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Topic

Asphalt

About: Asphalt is a(n) research topic. Over the lifetime, 20173 publication(s) have been published within this topic receiving 176205 citation(s). The topic is also known as: bitumen & asphaltum.

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Papers
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Journal ArticleDOI: 10.1016/J.CONBUILDMAT.2005.07.007
Abstract: This paper is a review of research that has been conducted on polymer modified binders over the last three decades. Polymer modification of asphalt binders has increasingly become the norm in designing optimally performing pavements, particularly in the United States, Canada, Europe and Australia. Specific polymers that have been used include rubber, SBR, SBS and Elvaloy®. Specifications have been designed and pre-existing ones modified to capture the rheological properties of polymer modified binders. The elastic recovery test is good at determining the presence of polymers in an asphalt binder, but is less successful at predicting field performance of the pavement.

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Topics: Asphalt (50%)

697 Citations


Journal ArticleDOI: 10.1002/CJCE.5450820403
Jacob H. Masliyah1, Zhiang Joe Zhou1, Zhenghe Xu1, Jan Czarnecki2  +1 moreInstitutions (2)
Abstract: The current state of knowledge on the fundamentals of bitumen recovery from Athabasca oil sands using water-based extraction methods is reviewed. Instead of investigating bitumen extraction as a black box, the bitumen extraction process has been discussed and analyzed as individual steps: Oil sand lump size reduction, bitumen liberation, aeration, flotation and interactions among the different components that make up an oil sand slurry. With the development and adoption of advanced analytical instrumentations, our understanding of bitumen extraction at each individual step has been extended from the macroscopic scale down to the molecular level. How to improve bitumen recovery and bitumen froth quality from poor processing ores is still a future challenge in oil sands processing.

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Topics: Oil sands (61%), Asphalt (57%)

407 Citations


Open access
01 Oct 1993-
Abstract: A result of the Strategic Highway Research Program's asphalt research is the development of performance-based specifications for asphalt binders and mixtures to control 3 distress modes: rutting; fatigue cracking; and thermal cracking. The SHRP A-005 project developed detailed pavement performance models to support these binder and mixture specifications and performance-based mixture designs. This report documents the findings of this extensive research effort and provides supporting data for the performance-based specifications and mixture design procedure called SUPERPAVE. The A-005 contract developed and used a sophisticated, mechanistic-based pavement performance model to define the relationships between asphalt binder and mixture properties and pavement distress. A comprehensive pavement performance model was developed that predicts the amount of fatigue cracking, thermal cracking and rutting in asphalt concrete pavements with time, using results from the accelerated laboratory tests. The pavement performance models for each distress were also used to confirm the relevant binder and mixture properties established by other SHRP contractors. The model has 3 parts: a mixture evaluation model; a pavement response model; and a pavement distress model.

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Topics: Asphalt concrete (62%), Asphalt (50%)

386 Citations


Journal ArticleDOI: 10.1016/J.CONBUILDMAT.2005.08.014
Süreyya Tayfur, Halit Ozen1, Atakan Aksoy2Institutions (2)
Abstract: The purpose of this study is to evaluate mechanical properties of control and modified asphalt mixtures. Conventional and five modified asphalt mixtures were studied on hot mix asphalt permanent deformation resistance. Amorphous polyalphaolefin, cellulose fiber, polyolefin, bituminous cellulose fiber and styrene butadiene styrene were used as modifiers. Indirect tensile strength, indirect tensile, static and repeated creep and LCPC wheel tracking tests were used for different loading conditions and temperatures. Research was focused on comparing the interaction between LCPC wheel tracking and other mechanical tests. According to the LCPC wheel tracking and repeated creep test results SBS mixtures were found as the most resistance mixtures in view of the rutting. Additives performed different performance levels but showed more resistance to permanent deformation according to the conventional mixtures. As far as the static creep test results are concerned there are controversial results because conventional mixtures are better. It is thought that this result may stem from the static behavior of the load and rheological change of bitumen with modifiers.

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Topics: Creep (50%), Asphalt (50%)

377 Citations


Patent
Bertram T Willman1Institutions (1)
06 Apr 1981-
Abstract: A method for treating a field containing viscous oil or bitumen for subsequent production is described. The steps central to the process are drilling a horizontal well within the oil-bearing stratum, and heating the oil in the vicinity of the horizontal well to produce a hot liquid corridor. The open borehole is filled and the oil in the heated corridor is displaced from one end to the other. The corridors may be connected in various configurations to effectively displace a high percentage of oil in a particular field.

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Topics: Petroleum (60%), Unconventional oil (60%), Steam injection (59%) ...read more

362 Citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202258
20211,023
20201,340
20191,446
20181,334
20171,393

Top Attributes

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Topic's top 5 most impactful authors

Shaopeng Wu

121 papers, 2.2K citations

Zhanping You

116 papers, 4K citations

Louay N. Mohammad

59 papers, 1.1K citations

Mihai Marasteanu

45 papers, 980 citations

Baoshan Huang

40 papers, 2.1K citations

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