Performance Evaluation Of Sbs Modified Asphalt With Different Anti Aging Additives

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Performance Evaluation of SBS Modified Asphalt with Different Anti-aging Additives

Author : Zhengang Feng
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Performance Evaluation of SBS Modified Asphalt with Different Anti-aging Additives by : Zhengang Feng

Download or read book Performance Evaluation of SBS Modified Asphalt with Different Anti-aging Additives written by Zhengang Feng and published by . This book was released on 2012 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of three different types of anti-aging additives (bumetrizole, octabenzone, and tinuvin770) on the physical and rheological properties of styrene butadiene styrene (SBS) modified asphalt were investigated by means of conventional physical properties tests and dynamic shear rheometer (DSR) tests. In order to evaluate the aging properties of different anti-aging additive/SBS modified asphalts, the thin film oven test and ultraviolet (UV) radiation test were performed, and different aging parameters were compared. The results show that the penetration, ductility, and softening point are increased, whereas the viscosity is decreased, with the addition of different anti-aging additives. The DSR analysis indicates that anti-aging additives can enhance the elastic behavior and improve the thermal stability of SBS modified asphalt. Improvement in the thermal-oxidative aging properties of SBS modified asphalt can be achieved with the three different anti-aging additives, but the UV aging properties of anti-aging additive/SBS modified asphalts are dependent on the type of anti-aging additive. Of the three different anti-aging additives, tinuvin770 improves both the thermal- and the photo-oxidative aging resistance of SBS modified asphalt significantly.

Aging Behaviour and Mechanism of SBS-Modified Asphalt

Author : Tao Ma
Publisher :
ISBN 13 :
Total Pages : 6 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Aging Behaviour and Mechanism of SBS-Modified Asphalt by : Tao Ma

Download or read book Aging Behaviour and Mechanism of SBS-Modified Asphalt written by Tao Ma and published by . This book was released on 2012 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aging behaviour and mechanism of styrene-butadiene-styrene (SBS)-modified asphalt has been investigated based on laboratory tests in this study. Rolling thin-film oven (RTFO) test and pressure-aging-vessel (PAV) test were conducted to prepare aged SBS-modified asphalt. Conventional property tests, including penetration, soften point, and ductility, as well as elastic recovery and SHRP property tests, including viscosity, dynamic shear rheometor (DSR) and bending-beam rheometer (BBR) tests, were mainly used to analyse the aging behaviour of SBS-modified asphalt. Then Fourier transform infrared spectroscopy (FTIR) and gel-permeation chromatography (GPC) tests were conducted to capture the aging mechanism of SBS-modified asphalt. The testing results indicated that SBS-modified asphalt has similar aging behaviour as base asphalt but better performance and anti-aging ability because of the existence of the SBS modifier. However, it is still inevitable that SBS-modified asphalt becomes aged because of thermal oxidation. The aging of SBS-modified binder consists of two parts: (i) the oxidative aging of the asphalt components, and (ii) the degradation of the SBS modifier. Because of the protective effect between asphalt and SBS polymer, the aging degrees of asphalt and SBS polymer were lower than those aged independently.

Rapport over de economische toestand van Engeland sedert het loslaten van de gouden standaard

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (688 download)

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Book Synopsis Rapport over de economische toestand van Engeland sedert het loslaten van de gouden standaard by :

Download or read book Rapport over de economische toestand van Engeland sedert het loslaten van de gouden standaard written by and published by . This book was released on 1935* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Performance Evaluation of Asphalt Concrete Mixtures Containing Unmodified and Crumb Rubber Modified Asphalt Binders

Author : Gajanan Suresh Natu
Publisher :
ISBN 13 :
Total Pages : 338 pages
Book Rating : 4.:/5 (395 download)

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Book Synopsis Performance Evaluation of Asphalt Concrete Mixtures Containing Unmodified and Crumb Rubber Modified Asphalt Binders by : Gajanan Suresh Natu

Download or read book Performance Evaluation of Asphalt Concrete Mixtures Containing Unmodified and Crumb Rubber Modified Asphalt Binders written by Gajanan Suresh Natu and published by . This book was released on 1998 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Durability of Composite-Modified Asphalt Mixture Based on Inherent and Improved Performance

Author : Haitao Zhang
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)

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Book Synopsis Durability of Composite-Modified Asphalt Mixture Based on Inherent and Improved Performance by : Haitao Zhang

Download or read book Durability of Composite-Modified Asphalt Mixture Based on Inherent and Improved Performance written by Haitao Zhang and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The composite performance of modified asphalt and composite-modified asphalt mixture (CMAM) is divided into inherent performance and improved performance. The inherent performance refers to the original performance of the virgin asphalt and asphalt mixture. The improved performance refers to the performance obtained by modifying the virgin asphalt. In the study, the modified asphalt and asphalt mixture were tested through a series of experiments. The antiaging durability of the modified asphalt is explored based on the inherent performance and improved performance at high and low temperatures. The antiaging durability of the modified asphalt mixture is explored based on the inherent performance and improved performance at the mechanical performance. Meanwhile, based on inherent and improved performances, this chapter uses three kinds of CMAM (4% SBS/3% SBR, 4% SBS/15% rubber, and 4% SBR/15% rubber) as research objects to test the change rule of mechanical properties. This chapter outlines CMAM design, mechanical property tests, and comparative durability analysis.

