Relevant bibliographies by topics / Modified asphalt concrete

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Academic literature on the topic 'Modified asphalt concrete'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Modified asphalt concrete"

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Kim, Kwang W., Seung Jun Kweon, Young S. Doh, and Tae-Soon Park. "Fracture toughness of polymer-modified asphalt concrete at low temperatures." Canadian Journal of Civil Engineering 30, no. 2 (April 1, 2003): 406–13. http://dx.doi.org/10.1139/l02-101.

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The fracture toughness of asphalt concrete increases at low temperature and then decreases at temperatures below a certain level. Some polymers are known to have the property of improving the temperature susceptibility of asphalt binder at low temperatures. Therefore, this study evaluated the fracture toughness (KIC) of some polymer-modified asphalt concretes. Low-density polyethylene (LDPE), styrene–butadiene–styrene (SBS), and a mixed polymer of LDPE and SBS were used in this study. The fracture toughness KIC of normal asphalt concrete was compared with that of polymer-modified asphalt (PMA) concrete, and the effectiveness of polymer modification against falling values of KIC was evaluated at low temperatures. The results showed that PMA concretes, in general, showed better KIC than normal asphalt concretes, and the temperature at which the highest KIC was obtained was lower than that in the case of normal asphalt concrete. Therefore, the PMA concretes evaluated in this study had better fracture resistance than normal asphalt at low temperatures.Key words: asphalt concrete, polymer-modified asphalt, PMA, fracture toughness, differential thermal contraction, low-temperature damage.
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Jiang, Rong-Bin, Jyh-Dong Lin, and Deng-Fong Lin. "Rheology of Asphaltic Binders and Their Effects on Asphalt Concrete." Transportation Research Record: Journal of the Transportation Research Board 1535, no. 1 (January 1996): 74–80. http://dx.doi.org/10.1177/0361198196153500110.

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The rheology of asphaltic binders and their effects on asphalt concrete are discussed with the intention of improving the correlation between conventional mix design results and pavement performance. Test results show that mineral fillers increase the viscosity and pseudoplasticity of asphalts but do not always decrease the tan 8, except apparently at a lower frequency or at a higher temperature. Mineral fillers are also hard to mix homogeneously and quickly with asphalts. All these effects become more pronounced with a continuously increasing filler to asphalt (F/A) ratio, and uses are limited to a lower F/A range unless the processing temperature is adjusted properly. The abnormal drop in tan δ improves for some modified asphalts (e.g., air-blown or polymerized asphalt).
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Zuluaga-Astudillo, Daniel Alberto, Hugo Alexander Rondón-Quintana, and Carlos Alfonso Zafra-Mejía. "Mechanical Performance of Gilsonite Modified Asphalt Mixture Containing Recycled Concrete Aggregate." Applied Sciences 11, no. 10 (May 13, 2021): 4409. http://dx.doi.org/10.3390/app11104409.

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Hot-mix asphalts exposed to hot weather and high traffic volumes can display rutting distress. A material that can be used to increase the stiffness of asphalt binders is gilsonite. On the other hand, from an environmental point of view, the virgin natural aggregates of asphalt mixtures can be replaced with recycled concrete aggregates. For these reasons, this study modified the asphalt binder with gilsonite by wet-process to improve rutting resistance, and replaced (by mass and volume) part of the coarse fraction of the aggregate with recycled concrete aggregate in two hot-mix asphalts with different gradations. Unlike other studies, a larger experimental phase was used here. Marshall, indirect tensile strength, resilient modulus, permanent deformation, fatigue resistance, and Cantabro tests were performed. An ANOVA test was carried out. If the replacement of the virgin aggregate by recycled concrete aggregates was made by volume, both materials (gilsonite and recycled concrete aggregate) could be used in hot-mix asphalts for thick-asphalt layers in high temperature climates and any level of traffic. The use of both materials in hot-mix asphalts is not recommended for thin-asphalt layers in low temperatures climates. It is not advisable to replace the aggregates by mass.
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Radziszewski, Piotr. "MODIFIED ASPHALT MIXTURES RESISTANCE TO PERMANENT DEFORMATIONS." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 13, no. 4 (December 31, 2007): 307–15. http://dx.doi.org/10.3846/13923730.2007.9636451.

