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the investigation of ‘beestructures in asphalt binders

the investigation of ‘beestructures in asphalt binders

The Investigation of ‘Bee-Structures in Asphalt Binders

The objective of this research is to investigate the material properties of the bitumen micro- structure classified as a bee structure by Loeber et al.2This is necessary to understand the macro-scale properties these structures have on asphalt. Two types of asphalt binder will be analyzed using an atomic force microscope (AFM).

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The Investigation of 'Bee-Structures' in Asphalt Binders

The Investigation of Bee-Structures in Asphalt Binders Benjamin McCarron1 Xiaokong Yu2, Mingjiang Tao2, Nancy Burnham1 1 Department of Physics, Worcester Polytechnic Institute 2 Department of Civil and Environmental Engineering, Worcester Polytechnic Institute Major Qualifying Project 2011-2012 1 Abstract Asphalt binders (bitumen) are used heavily in

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The Investigation of 'Bee-Structures' in Asphalt Binders

The Investigation of ‘Bee-Structures’ in Asphalt Binders Benjamin McCarron1 Xiaokong Yu2, Mingjiang Tao2, Nancy Burnham1 1 Department of Physics, Worcester Polytechnic Institute 2 Department of Civil and Environmental Engineering, Worcester Polytechnic Institute Major Qualifying Project 2011-2012 1 Abstract Asphalt binders (bitumen) are used heavily in

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Recent advances in characterizing the “bee” structures and ...

As mentioned previously, bee structures and other surface features of asphalt binders have been extensively investigated by using AFM in existing studies. To examine if the surface features are indeed limited to sample surface or exit in bulk sample, a peeling technique was used to remove the surface features.

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The investigation of fly ash based asphalt binders

The investigation of fly ash based asphalt binders using atomic force microscope ... is a relatively new technique for investigation of construction ...

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Investigation of microscale aging behavior of asphalt ...

Mar 15, 2017  Microstructures of asphalt binders showing bee phase and matrix phase. Quantitative Nano mechanical (QNM) AFM is a surface force mapping technique with high spatial resolution, which simultaneously measures topography and mechanical property maps of asphalt binders [16], [17].

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Investigation on asphalt binder strength at low ...

A new strength test method for asphalt binders at low temperatures is investigated in this paper. A modified Bending Beam Rheometer (BBR), capable of applying loads at different rates, is used to obtain asphalt binder flexural strength.

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Recent advances in characterizing the “bee” structures and ...

Recent advances in characterizing the “bee” structures and asphaltene particles in asphalt binders Yuhong Wanga*, Kecheng Zhaob, Fangjin Lia, Qi Gaoc, King Wai Chiu Laic a Dept. of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China b Zhejiang Communications Construction Group Co., Ltd., Zhejiang Province, China

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Investigation of microscale aging behavior of asphalt ...

Some researchers related the bee structures to the presence of asphaltenes (Loeber et al. 1996, Pauli et al. 2001, Jäger et al. 2004, while others related it to the wax content in the asphalt ...

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Investigation of \u27Bee-Structures\u27 in Asphalt Binders ...

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Insights into Binder Chemistry, Microstructure ... - Asphalt

Asphalt binders behavior dependency ... Investigation of Low and High Temperature Properties of Plant-Produced RAP Mixtures Phase II, McDaniel and Huber Asphalt compatibility ... Including the bee-structures observed on the surface of asphalt thin-film samples by AFM ...

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Investigation of the optimal self-healing temperatures and ...

Jun 15, 2016  Two asphalt binders used in this research to study the ideal heating temperatures of asphalt binder were Penetration Grade bitumen 70 and 90 (named as Pen 70 bitumen and Pen 90 bitumen for short). The Pen 70 bitumen has a penetration of 69 (0.1 mm) at 25 °C and a softening point of 44.1 °C.

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The Investigation of Microscopic Moisture-Thermal Damage ...

Laboratory Investigation of Recycling for Aged SBS Modified Asphalt Cement Pavements and Materials: Recent Advances in Design, Testing and Construction April 2012 Creep-Recovery Behavior of Asphalt Binders Modified with SBS and PPA

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Measuring Adhesion Between Modified Asphalt Binders and ...

Jan 01, 2016  Adhesion between asphalt binders and aggregates is important to the performance of asphalt mixtures. Polymeric modifiers are added to improve the performance of different binders. Thus, it is essential to characterize quantitatively the adhesion between modified binders and aggregates.

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‪Xiaokong Yu‬ - ‪Google Scholar‬

The Investigation of “Bee-Structures” in Asphalt Binders. B McCarron, X Yu, M Tao, N Burnham. Qualifying Project. Worcester, MA, 2012. 22: 2012: ... Microstructural evolution of asphalt binder under combined action of moisture and pressure. MK Nivedya, TG Trottier, X Yu, M Tao, NA Burnham, RB Mallick ...

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Investigation of Microscale Aging Behavior of Asphalt ...

Jan 08, 2017  Investigation of Microscale Aging Behavior of Asphalt Binder Using Atomic Force Microscopy. Micro-scale aging behavior of asphalt binder has a significant influence on the stress-strain behavior of asphalt mixture. However, little is known about the aging behavior of the constituent micro-phases of asphalt.

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Changes in Nanoscaled Mechanical and Rheological ...

Aug 13, 2015  Aging of an asphalt binder causes the changes in the microstructure and, consequently, in the nanomechanical and rheological properties of the aged asphalt binder. Short-term aging on asphalt binders was simulated using rotating thin film oven (RTFO). These changes in the microstructure and nanomechanical and rheological properties were measured

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Rheological, physicochemical, and microstructural ...

