Asphalt binder performance grading of North Korea for Superpave asphalt mix-design

Background: The asphalt binder is considered a temperature-sensitive viscoelastic material. Temperature can cause some common distress of asphalt pavement, such as rutting (permanent deformation), which correlated with high-temperature environments, and thermal cracking, which correlated with low-temperature environments. Objective: This study aimed to establish asphalt binder Performance Grades (PGs) in the Yemeni region to ensure that the asphalt pavement design can effectively resist the distresses of rutting and cracking that occurred due to seasonal temperature changes. Methods: In order to determine the performance grades, the temperature zoning was performed by obtaining the last 10 years temperature data of 19 cities in Yemen gathered by the Yemeni Meteorological Authority. The collected data were analyzed based on the trend and statistical reliability. Three air-pavement temperature prediction models of Superpave, LTPP, and Oman model were used to predict air pavement temperatures. The local performance grades were computed using reliability levels of 50% and 98%. Since the dependent variables of latitude in the Superpave equation can more reflect the geographical locations of Yemeni regions rather than the other models, this study strongly approved the SHARP Superpave model to be used to determine the performance grades. Results: Based on the Superpave model with reliability analyses, performance grade maps were drawn. The most common performance grades recommended in this study for low traffic volume roads were PG64-10, and PG52-10. Conclusion: The findings of this study are highly significant and provide valuable decision support for pavement management and improve the transportation system in the Republic of Yemen.

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Temperature Zoning of Libya Desert for Asphalt Mix Design

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.638-640.1414 ◽

2014 ◽

Vol 638-640 ◽

pp. 1414-1426 ◽

Cited By ~ 4

Author(s):

Hassan Awadat Salem ◽

Djordje Uzelac ◽

Bojan Matic

Keyword(s):

Prediction Models ◽

Asphalt Binder ◽

Mix Design ◽

Empirical Measure ◽

Significant Difference ◽

Modified Asphalt Binder ◽

Asphalt Mix ◽

Project Location ◽

Libyan Desert ◽

Temperature Zoning

The current asphalt binder specifications in Libya are based on the Penetration Grade: penetration test is performed at 25°C. Penetration is an empirical measure of the consistency that is used as an empirical indicator of the rutting and fatigue susceptibility of asphalt binder, and is not related to pavement performance. The new mix design methodology developed under the Strategic Highway Research Program (SHRP), called the SUPERPAVE is a performance-based approach. The first step in the implementation of SUPERPAVE methodology is to establish high and low pavement temperatures for a location. The temperatures define the required Performance Grade (PG) of asphalt binder. This paper documents the initial ground work towards implementation of SUPERPAVE mix design for establishing high and low geographical temperature zones. The temperature zoning of Libya was carried out by using temperature data obtained from 8 weather stations. The SHRP and LTPP prediction models were utilized for predicting pavement temperatures. A significant difference was observed between the predicted pavement temperatures from both the models. The SHRP model gives higher, high temperature PG grade providing additional protection against rutting. Since rutting is the most common distress on flexible pavements in Libya , the SHRP models at 50% level of reliability is recommended. The PG of roads that located in Libyan desert are classified to three zones (PG70-10, PG76-10 and PG82-10.PG 76-10 binder seems to be the most common grade that encompasses more than 70% area of Libya desert .However, currently none of the two local refineries produce the bitumen under penetration grade 60-70,that grade equivalent to PG 82-10 binder, thus it should be a concern for highway or the project location. The polymer modified asphalt binder are not produced by Libya refineries.

