanics

Author : Marco Barla
Publisher : Springer Nature
ISBN 13 : 3031128516
Total Pages : 597 pages
Book Rating : 4.0/5 (311 download)

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Book Synopsis Challenges and Innovations in Geomechanics by : Marco Barla

Download or read book Challenges and Innovations in Geomechanics written by Marco Barla and published by Springer Nature. This book was released on 2022-07-30 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the latest advances, innovations, and applications in the field of computational geomechanics, as presented by international researchers and engineers at the 16th International Conference of the International Association for Computer Methods and Advances in Geomechanics (IACMAG), held in Turin, Italy on August 30 - September 2, 2022. Contributions include a wide range of topics in geomechanics such as: laboratory and field testing, constitutive modelling, monitoring and remote sensing, multiphase modelling, reliability and risk analysis, surface structures, deep structures, dams and earth structures, natural slopes, mining engineering, earthquake and dynamics, soil-atmosphere interaction, ice mechanics, landfills and waste disposal, gas and petroleum engineering, geothermal energy, offshore technology, energy geostructures and computational rail geotechnics.

Special Mixture Design Considerations and Methods for Warm Mix Asphalt

Author :
Publisher : Transportation Research Board
ISBN 13 : 0309213738
Total Pages : 53 pages
Book Rating : 4.3/5 (92 download)

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Book Synopsis Special Mixture Design Considerations and Methods for Warm Mix Asphalt by :

Download or read book Special Mixture Design Considerations and Methods for Warm Mix Asphalt written by and published by Transportation Research Board. This book was released on 2012 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Report 714: Special Mixture Design Considerations and Methods for Warm-Mix Asphalt: A Supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt with Commentary presents special mixture design considerations and methods used with warm-mix asphalt. NCHRP Report 714 is a supplement to NCHRP Report 673: A Manual for Design of Hot-Mix Asphalt. All references to chapters in NCHRP Report 714 refer to the corresponding chapters in NCHRP Report 673.

Evaluation of Engineering Properties of Rubberized Laboratory Mixes Containing Warm Mix Additives

Author : Chandra K. Akisetty
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Evaluation of Engineering Properties of Rubberized Laboratory Mixes Containing Warm Mix Additives by : Chandra K. Akisetty

Download or read book Evaluation of Engineering Properties of Rubberized Laboratory Mixes Containing Warm Mix Additives written by Chandra K. Akisetty and published by . This book was released on 2010 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Warm mix asphalt (WMA) refers to technologies which allow a significant reduction of mixing and compaction temperatures of asphalt mixes. From previous studies, it is observed that warm mix additives work in different ways, either in reducing the viscosity of the asphalt binder or allowing better workability of the asphalt mix at lower temperatures through volume expansion in the binder. If the technologies of WMA are incorporated into rubberized asphalt mixes, which are generally produced and compacted at higher temperature than conventional mixes, it is possible to reduce the mixing and compaction temperatures of rubberized mixes to those of conventional mixes. This paper presents a limited study that characterizes the engineering properties of crumb rubber modifier (CRM) mixtures containing warm mix additives. Six CRM mixtures (two of control mixtures and four of warm mixtures) were prepared using two aggregate sources and two additives: Aspha-min® and Sasobit®. Evaluation of all mixtures included the following testing procedures: tensile strength ratio, asphalt pavement analyzer, resilient modulus, and resilient modulus after long-term oven aging. The results from this study showed that in general, there was no significant difference between the control and warm CRM mixtures for the properties evaluated in this study, indicating that the use of WMA technologies into CRM mixes is expected to have no negative effect on the mixture's engineering properties.

Binder Characterization and Evaluation: Test methods

Author :
Publisher :
ISBN 13 :
Total Pages : 220 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Binder Characterization and Evaluation: Test methods by :

Download or read book Binder Characterization and Evaluation: Test methods written by and published by . This book was released on 1994 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Evaluation of Warm Mix Additives for Use in Modified Asphalt Mixtures

Author : Corina Borroel Wong
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (842 download)

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Book Synopsis Evaluation of Warm Mix Additives for Use in Modified Asphalt Mixtures by : Corina Borroel Wong

Download or read book Evaluation of Warm Mix Additives for Use in Modified Asphalt Mixtures written by Corina Borroel Wong and published by . This book was released on 2011 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intention of this research effort is to evaluate the use of warm mix additives with typical polymer-modified and terminal blend tire rubber asphalt mixtures from Nevada and California. The research effort is broken into three phases that are intended to evaluate the impacts of warm mix additives with typical polymer-modified and terminal blend tire rubber asphalt mixtures from Nevada and California: moisture damage, performance characteristics, and mechanistic analysis. In Phase I of this research effort, mixture resistance to moisture damage was evaluated using the indirect tensile test and the dynamic modulus at multiple freeze-thaw cycles. Laboratory testing was conducted to address the following: (1) the impact of warm mix additive and reduced production temperatures on the moisture damage resistance of asphalt mixtures, (2) the impact of residual aggregate moisture on the moisture damage resistance of WMA mixtures, (3) the impact of warm mix additives on the moisture damage resistance of anti-strip treated WMA mixtures, and (3) the impact of long-term aging on strength gain and the moisture damage resistance of WMA mixtures. A total of one aggregate source, four warm mix asphalt technologies (Advera, Sasobit, Revix and Foaming) and three asphalt binder types (neat, polymer-modified and terminal blend tire rubber modified asphalt binders) typically used in both Nevada and California are being evaluated in this study. This thesis will only summarize the test results and findings of the Phase I of the study for two warm-mix additives: Advera and Sasobit. The evaluation of the other two technologies (i.e. Revix and Foaming) as well as the Phase II testing are still in progress and have not been completed.

Asphalt and Asphalt Mixtures

Author : Haitao Zhang
Publisher : BoD – Books on Demand
ISBN 13 : 1789847680
Total Pages : 132 pages
Book Rating : 4.7/5 (898 download)

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Book Synopsis Asphalt and Asphalt Mixtures by : Haitao Zhang

Download or read book Asphalt and Asphalt Mixtures written by Haitao Zhang and published by BoD – Books on Demand. This book was released on 2019-12-11 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, with the rapid development of the world transportation industry, the proportion of asphalt pavement in road engineering is increasing. Therefore, while the demand for asphalt and asphalt mixture is increasing, the quality requirements for materials are also improving. In particular, new materials and new technologies are constantly emerging, and the application technology, theory, and technical specifications of asphalt materials have made great progress.