Jun 01, 2021  The main reasons that no bee structures are observed in the unaged asphalt binder relate to asphalt binder covering with a thin layer of FSN as well as no aging effect on asphalt binder.

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Thermal, chemical and imaging analysis of Polyurethane ...

Oct 31, 2018  [1] Sun Z, Yi J, Huang Y, Feng D and Guo C 2016 Properties of asphalt binder modified by bio-oil derived from waste cooking oil Constr. Build. Mater 102 496-504. Go to reference in article Crossref Google Scholar [2] Mills-Beale J, You Z, Fini E, Zada B, Lee C H and Yap Y K 2014 Aging Influence on Rheology Properties of Petroleum Based Asphalt Modified

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INVESTIGATION OF THE FRACTURE HEALING AND

INVESTIGATION OF THE FRACTURE HEALING AND MECHANISM OF ASPHALT BINDERS Abstract By Xin Lu, PhD Washington State University July 2013 Chair: Shihui Shen The self-healing properties of viscoelastic asphalt materials have been widely recognized among pavement researchers which can result in extended service life of ...

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Avaliação de métodos de preparação de amostras de ligante ...

Nov 04, 2018  The atomic force microscope has been used for the microstructural characterization of asphalt binders from the identification of their constituent fractions. Moreover, recent studies have determined mechanical properties of the binder components, such as creep compliance and relaxation modulus, by indentation tests in the AFM. However, the preparation

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Juan Quiñones - Academia

The Investigation of 'Bee-Structures' in Asphalt Binders more. by Juan Quiñones. Research Interests: Materials Science. Download (.pdf)-by 30-day views-total views-followers.

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Insights into Binder Chemistry, Microstructure ... - Asphalt

Asphalt binders behavior dependency ... Investigation of Low and High Temperature Properties of Plant-Produced RAP Mixtures Phase II, McDaniel and Huber Asphalt compatibility ... Including the bee-structures observed on the surface of asphalt thin-film samples by AFM ...

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Investigation of rheological behavior of asphalt binder ...

The binder-aggregate dry bond strength of the various binder and aggregate combinations used in the asphalt mixtures was evaluated using the surface energy calculations combining the

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Rheological, physicochemical, and microstructural ...

Jun 01, 2021  The main reasons that no bee structures are observed in the unaged asphalt binder relate to asphalt binder covering with a thin layer of FSN as well as no aging effect on asphalt binder.

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Investigation of Low Temperature Cracking in Asphalt ...

In the US, the PG system has been used for more than a decade to select and characterize asphalt binders. In Europe, only recently certain tests were adopted to specify asphalt binders or bitumens. For example Hase and Oelkers (7) used the BBR to investigate the influence of polymer type on low temperature properties.

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microstructure of bituminous materials as displayed in ...

AFM of the binder part of the asphalt sample under investigation. The phase contrast image shows clearly the presence of crystals with bees inside in the circles (peri phase) within a continuum of perpetuum phase [12]. Figure 5. Phase contrast image of

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The Investigation of Microscopic Moisture-Thermal Damage ...

Laboratory Investigation of Recycling for Aged SBS Modified Asphalt Cement Pavements and Materials: Recent Advances in Design, Testing and Construction April 2012 Creep-Recovery Behavior of Asphalt Binders Modified with SBS and PPA

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Investigation of the Microcharacteristics of Asphalt ...

Aug 18, 2019  2.2.1. Preparation of Asphalt Mastics . A constant filler/asphalt (by mass) ratio of 1.0 was selected in accordance with Superpave specifications, which recommend a ratio within 0.6–1.2 [].Asphalt mastics were prepared following the optimized protocol to obtain homogeneous asphalt-filler mixes from a previous investigation [].The prepared mastics

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Influence of asphaltene content on mechanical bitumen ...

used as binder in hot mix asphalt (HMA). Due to its natural origin, there is a significant variability in its composition and material behavior depending on the crude oil source. Moreover, a huge number of molecules with very different chemical structure build up bitumen and makes it one of the most complex L. Eberhardsteiner () B. Hofko M ...

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Rheological and Microstructural Investigation of the ...

Utilization of RAP in asphalt pavements may lead to severe quality problems, mostly due to asphalt aging phenomenon. Within the scope of this study, the use of rejuvenators to improve the properties of RAP is investigated. Two different types of waste oils together with a commercial rejuvenator are used. The rejuvenated bitumen samples are evaluated from both rheological

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Optical characterization of temperature‐ and composition ...

An asphalt mixture is a composite composed of approximately 5% asphalt binder or bitumen and 95% mineral aggregates. Though only a small weight fraction, the bitumen is primarily responsible for a road's mechanical properties, and must be

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Investigation on the Short-Term Aging-Resistance of ...

In this reported work, thermoplastic polyurethane (TPU) was used as a reactive polymer modifying agent to prepare a modified-asphalt, using a high-speed shearing method. Physical performance tests of the TPU-modified asphalt were conducted before and after short-term aging, and the aging resistance

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PCCP - pubs.rsc

billion gallons of liquid asphalt (costing $19 billion) per year. 1-3 Added to that are the consumption of liquid asphalt to pave parking lots and driveways, seal cracks, stabilize the subgrade and base, and make roofing shingles. Accordingly, there have been several studies focusing on the characterization of asphalt binder at

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Microscale investigation of thin film surface ageing of ...

Mar 20, 2014  Morphology and kinetics of asphalt binder microstructure at gas, liquid and solid interfaces. Ramm A, Downer MC, Sakib N, Bhasin A. J Microsc, 276(3):109-117, 12 Nov 2019 Cited by: 0 articles PMID: 31696508

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