Rutting-Resistance Performance of SBS and Anti-Rutting Additive Composite-Modified Asphalt-Concrete Mixtures

Author : W. Cao
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Rutting-Resistance Performance of SBS and Anti-Rutting Additive Composite-Modified Asphalt-Concrete Mixtures by : W. Cao

Download or read book Rutting-Resistance Performance of SBS and Anti-Rutting Additive Composite-Modified Asphalt-Concrete Mixtures written by W. Cao and published by . This book was released on 2016 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: To improve the rutting resistance of the middle hot-mix asphalt (HMA) surface layer, composite modification of asphalt-concrete (AC) mixture by styrene-butadiene-styrene (SBS) and anti-rutting additive (ARA) was studied. First, the wheel-tracking test, bending test, and indirect tensile test were conducted to evaluate the effect of three dosages of ARA on the high-temperature performance, low-temperature performance, and moisture susceptibility of SBS-modified AC mixture and the optimum dosage of ARA was determined. Then the high-temperature rutting-resistance performance of composite-modified AC mixtures was studied through the dynamic modulus test and uniaxial creep test. The results showed that the high-temperature performance of composite-modified AC mixture was significantly improved, but the low-temperature performance and moisture susceptibility were slightly declined compared to the control mixture (SBS-modified AC mixture without ARA). The values of E*/sin? of composite-modified AC mixture were larger than those of the control mixture at various test temperatures and loading frequencies. The values of permanent deformation and creep rate of composite-modified AC mixtures were smaller than those of the control mixture. In conclusion, composite-modified AC mixture has excellent high-temperature stability.

Examination of Significant Binder Aging Due to the Use of Different Anti-Stripping Additives in Polymer and CRM Asphalt Mixtures Using GPC

Download Examination of Significant Binder Aging Due to the Use of Different Anti-Stripping Additives in Polymer and CRM Asphalt Mixtures Using GPC PDF Online Free

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

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Book Synopsis Examination of Significant Binder Aging Due to the Use of Different Anti-Stripping Additives in Polymer and CRM Asphalt Mixtures Using GPC by : Sungun Kim

Download or read book Examination of Significant Binder Aging Due to the Use of Different Anti-Stripping Additives in Polymer and CRM Asphalt Mixtures Using GPC written by Sungun Kim and published by . This book was released on 2020 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an anti-stripping agent (ASA), hydrated lime (HL) has been widely used for many years in the world. Many brands of liquid-type ASA (LA), which properly provided the anti-stripping function, have been also developed and marketed. Because HL was found to provide anti-aging function of the binder in the mix, in addition to anti-stripping function, its use was known to have many advantages of other beneficial functions to the asphalt pavement. However, because the anti-aging function of LA is in question, it will be important to recognize if the anti-aging function is presented by the LAs too. Therefore, this study investigated the anti-aging effect of HL and three LAs in normal, crumb rubber-modified and polymer-modified asphalt mixes, in terms of absolute viscosity (AV) estimated from the large molecular size (LMS) measured by gel permeation chromatography (GPC), a scientific equipment. It was found that HL provided a significant retardation of age hardening, compared with the binder of the mix without any ASA. However, unlikely the anti-stripping function, most of the LAs did not show age retardation effect. The anti-aging function of liquid additives was not proved in this study, and therefore, the significant difference in binder aging was present due to the use of different ASA.