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Permanent deformations, primarily in the form of ruts, are one of the basic asphalt pavement damages impairing its service properties. Application of appropriate asphalt mixtures and binder modification are effective methods for improving asphalt courses resistance. While being manufactured, stored, fitted into a road pavement and during long term service, bitumen binders and asphalt mixtures are subject to continuous unfavourable ageing processes during which pavement courses characteristics change considerably, resistance to permanent deformations being among them. This article presents rut and dynamic creep test results of concrete, SMA (stone mastic asphalt), MNU (thin courses of non‐continuous grain mixtures), Superpave mixture and porous asphalt mixture of two air void content percentages: 15 %, 20 %. Asphalt concrete mixtures, MNU's and porous asphalt mixtures contained elastomer, plastomer and fine rubber modified binders. Samples for laboratory rut tests were made by slab compaction because this method, as the author's previous research had shown, was the closest to ‘in‐situ’ conditions. Resistance to permanent deformations of the examined specimens was evaluated before aging, after technological aging (short term ageing) and after service ageing (long‐term ageing). The test results show that resistance to permanent deformations depends on the kind of asphalt mixture and binder applied. Concrete asphalts with fine rubber modified bitumens and concrete asphalts with 7 % polymer modified binders as well as SMA's and Superpave mixtures with unmodified binders appeared to be most resistant to permanent deformations after a long‐term laboratory ageing. It was proved that the overall evaluation of resistance to permanent deformations could be obtained by rut and creep testing of asphalt mixtures exposed to short‐ and long‐term ageing. Simultaneous determining 4 parameters: maximum rut depth after short‐term ageing, rutting coefficient after operational ageing, stiffness creeping modulus after long‐term ageing and cumulated deformation after short‐term ageing, facilitates full characteristics of modified asphalt mixes designed to be built in the wearing course of a road pavement.
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Chen, Yuan Zhao, and Zhen Xia Li. "High Temperature Stability of Modified Asphalt Concrete." Applied Mechanics and Materials 438-439 (October 2013): 391–94. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.391.

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According to high temperature weak stability of common asphalt mixture, rutting tests of diatomite modified asphalt mixture, modified lake asphalt mixture, modified rock asphalt mixture and common asphalt mixture are carried out. Changes of dynamic stability for common asphalt mixture compared with modified asphalt mixtures are comparatively analysed. The results show that compared with common asphalt mixture, rutting resistances of diatomite modified asphalt mixture, modified lake asphalt mixture and modified rock asphalt mixture are greatly improved. It is proposed that those kinds of modified asphalt mixture are adopted in asphalt pavement of large longitudinal slope section.
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Li, Yun Liang, Yi Qiu Tan, and Liang Meng. "Application Study on High Modulus Asphalt Concrete in Bridge Pavement." Advanced Materials Research 243-249 (May 2011): 4244–47. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.4244.

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A type of high modulus asphalt was prepared by mixing modifier into SBS modified asphalt and used for confecting HMAC-16 high modulus asphalt concrete with finished product of modified asphalt from Liaohe oil field. This paper investigates pavement performance of high modulus asphalt concrete and its practical application in bridge pavement. Results obtained by application in practical project show that the high modulus asphalt concrete is provided with outstanding high-and-low temperature performance and water damage resistance which are suitable for bridge pavement.
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Azarhoosh, Alireza, Mehdi Koohmishi, and Gholam Hossein Hamedi. "Rutting Resistance of Hot Mix Asphalt Containing Coarse Recycled Concrete Aggregates Coated with Waste Plastic Bottles." Advances in Civil Engineering 2021 (June 21, 2021): 1–11. http://dx.doi.org/10.1155/2021/9558241.

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The use of recycled concrete aggregate (RCA) as a part of coarse aggregates in asphalt pavements confers economic and environmental benefits. Coarse RCA (CRCA) has inferior mechanical and physical properties compared to natural aggregates due to very porous and weakly adhered cement mortar. In this study, CRCA surfaces were coated with waste plastic bottles (WPB) and used at 15%, 30%, and 50% in the asphalt concrete. The Marshall, stiffness modulus, and dynamic creep tests were performed to determine the strength of hot mix asphalts against rutting. The results revealed that the use of untreated CRCA reduced the Marshall quotient and the rutting resistance of the asphalt concrete. The results of the stiffness modulus and dynamic creep tests indicated that CRCA incorporation increased permanent deformation in the tested specimens due to the reduction of asphalt concrete stiffness. However, the asphalt concrete containing treated CRCA had lower permanent deformation because WPB promotes CRCA stability by penetrating its void and reinforcing cement mortar. Furthermore, by raising the temperature, the strength of all asphalt concretes decreased against rutting, and the reduction rate was higher in the modified specimens.
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Wu, Shao Peng, Tian Gui Liu, Ling Pang, Ting Wei Cao, and Pan Pan. "Study of High Temperature Performance and Low Temperature Property on Layered Silicate Modified Asphalt Concrete." Key Engineering Materials 509 (April 2012): 189–93. http://dx.doi.org/10.4028/www.scientific.net/kem.509.189.

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Montmorillonite (MMT), a typical layered silicate, has been widely used to prepare modified asphalt. This paper investigates the high temperature performance and low temperature property on layered silicate modified asphalt concrete. The control concrete is prepared by base asphalt. Meanwhile, three-point bending, conventional and SHRP rutting tests are used to compare the properties of the two types of asphalt concrete. The results of conventional and SHRP rutting tests show that the modified asphalt concrete exhibits a better high temperature performance than the control concrete. And the maximum bending strength of modified asphalt concrete is higher than that of control concrete at the same temperature. It can be concluded that both the high temperature performance and low temperature property of asphalt concrete has been improved efficiently by utilization of layered silicate modified asphalt.
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Guo, Xuedong, Mingzhi Sun, Wenting Dai, and Shuang Chen. "Performance Characteristics of Silane Silica Modified Asphalt." Advances in Materials Science and Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/6731232.

