High-viscosity modified asphalt mixtures for double-layer porous asphalt pavement: Design optimization and evaluation metrics

The interlayer bonding of double-layer porous asphalt pavement will show more variations with different construction technologies, such as one-step molding by double-layer (hot on hot) paver, or paving layer by layer (hot on cold) with or without tack coat, and the variations will definitely have influences on pavement structure. Different interlayer technologies are studied in this paper on three levels including simulation experiments on specimen by indoor preparation, calculation of pavement mechanics, and construction of testing road, so that optimal interlayer bonding technology for double-layer porous asphalt pavement is discussed in combination with its effect on permeability.

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Rubber Modified Asphalt Mixture Properties and Mechanical Testing

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.105-107.810 ◽

2011 ◽

Vol 105-107 ◽

pp. 810-817 ◽

Cited By ~ 2

Author(s):

Rong Hui Zhang ◽

Jia Liu ◽

Jian Chao Huang ◽

Yi Fu

Keyword(s):

Asphalt Pavement ◽

Asphalt Mixture ◽

Asphalt Mixtures ◽

Specimen Preparation ◽

Twin Screw Extrusion ◽

Modified Asphalt ◽

Flexural Tensile Strength ◽

Screw Extrusion ◽

Twin Screw ◽

Compound Particle

To solve the high-temperature rutting problem of asphalt pavement, the old rubber of the tire rubber and plastic of general polyethylene waste composite modified asphalt mixture is proposed. The plastic and rubber compound particle was made by the rubber through efficient desulfurization additives, pre-swelling, twin-screw extrusion equipment. The particles mixed with the asphalt mixtures specimen preparation and the dynamic stability experiments, composite beam fatigue experiments, flexural tensile strength and modulus experiments and anti-reflective pavement cracks and other mechanical experiments are performed. The comparative data obtained by the rubber and plastic composited modified asphalt mixtures and SBS asphalt mixtures prove that the rubber and plastic composited modified asphalt mixtures have excellent rutting resistance and fatigue resistance.

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Laboratory Investigation of the Adhesion and Self-Healing Properties of High-Viscosity Modified Asphalt Binders

Transportation Research Record Journal of the Transportation Research Board ◽

10.1177/0361198120902990 ◽

2020 ◽

Vol 2674 (1) ◽

pp. 307-318 ◽

Cited By ~ 1

Author(s):

Mingjun Hu ◽

Daquan Sun ◽

Tong Lu ◽

Jianmin Ma ◽

Fan Yu

Keyword(s):

Water Immersion ◽

Gel Permeation Chromatography ◽

High Viscosity ◽

Healing Time ◽

Adhesion Property ◽

Asphalt Binders ◽

Self Healing ◽

Porous Asphalt ◽

Modified Asphalt ◽

Water Damage

Water damage often occurs on porous asphalt pavement during service life because of the well-developed pore structure. Determining the adhesion and adhesion healing properties of high-viscosity modified asphalt (HVMA) under water condition is beneficial to understand the water damage process of porous asphalt. In this study, the modified binder bond strength test was first conducted to investigate the adhesion property and self-healing behavior of HVMA at different conditions. Then, the surface energy test was carried out to further characterize the differences in adhesion property of HVMA. Moreover, the gel permeation chromatography test and fluorescence microscopic test were used to investigate the influence of chemical composition and polymer morphology on the adhesion property of HVMA. Results show that the presence of water reduces the adhesion property of HVMA. The addition of polymers leads to an increasing adhesion strength and a decreasing self-healing ability of HVMA. The self-healing ability of HVMA improves with the increase of temperature, but also shows a decreased trend when the healing time is long at high-temperature water immersion. The effect of polymers on the adhesion property of asphalt has two aspects. First, the swelling of polymers leads to an increasing content of polar heavy components in HVMA, thus enhancing polarity adsorption between asphalt and aggregate. Moreover, a polymer-centered interfacial diffusion layer can be formed during the adsorption of light components, which increases the overlapping area of structural asphalt between adjacent aggregates. This can also improve the adhesion property at the asphalt–aggregate interface.