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RESILIENT BEHAVIOUR OF HOT MIXED AND CRACK SEALED ASPHALT CONCRETE UNDER REPEATED LOADING

Technological and Economic Development of Economy ◽

10.3846/13928619.2007.9637776 ◽

2007 ◽

Vol 13 (1) ◽

pp. 56-60 ◽

Cited By ~ 3

Author(s):

Hassan Ziari ◽

Mahmud Ameri ◽

Mohammad Mahdi Khabiri

Keyword(s):

Asphalt Concrete ◽

Hot Mix Asphalt ◽

Permanent Deformation ◽

Asphalt Binder ◽

Mix Design ◽

Repeated Loading ◽

Test Procedures ◽

The Road ◽

Asphalt Mix ◽

Practical Information

Bituminous mixes are becoming increasingly important in the road industry. The road engineers identify rutting as a major source of distress in Hot Mix Asphalt (HMA) pavements. The Asphalt Mix Design Marshal method adequately addresses the aggregate and asphalt binder properties that contribute to permanent deformation. However, there is no laboratory test currently at hand to quickly predict permanent deformation susceptibility of HMA. The main purpose of this paper is to provide practical information of laboratory samples for practitioners and mix designers. Thus, relevant test procedures and results of tests conducted are reported in this paper. Two resilient behaviours of cracked sealed asphalt concrete were studied by varying temperature and time of loading to understand the crack sealed pavement behaviour under Iran conditions.

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Selection of reclaimed asphalt pavement sources and contents for asphalt mix production based on asphalt binder rheological properties, fuel requirements and greenhouse gas emissions

Journal of Cleaner Production ◽

10.1016/j.jclepro.2011.10.008 ◽

2012 ◽

Vol 23 (1) ◽

pp. 20-27 ◽

Cited By ~ 40

Author(s):

Ali Jamshidi ◽

Meor Othman Hamzah ◽

Zulkurnain Shahadan

Keyword(s):

Greenhouse Gas Emissions ◽

Greenhouse Gas ◽

Rheological Properties ◽

Asphalt Pavement ◽

Asphalt Binder ◽

Reclaimed Asphalt Pavement ◽

Gas Emissions ◽

Reclaimed Asphalt ◽

Asphalt Mix ◽

Selection Of

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The use of compressible packing model and modified asphalt binders in high-modulus asphalt mix design

Road Materials and Pavement Design ◽

10.1080/14680629.2018.1536611 ◽

2018 ◽

Vol 21 (4) ◽

pp. 1061-1077 ◽

Cited By ~ 1

Author(s):

Taher Baghaee Moghaddam ◽

Hassan Baaj

Keyword(s):

Mix Design ◽

Asphalt Binders ◽

High Modulus ◽

Modified Asphalt ◽

Packing Model ◽

Asphalt Mix ◽

Compressible Packing Model

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The use of Crushed Waste Glass as a Partial Replacement of Fine Aggregates in Asphalt Concrete Mixtures (Glassphalt)

Journal of Engineering Research and Reports ◽

10.9734/jerr/2021/v21i417455 ◽

2021 ◽

pp. 1-10

Author(s):

Gbadamosi Aderemi Tobi ◽

Ogunsuyi Raphael Abidemi ◽

Ojo Meshach Felix

Keyword(s):

Asphalt Binder ◽

Asphalt Mixture ◽

Waste Glass ◽

Partial Replacement ◽

Glass Waste ◽

Coarse Aggregates ◽

Rapid Economic Growth ◽

Marshall Test ◽

Bitumen Content ◽

Asphalt Mix

With the rapid economic growth and continuously increased consumption, a large amount of glass waste materials is generated; this study investigated the effect of crushed waste glass as filler and also as an aggregate in the asphalt binder course. It compares the glassphalt mix with the specification range at different percentages to meet specifications limit according to Nigeria roads and bridges reverse book of 1997 Waste glass are cleaned and crushed from the glass bottles and added to the asphalt as a filler and as a replacement for coarse aggregates, the marshal method is used to determine the optimum bitumen content and evaluate the properties of the asphalt mix. However, 24 samples were prepared in total, 12 samples each for the asphalt mix used to determine the optimum bitumen content and the other 12 samples for the glassphalt mix used to find out the effect of adding the different percentages of crushed waste glass to the asphalt mixture. The Marshall test carried out on the asphalt mixtures showed that the optimum bitumen content of bitumen was found out to be 6.2% of the asphalt mix by weight. Also, Marshall Test carried out on the glassphalt mix showed the optimum percentage of glass used in the binder course of the weights of aggregates in the asphalt mix. The result of this experiment is been checked to be consistent with the Nigeria road and bridges reverse book of 1997, i.e. Marshall Stability, flow, bulk density, and air voids.