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At present there are many kinds of fillers and modifier used for modified asphalt, but the effect of modifier differs in thousands of ways; most of them can increase the high temperature performance of asphalt, but the modified effect of low-temperature crack resistance, water stability, and antifatigue performance is different. Aiming at the subsistent problems, this paper innovatively puts forward the idea of taking the silane silica (nanosilica modified with silane coupling agent) as filler to develop one kind of modified asphalt concrete which has excellent comprehensive performance based on the idea of enhance the whole performance of asphalt concrete and interface consolidation strength between aggregate and asphalt at the same time. The best mixing amount of silane silica and the production process of modified asphalt were conducted by contrasting the test date as penetration, viscosity, and softening point; the aging of asphalt and modified asphalt was analyzed by TG test, the superiority of silane silica modified asphalt is more clearly understandable by chemical analysis results. Meanwhile it is proved that silane silica has positive effect to improve the mixture of high and low temperature performance, water stability, and aging resistance through a series of road performance tests.
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Handayani, Ani Tjitra, Bagus Hario Setiaji, and Sri Prabandiyani. "The Use of Natural Zeolite as an Additive in Warm Mix Asphalt with Polymer Modified Asphalt Binder." International Journal of Engineering Research in Africa 15 (April 2015): 35–46. http://dx.doi.org/10.4028/www.scientific.net/jera.15.35.

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Asphalt Concrete mixture of polymer modification are used to reduce the damage early and increasing the durability of pavement to various damage such as permanent deformation, cracking due to temperature changes, fatigue During this process the polymer asphalt mixing using Hot Mix Asphalt / HMA. In accordance with the name and nature of hot mix asphalt, require high enough heating temperature on the Asphalt Mixing Plant (AMP), and also requires a high temperature compaction. As a result, it takes quite a lot of fuel so produced a large exhaust emissions. Emissions generated during the mixing process and compaction of HMA is a challenge for the environment. Some countries have developed a method of asphalt mixture to overcome this by using Warm Mix Asphalt technology. Warm Mix Asphalt is the technology of mixing and compaction temperatures of asphalt mixtures using mixing and compaction temperatures lower than Hot Mix Asphalt. Decreasing the mixing and compaction temperatures by adding additives to the asphalt mixture. Types of additives that have been widely used and developed for Warm Mix Asphalt them is the use of synthetic zeolites with various trademarks such as Aspha-min (R), Sasobit(R) dan Advera(R). In this paper the synthetic zeolite will be replaced by natural zeolite as an additive to be mixed with a mixture of Polymer Modified Asphalt Concrete. This study uses laboratory testing, using aggregate materials from Subang, West Java, Asphalt Elastomer Polymers, natural zeolite mineral mordenite sourced from Bayat, Central Java, Indonesia. Tests using a mixture Marshall Test. Marshall test results stated that the levels of natural zeolite 1% can reduce the temperature of mixing and compaction temperatures on Polymer Modified Concrete Asphalt mix 30°C, lower than the temperature of the mixture of Polymer Modified Asphalt Concrete without zeolite. Keywords: additive, Natural Zeolites, Warm Mixed Asphalt, Polymer Modified Asphalt Concrete
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Dissertations / Theses on the topic "Modified asphalt concrete"

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Meneguini, Eduardo Cesar Antonelli. "Avaliação de concreto asfáltico com incorporação de pó de borracha reciclada de pneus, tratada superficialmente com hidróxido de sódio comercial." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258506.