Evaluation of Warm Mix Additives for Use in Modified Asphalt Mixtures

Author : Rukesh Maharjan
Publisher :
ISBN 13 :
Total Pages : 332 pages
Book Rating : 4.:/5 (951 download)

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Book Synopsis Evaluation of Warm Mix Additives for Use in Modified Asphalt Mixtures by : Rukesh Maharjan

Download or read book Evaluation of Warm Mix Additives for Use in Modified Asphalt Mixtures written by Rukesh Maharjan and published by . This book was released on 2015 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research effort was to evaluate the use of warm-mix additives with modified (polymer-modified and terminal blend tire rubber) asphalt mixtures from Nevada and California. This research was completed in two stages: Sasobit and Advera were evaluated in first stage while Evotherm and Foaming were evaluated in second stage. The three main components of the experimental plan include: evaluation of mixture resistivity to moisture damage, pavement performance characteristics of the mixtures, and mechanistic analysis of the mixtures for simulated flexible pavement. The moisture resistivity of all mixtures were checked by Indirect Tensile Strength (ITS), and Dynamic Modulus (E*) tests. Dynamic Modulus Ratio (ECR) and Tensile Strength Ratio (TSR) were computed at multiple Freeze-Thaw (F-T) cycles for further evaluation of moisture sensitivity of mixtures. Flow Number (FN) and Flexural beam fatigue tests were conducted to evaluate the performance characteristics of WMA additives/technology. The terminal blend tire rubber-modified binder with lime treatment works effectively in resisting moisture damage, rutting, and to significantly-reasonably improve the fatigue life of the WMA Evotherm, Foaming, Advera and Sasobit mixtures. Hence, it is the best solution for the design and construction of sustainable asphalt pavements. The use of terminal blend rubberized asphalt binder is an excellent and economical selection in reducing tire waste and environmental impacts.

Performance Evaluation of Polyphosphoric Acid Modified Asphalt Binders

Author : Istiaque Mahmud
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Performance Evaluation of Polyphosphoric Acid Modified Asphalt Binders by : Istiaque Mahmud

Download or read book Performance Evaluation of Polyphosphoric Acid Modified Asphalt Binders written by Istiaque Mahmud and published by . This book was released on 2016 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Rheological, Chemical and Microstructural Characterization of Asphalt Binders Aged at Different Conditions and Evaluation of the Use of Antioxidants and Copolymers to Retard Aging

Download Rheological, Chemical and Microstructural Characterization of Asphalt Binders Aged at Different Conditions and Evaluation of the Use of Antioxidants and Copolymers to Retard Aging PDF Online Free

Author : Mohammad Solaiman Khan
Publisher :
ISBN 13 :
Total Pages : 314 pages
Book Rating : 4.:/5 (113 download)

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Book Synopsis Rheological, Chemical and Microstructural Characterization of Asphalt Binders Aged at Different Conditions and Evaluation of the Use of Antioxidants and Copolymers to Retard Aging by : Mohammad Solaiman Khan

Download or read book Rheological, Chemical and Microstructural Characterization of Asphalt Binders Aged at Different Conditions and Evaluation of the Use of Antioxidants and Copolymers to Retard Aging written by Mohammad Solaiman Khan and published by . This book was released on 2017 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rheological, chemical and microstructural properties of asphalt binders change with oxidative aging which is accelerated at elevated temperatures. Aging stiffens asphalt binders and increases the embrittlement of asphalt mixtures which would lead to fatigue cracking and eventually pavement failure under repetitive traffic loading. This study explored the feasibility of using antioxidant additives and copolymers with antioxidant agents to retard oxidative aging of asphalt binders. The performance of the additives was evaluated at the binder and mastic levels. The laboratory experiments included two unmodified binders, various antioxidant additives and copolymers, and three aggregate types. The fatigue characteristics of asphalt binders and mastic were determined before and after aging and an aging index was defined to evaluate the effect of the additives on aging. The results demonstrated that certain antioxidants and copolymers such as Redicote AP, Solprene, and Calprene may retard the aging and improve the rheological properties of the asphalt binders. In addition, the results of mastic testing confirmed the favorable effect of certain antioxidants on improving the resistance to fatigue cracking. Furthermore, the type of aggregate was found to influence the rate of aging of asphalt mixtures. Based on the rheological and fracture test results on asphalt binders and mastic, the effect of antioxidants was further investigated and validated at spectroscopic, chemical and microstructural level using Fourier-transform infrared spectroscopy (FTIR), Gel-permeation chromatography (GPC) and Atomic Force Microscopy (AFM), respectively. The spectroscopic analysis with FTIR supported the efficacy of the additives in retarding aging by reducing the carbonyl growth in aged binders. The chemical analysis with GPC confirmed that both Redicote and Solprene were capable of reducing the large molecular size fraction in binders subjected to long-term aging. The image analysis with AFM provided insight on the spatial distribution, surface roughness parameters and micromechanical properties (i.e., adhesion, stiffness) of various phases and the effect of aging on the micro-rheology of antioxidant-modified binders. The last part of this study examined the effect of aging on the viscoelastic response of asphalt mixture using the Prony series representation and a newly developed parameter called aging state variable 'A'. The dynamic modulus test data was used for the analysis. The aging state variable 'A' was found to capture the effect of aging temperature and duration of aging on the viscoelastic properties of asphalt mixtures.

