The Experimental Research on Durability of Sasobit Modified Asphalt

Sasobit has been applied into asphalt successfully since 1997. From then on, a lot of studies emphasizes on how Sasobit can lower asphalt’s viscosity and reduce poison odor emission. However, the durability of asphalt containing Sasobit is ignored to research. This paper aimed to analyze Sasobit impact on the durability of asphalt. In this study, the Sasobit modified asphalt was blended using different Sasobit contents of 2%, 3%, 4% and 5% by weight of asphalt into the base asphalt (SBS modified asphalt). The Rolling Thin Film Oven test (RTFO) and Pressure Aging Vessel test (PAV) were conducted to simulate the mixing and construction aging and in-service aging of asphalt. The properties and micro-structure of the base asphalt and Sasobit modified asphalt in three different aging states (original state, mixing and construction aging state and in-service aging state) were tested by using the Penetration-Grade system, Performance-Grade system and fluorescence microscope. The aging indexes of the base asphalt and Sasobit modified asphalt were calculated to compare their durability. It was evident that the durability of the Sasobit modified asphalt was mostly affected by the type of base asphalt and Sasobit had a little impaction on the durability of the asphalt.

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Pavement Performance and Anti-Aging Property of Microscale Flyash/SBS Modified Asphalt

Materials Science Forum ◽

10.4028/www.scientific.net/msf.663-665.1333 ◽

2010 ◽

Vol 663-665 ◽

pp. 1333-1336

Author(s):

Xin De Tang ◽

Xiang Li Kong ◽

Zhong Guo He ◽

Jun Li

Keyword(s):

Thin Film ◽

Thermal Stability ◽

Softening Point ◽

Pavement Performance ◽

Melt Blending ◽

Oven Test ◽

Modified Asphalt ◽

Deformation Ability ◽

Aging Property ◽

Sbs Modified Asphalt

Microscale flyash/SBS composite modified asphalts (CMA) were prepared by melt blending. Rolling thin film oven test (RTFOT) was employed to study the anti-aging property. Both flyash and SBS disperse homogeneously in the base asphalt, which lead to an improvement in terms of toughness, strength, and thermal stability. Moreover, microscale flyash plays a significant role in the CMA. The effect of flyash on the properties of SBS modified asphalt appears as a decreasing penetration, an increasing softening point, and a decreasing ductility. The anti-deformation ability under high temperature of the CMA improved significantly. In comparison with that of the base asphalt, the softening point of the CMA decreases after aging, which maybe attribute to the different rheological properties between the CMA and the base asphalt. Compared to that of SBS modified asphalt, the anti-aging property of CMA improved significantly. This demonstrates that the microstructure of flyash can prevent oxygen from diffusing and permeating.

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Effect of Waste Edible Animal Oil on Physical Properties of Aged Asphalt

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.599.130 ◽

2014 ◽

Vol 599 ◽

pp. 130-134 ◽

Cited By ~ 2

Author(s):

Yang Sang ◽

Mei Zhu Chen ◽

Jin Wen ◽

Bin Bin Leng ◽

Shao Peng Wu

Keyword(s):

Thin Film ◽

Physical Properties ◽

Softening Point ◽

Asphalt Binders ◽

Oven Test ◽

Modified Asphalt ◽

Aged Asphalt ◽

Sbs Modified Asphalt

In order to explore the feasibility of waste edible animal oil used as the asphalt rejuvenator, this study investigated the effect of waste edible animal oil on softening point, penetration, ductility and viscosity of aged asphalt binders. The aged asphalt binders were obtained from the indoor simulating aging processes by using Thin Film Oven Test (TFOT) and Pressure Aging Vessel (PAV). The results show that the dosage of waste animal oil has different effect on physical properties of aged asphalt. Both 70# asphalt and SBS modified asphalt have the optimal content of waste edible animal oil to achieve the best physical properties. The optimal contents of waste edible animal oil for 70# asphalt and SBS modified asphalt are 6% and 4%, respectively.

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PS-MMT/SBS Composite Modified Asphalt: Preparation and Aging Property

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.168-170.912 ◽

2010 ◽

Vol 168-170 ◽

pp. 912-915

Author(s):

De Jie Zhou ◽

Nian Feng Han ◽

Xin De Tang

Keyword(s):

Thin Film ◽

Thermal Stability ◽

Softening Point ◽

In Situ Polymerization ◽

Melt Blending ◽

Oven Test ◽

Modified Asphalt ◽

Aging Property ◽

Sbs Modified Asphalt

The PS-MMT was synthesized through intercalating styrene monomer into the layer of MMT by in-situ polymerization. Composite modified asphalts with PS-MMT and SBS were prepared by melt blending. Rolling thin film oven test (RTFOT) was carried out to study the aging property. The results demonstrate that both modified MMT and SBS homogeneously disperse in the base asphalt, which lead to an improvement in terms of toughness, strength, and thermal stability. Impact of the PS-MMT on the properties of SBS modified asphalt appears as a decreasing penetration, an increasing softening point, and a decreasing ductility. Compared with that of SBS modified asphalt, the anti-aging property of PS-MMT /SBS modified asphalt was greatly improved.