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Orientador: Vladimir Antonio Paulon
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
Made available in DSpace on 2018-08-19T19:32:15Z (GMT). No. of bitstreams: 1 Meneguini_EduardoCesarAntonelli_D.pdf: 4162044 bytes, checksum: 987787614d2ef9437a3937a43815bde9 (MD5) Previous issue date: 2011
Resumo: O principal objetivo deste trabalho é a determinação das principais propriedades do asfalto borracha e das propriedades mecânicas de um concreto asfáltico, tendo, como adição, o uso de borracha moída de pneus usados, tratada com solução de hidróxido de sódio comercial. Obtivemos, com o tratamento superficial da borracha de pneus usados, melhor interface entre a borracha e asfalto, assim como com o concreto asfáltico e a borracha, alcançando sensível aumento da durabilidade do asfalto-borracha. Realizamos, primeiramente, ensaios para caracterizar o asfalto-borracha tratado de acordo com as Normas vigentes, ensaios de durabilidade e, em seguida, ensaios mecânicos do concreto asfáltico. A recuperação elástica do asfalto-borracha utilizando pó de borracha tratada com hidróxido de sódio aumentou em 10% quando comparados com asfalto-borracha sem tratamento. Os resultados demonstraram melhora da estabilidade à estocagem em 42% nos ensaios realizados. Os ensaios de envelhecimento demonstraram que o tratamento do pó de borracha com hidróxido de sódio aumentou sensivelmente sua durabilidade. O ensaio de variação de massa, após o ensaio de envelhecimento, demonstrou que a perda de massa dos corpos de prova utilizando pó de borracha tratada com hidróxido de sódio foi 111% melhor quando comparados com os corpos de prova utilizando pó de borracha sem tratamento. Concluímos que há grande aplicabilidade deste asfalto-borracha na construção civil
Abstract: The main objective of this study is to determine the main properties of the asphalt-rubber and the mechanical properties of an asphalt concrete, with the addition of ground rubber from second-hand tires, treated with a sodium hydroxide commercial solution. We obtained, with the superficial treatment of rubber from second-hand tires, a better interface between the rubber and the asphalt, as well as with the asphalt concrete and the rubber, achieving significant increase in the durability of the asphalt-rubber. We undertake tests to characterize the treated asphalt-rubber according to current standards, durability tests, and then mechanical tests of the asphalt concrete. The elastic recovery of the rubber asphalt with rubber powder treated with sodium hydroxide increased by 10% compared to the untreated rubber asphalt. The results showed an improved stability to storage in 42% in the tests. The aging tests showed that the treatment of the rubber powder with sodium hydroxide significantly increased their durability. The mass change test after the aging test showed that the mass loss of the specimens with rubber powder treated with sodium hydroxide was 111% better when compared to the specimens with rubber powder without treatment. We conclude that there is great use of this rubber asphalt in the construction industry
Doutorado
Saneamento e Ambiente
Doutor em Engenharia Civil
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Nguyen, Tom P. "MITIGATING MOISTURE SUSCEPTIBILITY IN HOT-MIX ASPHALT CONCRETE." DigitalCommons@CalPoly, 2011. https://digitalcommons.calpoly.edu/theses/467.

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Moisture damage in asphalt pavement has always been a problem for drivers, bicyclists, and pedestrians. The primary objective of this study is to evaluate moisture susceptibility of Hot-Mix Asphalt (HMA) and to investigate mitigation techniques using different antistripping agents. Three types of antistripping agents were used in this research investigation. Two of which are chemical based and the other is hydrated lime. The two types of liquid antistripping agents used in this study include Arr Maz CC LOF-6500 and Arr Maz CC XL-9000. These two liquid antistripping agents were tested at 0.25%, 0.50%, and 0.75%. Hydrated Lime was tested at 1.0%, 1.5%, and 2.0%. The binder used in this study is Asphalt Performance Grade (PG) 64-16 provided by Oxnard Refinery. The crushed stone aggregate used in this study was provided by Cal Portland. This study follows the guidelines of standardized AASHTO, ASTM, and SuperPave mix design for all preparation and test procedures. A total of 120 4-inch by 2.83-inch core specimens with void ratios between 6 to 8 percent were created to test for moisture susceptibility in accordance with the Modified Lottman Test, which tested for Indirect Tensile Strength and Immersion Compression Test, which tested for Compression Strength and Elasticity. During the test, half of these specimens were placed in a hot water bath for 24 hours to condition the sample to represent field performance and the other half were unconditioned. Based on the results, the best liquid antistripping agent is XL-9000 at 0.50% and hydrated lime is most efficient at a dosage rate of 1.5%. The best performing antistripping additive for the value is hydrated lime at 1.5%.
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Penny, Julie Elizabeth. "An evaluation of heated reclaimed asphalt pavement (RAP) material and wax modified asphalt for use in recycled hot mix asphalt (HMA)." Worcester, Mass. : Worcester Polytechnic Institute, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-010807-113145/.

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Ofori-Abebresse, Edward Kwame. "Fatigue resistance of hot-mix asphalt concrete (HMAC) mixtures using the calibrated mechanistic with surface energy (CMSE) measurements approach." Thesis, Texas A&M University, 2006. http://hdl.handle.net/1969.1/4136.

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Fatigue cracking is one of the fundamental distresses that occur in the life of a Hot Mix Asphalt Concrete (HMAC) pavement. This load induced distress leads to structural collapse of the entire pavement ultimately and can only be remedied by rehabilitation. There is the need, therefore, for a total understanding of the phenomenon to be able to counter its occurrence. The fatigue resistance of hot mix asphalt concrete (HMAC) has been estimated using approaches ranging from empirical methods to mechanistic-empirical methods to purely mechanistic methods. A continuum mechanics based approach called the Calibrated Mechanistic with Surface Energy (CMSE) measurements was developed at Texas A&M University and recommended after comparison with other approaches in predicting fatigue lives of two Texas HMAC mixtures. The CMSE approach which includes fundamental material properties such as fracture, aging, healing, and anisotropy has been shown to effectively model the parameters that affect the performance of HMAC pavements exposed to repetitive traffic loads. Polymer modified asphalt (PMA) improves pavement performance by providing additional resistance to the primary distresses in flexible pavements, including permanent deformation or rutting, thermal cracking, and fatigue cracking. In this research, the CMSE approach was utilized to estimate the fatigue resistance of HMAC fabricated with asphalts modified with Styrene-butadiene-Styrene (SBS) co-block polymer. These HMAC mixtures were fabricated from materials used on three different road sections in Texas and one test pavement in Minnesota. The CMSE approach was validated as an effective approach for estimating the fatigue resistance of HMAC mixtures with PMA. The effect of oxidative aging on the fatigue resistance of the HMAC mixtures was also verified. Oxidative aging of the mixtures resulted in a corresponding decrease in mixture fatigue resistance. In addition, for two HMAC mixtures with the same binder content and aggregate gradation, the mixture with the softer of the two Performance Grade (PG) binders exhibited greater fatigue resistance. The use of the Utility Theory revealed the possible effects of aggregate geometric properties on the HMAC mixture properties and consequently on their fatigue resistance.
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Othman, Ayman Mahmoud. "Mechanical performance and fatigue crack growth behavior of polymer-modified asphalt concrete mixtures." Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1058531669.