Issues in Teaching and Education Policy, Research, and Special Topics: 2013 Edition

Author :
Publisher : ScholarlyEditions
ISBN 13 : 1490110879
Total Pages : 858 pages
Book Rating : 4.4/5 (91 download)

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Book Synopsis Issues in Teaching and Education Policy, Research, and Special Topics: 2013 Edition by :

Download or read book Issues in Teaching and Education Policy, Research, and Special Topics: 2013 Edition written by and published by ScholarlyEditions. This book was released on 2013-05-01 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Teaching and Education Policy, Research, and Special Topics: 2013 Edition is a ScholarlyEditions™ book that delivers timely, authoritative, and comprehensive information about Education Testing and Evaluation. The editors have built Issues in Teaching and Education Policy, Research, and Special Topics: 2013 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Education Testing and Evaluation in this book to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Teaching and Education Policy, Research, and Special Topics: 2013 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Hot-mix Asphalt Mixtures

Author :
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (932 download)

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Book Synopsis Hot-mix Asphalt Mixtures by :

Download or read book Hot-mix Asphalt Mixtures written by and published by . This book was released on 1999 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Superpave Mix Design

Author : Asphalt Institute
Publisher :
ISBN 13 : 9781934154175
Total Pages : 102 pages
Book Rating : 4.1/5 (541 download)

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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:

8th RILEM International Symposium on Testing and Characterization of Sustainable and Innovative Bituminous Materials

Author : Francesco Canestrari
Publisher : Springer
ISBN 13 : 9401773424
Total Pages : 1024 pages
Book Rating : 4.4/5 (17 download)

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Book Synopsis 8th RILEM International Symposium on Testing and Characterization of Sustainable and Innovative Bituminous Materials by : Francesco Canestrari

Download or read book 8th RILEM International Symposium on Testing and Characterization of Sustainable and Innovative Bituminous Materials written by Francesco Canestrari and published by Springer. This book was released on 2015-09-24 with total page 1024 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents the results of RILEM TC 237-SIB (Testing and characterization of sustainable innovative bituminous materials and systems). The papers have been selected for publication after a rigorous peer review process and will be an invaluable source to outline and clarify the main directions of present and future research and standardization for bituminous materials and pavements. The following topics are covered: - Characterization of binder-aggregate interaction - Innovative testing of bituminous binders, additives and modifiers - Durability and aging of asphalt pavements - Mixture design and compaction analysis - Environmentally sustainable materials and technologies - Advances in laboratory characterization of bituminous materials - Modeling of road materials and pavement performance prediction - Field measurement and in-situ characterization - Innovative materials for reinforcement and interlayer systems - Cracking and damage characterization of asphalt pavements - Recycling and re-use in road pavements This is the proceedings of the RILEM SIB2015 Symposium (Ancona, Italy, October 7-9, 2015).

Modified Asphalt

Author : Jose Luis Rivera Armenta
Publisher : BoD – Books on Demand
ISBN 13 : 1789237262
Total Pages : 142 pages
Book Rating : 4.7/5 (892 download)

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Book Synopsis Modified Asphalt by : Jose Luis Rivera Armenta

Download or read book Modified Asphalt written by Jose Luis Rivera Armenta and published by BoD – Books on Demand. This book was released on 2018-09-19 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Asphalt modification is an important area in the development of new road and pavement materials. There is an urgent demand for road materials that can minimize fracture at low temperatures and increase resistance to deformation at high temperatures. The function of asphalt is to bind aggregate to protect it from water and other harmful agents. In the beginning asphalt was ideal for this purpose, but recently traffic loads have increased and environmental factors have deteriorated more rapidly than before. Asphalt is a byproduct of crude oil in the refining process, and it is considered a complex heterogeneous mixture of hydrocarbons. Asphalt modification has become an important research area, using several methods and new materials as modifiers.

Sustainable Designed Pavement Materials

Author : Yue Xiao
Publisher : MDPI
ISBN 13 : 3039289853
Total Pages : 346 pages
Book Rating : 4.0/5 (392 download)

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Book Synopsis Sustainable Designed Pavement Materials by : Yue Xiao

Download or read book Sustainable Designed Pavement Materials written by Yue Xiao and published by MDPI. This book was released on 2020-12-02 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue “Sustainable Designed Pavement Materials” has been proposed and organized as a means to present recent developments in the field of environmentally-friendly designed pavement materials. For this reason, articles included in this special issue relate to different aspects of pavement materials, from industry solid waste recycling to pavement materials recycling, from pavement materials modification to asphalt performance characterization, from pavement defect detection to pavement maintenance, and from asphalt pavement to cement concrete pavement.