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The Analyses and Calculation for Thermal Stresses of SBR Modified Asphalt Pavement

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.4112 ◽

2011 ◽

Vol 243-249 ◽

pp. 4112-4118

Author(s):

Min Jiang Zhang ◽

Gang Chen ◽

Li Xia Hou ◽

Li Ping Zhang

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Thermal Stresses ◽

Asphalt Pavement ◽

Asphalt Mixture ◽

Asphalt Mixtures ◽

The Finite Element Method ◽

Temperature Stresses ◽

Modified Asphalt ◽

Temperature Performance

Based on the viscoelasticity theory and the data of creep test, Burgers model was established, which was used to study the viscoelastic property of SBR asphalt mixtures, and the viscoelastic constitutive relation was obtained. Using the finite element method, the temperature stresses field was calculated under the environmental conditions and the thermal stresses of SBR modified asphalt pavement was given at the last part of this paper. The study indicated that SBR modified asphalt mixtures have the advantage over common asphalt mixture in low-temperature performance.

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Special Issue on Nano-Modified Asphalt Binders and Mixtures to Enhance Pavement Performance

Applied Sciences ◽

10.3390/app10124187 ◽

2020 ◽

Vol 10 (12) ◽

pp. 4187

Author(s):

Luís Picado-Santos ◽

João Crucho

Keyword(s):

Asphalt Pavement ◽

Asphalt Mixtures ◽

Asphalt Binders ◽

Pavement Performance ◽

Special Issue ◽

Modified Asphalt ◽

Pavement Layers

This Special Issue is dedicated to the use of nanomaterials for the modification of asphalt binders to support the analysis of the relevant properties and to determine if the modification indicated a more efficient use of asphalt mixtures’ fabrication or their modification in the context of asphalt mixtures’ fabrication and the improvement (or lack thereof) of these last ones to constitute effective asphalt pavement layers [...]

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Kajian Penambahan RejIRE pada Aspal Modifikasi Crumb Rubber serta Kinerjanya pada Campuran Beraspal Panas

MEDIA KOMUNIKASI TEKNIK SIPIL ◽

10.14710/mkts.v24i2.18996 ◽

2019 ◽

Vol 24 (2) ◽

pp. 148

Author(s):

Sri Mulyani ◽

Nono Nono ◽

Nyoman Suaryana

Keyword(s):

Heavy Traffic ◽

Permanent Deformation ◽

Crumb Rubber ◽

High Viscosity ◽

Asphalt Mixtures ◽

Modified Asphalt ◽

Low Viscosity ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

Rubber Modification

Asphalt polymer has superior characteristics than conventional asphalt. Styrene Butadiene Styrene (SBS) is a polymer that has proven its performance in heavy traffic, but it must be imported and expensive. Crumb rubber have high potential to be used as an asphalt modifier. Asphalt modified crumb rubber has high viscosity and is not homogeneous, so that the utilization cannot be delayed. This reduces workability in the field. This study aims to obtain asphalt modified crumb rubber which is easier to use by adding materials that do not affect its performance. RejIRE is a low viscosity additive to restore the properties of bitumen on crumb rubber modified. Experiments were carried out by adding variations in RejIRE levels to crumb rubber modified asphalt to determine its characteristics. Continued investigation of the performance of hot paved mixtures for wearing courses compared to asphalt mixtures with Pen 60/70 asphalt and SBS modified asphalt mixtures. The result is the addition of 0.75% RejIRE on asphalt crumb rubber modification have high workability. Overall the performance of the mix with SBS modified asphalt is better, but the mixture of hot paved with modified asphalt crumb rubber has a resistance to permanent deformation superior to the other paved mixtures.

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Research of Mechanical Properties of Asphalt Pavement Materials with WMA and RAP

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.204-208.3934 ◽

2012 ◽

Vol 204-208 ◽

pp. 3934-3937 ◽

Cited By ~ 1

Author(s):

Bao Yang Yu ◽

Yu Wang ◽

Min Jiang Zhang

Keyword(s):

Mechanical Properties ◽

Tensile Strength ◽

Dynamic Modulus ◽

Asphalt Pavement ◽

Asphalt Mixture ◽

Asphalt Mixtures ◽

Indirect Tensile Strength ◽

Porous Asphalt ◽

Compaction Energy ◽

Indirect Tensile

The objectives of this paper are to characterize the mechanical properties of porous asphalt pavement mixtures containing RAP and a WMA additive using Super pave gyratory compactor and dynamic modulus testing. Four types of asphalt mixtures were evaluated in this study. This study evaluated compaction energy index, permeability, indirect tensile strength, and dynamic modulus for all types of porous asphalt mixtures. All of the asphalt mixtures meet the typical minimum coefficient of permeability in this study. In addition, only a slight decrease in was found when WMA additive was added to the porous asphalt mixture containing RAP. For indirect tensile strength testing, WMA containing RAP was found to have the highest tensile strength among all of the mixtures tested.

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