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Asam, Kalyan Reddy. "Laboratory evaluation of the effect of superpave gradations and polymer modified asphalts on pavement performance." Ohio : Ohio University, 2001. http://www.ohiolink.edu/etd/view.cgi?ohiou1173466416.

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Edwards, Ylva. "Influence of waxes on bitumen and asphalt concrete mixture performance." Doctoral thesis, KTH, Väg- och banteknik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-553.

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This doctoral thesis consists of a literature review, presented in two papers, and another six papers describing experimental studies of the influence of different kinds of wax and polyphosporic acid on bitumen and asphalt concrete mixture properties. The literature review should give an extensive description of the field of knowledge concerning wax in bitumen. Effects of wax in crude oil, bitumen and asphalt concrete as well as test methods for studying these effects are described. Theories behind possible mechanisms are also discussed, and commercial wax as additive to bitumen for different purposes included. The experimental parts comprise laboratory studies involving totally five 160/220 penetration base bitumens from different sources, two isolated bitumen waxes, five commercial waxes and one polyphosphoric acid. Asphalt concrete slabs, containing base or modified bitumen were prepared and tested. Binder properties were evaluated using different types of laboratory equipment, such as dynamic shear rheometer (DSR), bending beam rheometer (BBR), differential scanning calorimeter (DSC), force ductilometer, as well as equipment for determining conventional parameters like penetration, softening point, viscosity, and Fraass breaking point. Fourier Transform Infrared (FTIR) spectroscopy and Thin Layer Chromatography (TLC-FID) were used for chemical characterization. The binders were aged by means of the rolling thin film oven test (RTFOT) and pressure ageing vessel (PAV) in combination. Asphalt concrete properties were evaluated at low temperatures using the tensile strain restrained specimen test (TSRST) and creep test at -25°C. Dynamic creep testing was performed at 40°C, as well as complex modulus tests between 0 and 20°C. Binder test results indicated that the magnitude and type of effect on bitumen rheology depend on the bitumen itself, type of crystallizing fraction in the bitumen and/or type and amount of additive used. Bitumen composition was found to be of decisive importance. Adding polyethylene wax or polyphosphoric acid, especially to a non-waxy 160/220 penetration grade bitumen, showed no or positive effects on the rheological behaviour at low temperatures (decrease in stiffness) as well as medium and high temperatures (increase in complex modulus and decrease in phase angle). However, the corresponding positive effects could not be shown in dynamic creep testing (at 40°C) of asphalt concrete mixtures containing these modified binders. Adding FT-paraffin decreased the physical hardening index for all bitumens. Also polyethylene wax and montan wax showed this effect for some bitumens. Slack wax showed a large increasing effect on physical hardening, and polyphosphoric acid none or a minor negative effect. No correlation between physical hardening index (PHI) and wax content by DSC was found in this study, involving both natural bitumen wax and commercial wax. Addition of the commercial waxes used showed no or marginally positive influence on bitumen ageing properties for the bitumens and test conditions used. Comparing asphalt mixture test results to the corresponding binder test results, the effects on asphalt mixtures from adding commercial wax or polyphosphoric acid were less evident. Significant binder physical hardening by BBR could not be confirmed by TSRST.
QC 20101006
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Bruxel, Daiana Frank. "ESTUDO DO COMPORTAMENTO VISCOELÁSTICO DE CONCRETOS ASFÁLTICOS CONVENCIONAIS E MODIFICADOS ATRAVÉS DE ENSAIOS DE LABORATÓRIO E DE ANÁLISE DE DESEMPENHO." Universidade Federal de Santa Maria, 2015. http://repositorio.ufsm.br/handle/1/7901.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Road transport is of great importance for many countries, in Brazil it can be even more extreme, by excessive movement of cargo through this modal. We know that the maintenance costs of roads are high, forcing researchers to find always new alternatives to improve the use of materials, reduce energy consumption, speed up restoration interventions, among others. The goal of this study is to evaluate the behavior of conventional asphalt mixtures of polymers and modified for resistance and deformability. For this study, we used a crushed mineral aggregate skeleton of volcanic origin with framed particle size in the range of C DNIT, coming from the quarry of Santo Antonio da Patrulha RS. 4 types of asphalt binders were used, the CAP 50/70, the TLA CAP, the CAP 60/85 and the TLA FLEX, and the latter two are modified polymers. Compression was done according to Superpave methodology. Tests were carried out to check the mechanical behavior (test Tensile Strength for Diametral Compression (RT) assay Resilience Module (MR) and Dynamic Module test Uniaxial) and later held one performance analysis of mixtures studied by AASHTOWare software. From these investigations it was possible to verify the behavior of the mixtures studied for their resistance, deformability and especially as its durability. It can be said that the choice of the mixture to be used will depend on its applicability. The tests showed that mixtures with TLA Flex achieved the best results, a fact that was confirmed by performance analysis that demonstrated the mixture of TLA Flex with a thickness of 18 cm coating meets all requirements evaluated.
O transporte rodoviário é de grande importância para muitos países, no Brasil isso pode ser ainda mais extremo, pelo excesso de movimentação das cargas através deste modal. Sabe-se que os custos de manutenção das rodovias são elevados, forçando os pesquisadores a encontrar sempre novas alternativas para melhorar o aproveitamento dos materiais, diminuir o consumo de energia, agilizar as intervenções de restauração, entre outros. O objetivo do presente trabalho é avaliar o comportamento de misturas asfálticas convencionais e modificadas por polímeros quanto à resistência e deformabilidade. Para este estudo foi utilizado um esqueleto mineral agregado britado de origem vulcânica com granulometria enquadrada na Faixa C do DNIT, advindos da pedreira de Santo Antônio da Patrulha, RS. Foram utilizados 4 tipos de ligantes asfálticos, o CAP 50/70, o CAP TLA, o CAP 60/85 e o TLA FLEX. A dosagem e compactação foram feitas segundo a metodologia SUPERPAVE. Foram realizados ensaios para verificação do comportamento mecânico (ensaio de Resistência à Tração por Compressão Diametral (RT), ensaio de Módulo de Resiliência (MR) e ensaio de Módulo Dinâmico Uniaxial) e posteriormente realizada uma análise desempenho das misturas estudadas através do software AASHTOWare. A partir destas investigações foi possível verificar o comportamento das misturas estudadas quanto a sua resistência, deformabilidade e principalmente quanto ao seu desempenho. Pode-se afirmar que a escolha da mistura a ser utilizada dependerá do cumprimento de uma série de quesitos de projeto. Os ensaios evidenciaram que as misturas com TLA Flex obtiveram os melhores resultados, fato este que foi confirmado através da análise de desempenho que comprovou que esta mistura, com espessura de 18 cm de revestimento cumpre com todos os requisitos de projeto.
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Çelik, Osman Nuri. "The engineering properties and fatigue behaviour of asphaltic concrete made with waste shredded tyre rubber modified binders." Thesis, University of Leeds, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271237.