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Data Mining Statewide Department of Transportation Volumetrically Designed Asphalt Mixture Records

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/03611981211061356 ◽

2021 ◽

pp. 036119812110613

Author(s):

Ben C. Cox ◽

Jonathan Easterling ◽

W. Griffin Sullivan ◽

Alex Middleton ◽

Isaac L. Howard

Keyword(s):

Asphalt Binder ◽

Asphalt Mixture ◽

Mechanical Tests ◽

Unintended Consequences ◽

Mix Design ◽

Department Of Transportation ◽

Database Analysis ◽

Societal Pressure ◽

Asphalt Content ◽

Asphalt Paving

In recent years, the asphalt paving industry has been strained by numerous factors including increased asphalt binder costs, funding that has not kept up with material costs, increased societal pressure to recycle, and deteriorating pavement networks. Mix design should account for the market in which it is used, which is very different now than when today’s volumetric mix design practices were developed (many of the aforementioned factors were less present). Given this reality, a statewide database of all 1,452 approved mix designs in Mississippi from 2005 to 2018 was compiled and analyzed, and the objective of this paper is to present findings, trends, and unintended consequences of exclusive reliance on volumetrics. With volumetrics-only mix design, asphalt content is primarily controlled by voids in mineral aggregate (VMA), which is influenced by aggregate bulk specific gravity (Gsb). Minor Gsb deviations (i.e., within AASHTO d2 s limits), can significantly affect VMA, so much so that 99% of Mississippi’s mixes could be failing VMA while reported VMA passes. This allows mix manipulation and economization, with 0.8% asphalt content reductions possible while still meeting volumetric requirements. Recycled materials can exacerbate this issue, and common approaches to increase asphalt content (decreasing design gyration level or using finer gradations) are ineffective with fixed VMA requirements. Overall, the mix design database analysis agrees with numerous smaller studies but does so with an entire state’s actual practice. This presents a compelling case that volumetrics-only mix design has limitations, and supports ongoing efforts to reintegrate mechanical tests.

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Initial Approach to Performance (Balanced) Mix Design: The Virginia Experience

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198118823732 ◽

2019 ◽

Vol 2673 (2) ◽

pp. 335-345 ◽

Cited By ~ 6

Author(s):

Stacey D. Diefenderfer ◽

Benjamin F. Bowers

Keyword(s):

Performance Testing ◽

Performance Criteria ◽

Mix Design ◽

Department Of Transportation ◽

Innovative Methods ◽

Asphalt Mix ◽

Performance Additives ◽

Virginia Department ◽

Selection Of

Performance mix design (PMD) of asphalt mixtures, often referred to as balanced mix design, is a design methodology that incorporates performance testing into the mix design process. The Virginia Department of Transportation (DOT), like many owner agencies, is interested in ways to specify asphalt mix designs better in an effort to make its roadway network more sustainable, longer lasting, and more economical. By adding performance criteria through a PMD framework, that goal can be achieved. Further, a PMD framework should allow for the development of new, innovative methods to increase pavement recyclability, new performance additives, and other means to enhance pavement performance. This paper provides details and documentation of the approach being taken by the Virginia DOT in their efforts to develop a PMD specification. Aspects of development presented include PMD method options, selection of performance tests, and determination of acceptance criteria. A discussion about validating specifications with in-service performance data and addressing quality control and quality assurance is also provided. Although additional work is needed for full development and implementation, the methodology being applied has been found to provide useful outcomes for the Virginia DOT even in the initial stages of development.

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