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Chih-HongLi and 李志鴻. "Engineering Properties of Recycled Modified Asphalt Concrete (RMAC)." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/29ecz2.

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碩士
國立成功大學
土木工程學系
104
There are few domestic studies of Reclaimed Modified Asphalt Pavement (RMAP) now. In this study, AC-20 and AC-10 were respectively used as virgin asphalt and softening agent. RA-5 was used as rejuvenating agent. In order to compare engineering and volumetric properties for different mix designs, asphalt content and grading curve of mix designs were adjusted to the same as much as possible. In this study, conducting Marshall test of stability, flow, indirect tension, resilient modulus, residual strength and Cantabro test with mixture conditioning to evaluate virgin asphalt concrete, Recycled Asphalt Concrete (RAC) and Recycled Modified Asphalt Concrete (RMAC). In addition to flow value, engineering properties of RMAC and RAC were all in compliance with specification requirements, and reclaimed materials still obviously had hardening effect. RAC and RMAC had significant differences in Cantabro test, but there were no significant differences between short-term aging and long-term aging. When adding rejuvenating agent RA-5, V.M.A. of RAC and RMAC would decline with the increase of the proportion of reclaimed materials；but when adding the softening agent, V.M.A of RAC in a high proportion of reclaimed material would rise due to porosity increasing, and RMAC would still control the porosity of 4%. From the results of engineering and volumetric properties, it is feasible to use RMAP in asphalt pavement when proportion of reclaimed materials are less than 60%. Because of the effect of black rock, the surface of specimens would generate binder spots and bleeding.
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Books on the topic "Modified asphalt concrete"

1

Hunt, Liz. Crumb rubber modified asphalt concrete in Oregon. Salem, OR: Oregon Dept. of Transportation, Research Group, 2002.

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2

Bramer, Thomas F. Van. Performance of two rubber-modified asphalt-concrete overlays: A three-year progress report. Albany, NY: Engineering Research and Development Bureau, New York State Dept. of Transportation, 1992.

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Papagiannakis, A. T. A review of crumb-rubber modified asphalt concrete technology. [Olympia]: Washington State Dept. of Transportation, 1995.

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Bahia, Hussain U. Investigation of modified asphalt performance using SHRP binder specification. Madison, WI: Wisconsin Dept. of Transportation, Division of Transportation Infrastructure Development, Bureau of Highway Construction, Pavements Section, 1997.

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5

Zhou, Haiping. Field test of polymer modified asphalt concrete: Murphy Road to Lava Butte section : The Dalles - California Highway, Deschutes County, Oregon : final report. Salem, Or: Oregon Dept. of Transportation, Research Unit, 1993.

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Armijo, Joseph D. Field experimental project utilizing asphalt modifiers: Construction and post construction report. [Bozeman, Mont.?]: [Montana State University?], 1991.

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7

Ifft, Charles. Evaluation of polymer modified asphalt in hot mix pavements. 1989.

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Book chapters on the topic "Modified asphalt concrete"

1

Albayati, Amjad H. "Mechanistic Evaluation of Lime-Modified Asphalt Concrete Mixtures." In 7th RILEM International Conference on Cracking in Pavements, 921–40. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4566-7_89.

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Gunka, Volodymyr, Iurii Sidun, Serhiy Solodkyy, and Nataliya Vytrykush. "Hot Asphalt Concrete with Application of Formaldehyde Modified Bitumen." In Proceedings of CEE 2019, 111–18. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27011-7_14.

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Ramesh, A., G. Abdul Khader, and M. Kumar. "The Effect of Using Acid-Modified Mixes on Performance of Asphalt Concrete." In Transportation Research, 757–70. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9042-6_60.

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Habbouche, Jhony, Peter E. Sebaaly, Elie Y. Hajj, and Murugaiyah Piratheepan. "Full-Scale Pavement Testing of a High Polymer Modified Asphalt Concrete Mixture." In RILEM Bookseries, 959–66. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-46455-4_122.

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Ogundipe, Olumide M., Omotola C. Aboloye, and Stephen O. Fatuase. "Evaluation of the Properties of Asphalt Concrete Modified with Crumb Rubber Using Marshall Test." In Lecture Notes in Civil Engineering, 469–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48679-2_44.

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Themeli, Andrea, Emmanuel Chailleux, Cyrille Chazallon, and Nicolas Bueche. "Low Temperature Behavior of Asphaltite Modified Binders and Asphalt Concretes." In Lecture Notes in Civil Engineering, 553–64. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48679-2_52.

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Sukobar, Machsus Machsus, Rachmad Basuki, Amalia Firdaus Mawardi, and Moh Firli Firdausi. "Use of Waste Low-Density Polyethylene (LDPE) as Bitumen Modifier in Asphalt Concrete-Binder Course (AC-BC) Mix." In ICSDEMS 2019, 187–94. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3765-3_18.

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Teltayev, Bagdat. "Fatigue Destruction of Asphalt Concrete Pavement: Self- Organization and Mechanical Interpretation." In Modified Asphalt. InTech, 2018. http://dx.doi.org/10.5772/intechopen.75536.

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Petrovich, Podolsky Vladislav, Lukashuk Alexandr Gennadievich, Tyukov Evgeny Borisovich, and Chernousov Dmitry Ivanovich. "The Enhancement of Asphalt Concrete Surface Rigidity Based on Application of Shungite-Bitumen Binder." In Modified Asphalt. InTech, 2018. http://dx.doi.org/10.5772/intechopen.76877.

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"SILE CHARACTERISTICS OF POLYMER MODIFIED ASPHALT CONCRETES." In Polymers in Concrete, 215–22. CRC Press, 2003. http://dx.doi.org/10.1201/9781482271829-32.

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Conference papers on the topic "Modified asphalt concrete"

1

Zimich, Vita. "Investigation of modified asphalt concrete." In ADVANCED MATERIALS IN TECHNOLOGY AND CONSTRUCTION (AMTC-2015): Proceedings of the II All-Russian Scientific Conference of Young Scientists “Advanced Materials in Technology and Construction”. AIP Publishing LLC, 2016. http://dx.doi.org/10.1063/1.4937870.

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Mazurek, Grzegorz. "The Viscoelastic Characteristics of the Asphalt Concrete Modified with Different Synthetic Waxes Using a Modified Huet- Sayegh Model." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.141.

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The article presents the results of dynamic modulus tests carried on the asphalt concrete (AC16W). The sinusoidal load was applied to the samples in accordance with DTC-CY method. The neat bituminous binder (penetration grade 35/50) was modified by means two synthetic waxes, coming from the Fischer-Tropsch raction, with various molecular weights and softening point temperature results (hard and softer). The relaxation phenomenon in terms of changes in complex modulus and phase angle was evaluated using the modified Huet-Sayegh (2S2P1D). Estimated model parameters pointed out that the addition of the synthetic wax with the high (hard wax) and the low (softer wax) molecular weight raised the stiffness of the bituminous binder in relation to the reference bitumen 35/50. The application of the modified Huet-Sayegh model showed that the presence of the synthetic wax in the bitumen significantly affected the stiffness modulus of considered asphalt concretes. Basing analysis on Cole-Cole diagram it was found significant differences in the viscoelastic behaviour between the reference asphalt concrete and the asphalt concretes with synthetic waxes. In contrast, there were no significant differences between viscoelastic properties of tested asphalt concretes modified, used in the experiment, synthetic waxes. Furthermore, the sensitivity to the loading time of asphalt concretes containing both synthetic waxes was marginal.
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Qiu, Xin, Winggun Wong, and Changbin Hu. "Laboratory Performance Evaluation on Polymer Modified Porous Asphalt Concrete." In GeoHunan International Conference 2009. Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/41042(349)3.

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Zhao, Lidong, Yinghua Zhao, Yingfang Fan, and Zhiming Liu. "Study on Road Application Performance of Asphalt Concrete Reinforced by Fiber and Modified Asphalt." In Eighth International Conference of Chinese Logistics and Transportation Professionals (ICCLTP). Reston, VA: American Society of Civil Engineers, 2009. http://dx.doi.org/10.1061/40996(330)375.

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Guo, Nai-sheng, Chong Wang, and Ying-hua Zhao. "Micromechanics-Based Relaxation Property Analysis of Crumb Rubber Modified Asphalt Concrete." In 11th International Conference of Chinese Transportation Professionals (ICCTP). Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41186(421)330.

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Garcia, Victor M., Mauricio Valenzuela, Alexandra Torres, Imad Abdallah, and Soheil Nazarian. "Performance Characterization of Asphalt Concrete Mixtures Modified with a Latex Additive." In International Airfield and Highway Pavements Conference 2019. Reston, VA: American Society of Civil Engineers, 2019. http://dx.doi.org/10.1061/9780784482469.009.

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Yongchun Cheng, Qinglin Guo, and Guojin Tan. "Creep characteristic analysis of asphalt concrete based on the modified Burgers model." In 2011 International Conference on Transportation and Mechanical & Electrical Engineering (TMEE). IEEE, 2011. http://dx.doi.org/10.1109/tmee.2011.6199667.

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VEGA ZAMANILLO, ANGEL, DANIEL CASTRO FRESNO, IRUNE INDACOECHEA VEGA, MIGUEL A, and PEDRO LASTRA GONZALEZ. "Asphalt concrete mixture with recycled aggregates and modified bitumen at reduced temperature." In Third International Conference on Advances in Civil, Structural and Mechanical Engineering- CSM 2015. Institute of Research Engineers and Doctors, 2015. http://dx.doi.org/10.15224/978-1-63248-062-0-34.

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Osman, S. A., and A. A. M. Adam. "Evaluation of Crumb Tire Rubber-Modified Hot Mix Asphalt Concrete in Sudan." In Second International Conference on Sustainable Construction Materials: Design, Performance, and Application. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412671.0021.

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Esmaeili, M. H., M. Naeimi, B. Soltani, and M. Afsartaha. "Reducing Slab Track Vibrations by Using Asphalt Concrete in the Substructure." In 2016 Joint Rail Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/jrc2016-5766.

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Vibrations of the slab track system propagated to the environment are estimated for railway tracks in which substructures are made from hot mix asphalt concrete (HMAC) and/or rubber modified asphalt concrete (RMAC). Sensitivity analysis is done to determine the ability of such layers to reduce vibrations with various frequencies, load amplitude and thicknesses of asphalt layers. Different types of substructures i.e. with or without the concrete base layer are used to assess propagated vibrations caused by the moving train. A finite element (FE) model of the ballast-less track substructure is built and the dynamic analysis is performed for various track models with asphalt layers. The FE model is in principle a two-dimensional plane-strain model with the parameters according to the common slab track systems. Ground vibrations i.e. dynamic accelerations are extracted at different recording points around the track with lateral distances 0, 10 and 20m from the loading axis. The outputs of numerical simulations for different substructure models are obtained and the possibilities of vibration reductions by various methods are discussed.
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Reports on the topic "Modified asphalt concrete"

1

Thompson, Marshall, and David Lippert. Flexible Pavement Design (Full-depth Asphalt and Rubblization): A Summary of Activities. Illinois Center for Transportation, July 2021. http://dx.doi.org/10.36501/0197-9191/21-021.

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This report summarizes activities undertaken to support and ensure that the Illinois Department of Transportation utilizes the best demonstrated available technology for design and construction of full-depth hot-mix asphalt (HMA) pavements and HMA pavements on rubblized Portland cement concrete pavement (PCCP). To achieve this goal, the researchers reviewed pavement design and special provisions for full-depth asphalt and rubblization projects as well as full-depth asphalt and rubblization project performance via condition surveys and deflection measurements. They also modified design inputs as needed from the review of literature and responded to specific issues related to full-depth asphalt and rubblization design and construction. The researchers studied 32 rubblization projects on the interstate system and found this rehabilitation technique is providing good to excellent performance that exceeds design expectations. They provided input on proposed changes to full-depth hot-mix asphalt pavement on rubblized PCCP specifications as well as provided input on the RoadTec 1105e material transfer device. Analysis of traffic speed deflectometer data obtained on several hot-mix asphalt and rubblized pavements resulted in the development of analysis algorithms.
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