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Preparation and Aging Property of Nannocomposite CaCO3/SBS Modified Asphalts

Materials Science Forum ◽

10.4028/www.scientific.net/msf.688.213 ◽

2011 ◽

Vol 688 ◽

pp. 213-216 ◽

Cited By ~ 3

Author(s):

Xin De Tang ◽

Zhong Guo He ◽

Xin Kai Man ◽

De Yang Zhang

Keyword(s):

Thin Film ◽

Softening Point ◽

Melt Blending ◽

Nano Structure ◽

Oven Test ◽

Modified Asphalt ◽

Deformation Ability ◽

Aging Property ◽

Sbs Modified Asphalt ◽

Oxidative Ageing

Composite modified asphalts with nanoscale calcium carbonate (CaCO3) and SBS were prepared by melt blending. Rolling thin film oven test (RTFOT) was carried out to study the aging property. The results demonstrate that both nano CaCO3 and SBS show homogeneous dispersion in the base asphalt, which lead to an improvement in terms of toughness, strength, and thermal stability. Influence of nano CaCO3 on the properties of SBS modified asphalts appears as a decreasing penetration, an increasing softening point, and a decreasing ductility. The anti-deformation ability under low temperature of nano CaCO3/SBS modified asphalts improved significantly. The softening point of nano CaCO3/SBS modified asphalt decreases after aging, in contrast to that of the base asphalt, which can be ascribed to the different rheological peoperties between nano CaCO3/SBS modified asphalt and the base asphalt. Compared with that of SBS modified asphalt, the anti-ageing property of nano CaCO3/SBS modified asphalts improved significantly. This indicates that nano structure of CaCO3 in modified asphalt can prevent oxygen from diffusing and permeating in matrix and the thermo-oxidative ageing of base asphalt and SBS slows down.

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Effect of Aging on the Low Temperature Performance of Asphalt Binder

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.438-439.369 ◽

2013 ◽

Vol 438-439 ◽

pp. 369-372

Author(s):

Ning Li Li ◽

Xin Po Zhao ◽

Cai Li Zhang ◽

Hu Hui Li ◽

Qing Yi Xiao

Keyword(s):

Thin Film ◽

Low Temperature ◽

Asphalt Pavement ◽

Asphalt Binder ◽

Bending Beam Rheometer ◽

Oven Test ◽

Modified Asphalt ◽

Temperature Performance ◽

Different Types ◽

Low Temperature Performance

During the service of asphalt pavement, the aging makes asphalt binder become brittle, gradually lose flexibility and adhesion. All these result in the low-temperature properties of asphalt pavement to be poor. This paper conducts the rolling thin film oven test (RTFOT) and pressure aging vessel (PAV) test on base asphalt and rubber-modified asphalt respectively. The bending beam rheometer (BBR) test was conducted on original asphalts, rolling thin film oven test (RTFOT) residuals and RTFOT + pressure aging vessel (PAV) residuals of base asphalt and rubber-modified asphalt respectively. Results indicate that the low-temperature properties of all aged asphalts were declined. The attenuation of low-temperature properties of RTFOT + PAV residuals is larger than that of the RTFOT residuals. The attenuation of different types of asphalt is different. From the overall trend, effect of aging on the low-temperature properties of asphalt binder reduced as the test temperature reduction. The rubber-modified asphalt has superior low-temperature performance than that of base asphalt, and its low-temperature performance decreases more slowly than the base asphalt.

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Rolling Thin Film Oven Test and Pressure Aging Vessel Conditioning Parameters: Effect on Viscoelastic Behavior and Binder Performance Grade

Transportation Research Record Journal of the Transportation Research Board ◽

10.3141/2574-12 ◽

2016 ◽

Vol 2574 (1) ◽

pp. 111-116 ◽

Cited By ~ 8

Author(s):

Bernhard Hofko ◽

Markus Hospodka

Keyword(s):

Thin Film ◽

Viscoelastic Behavior ◽

Oven Test ◽

Performance Grade

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Using Molecular Dynamics and Experiments to Investigate the Morphology and Micro-structure of SBS Modified Asphalt binder

Materials Today Communications ◽

10.1016/j.mtcomm.2021.103082 ◽

2021 ◽

pp. 103082

Author(s):

Manman Su ◽

Juanlan Zhou ◽

Jingzhou Lu ◽

Wei Chen ◽

Hongliang Zhang

Keyword(s):

Molecular Dynamics ◽

Asphalt Binder ◽

Micro Structure ◽

Modified Asphalt ◽

Modified Asphalt Binder ◽

Sbs Modified Asphalt

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Evaluation of Properties and Micro-Characteristics of Waste Polyurethane/Styrene-Butadiene-Styrene Composite Modified Asphalt

Polymers ◽

10.3390/polym13142249 ◽

2021 ◽

Vol 13 (14) ◽

pp. 2249

Author(s):

Bei Chen ◽

Fuqiang Dong ◽

Xin Yu ◽

Changjiang Zheng

Keyword(s):

Low Temperature ◽

Performance Test ◽

Permanent Deformation ◽

Modified Asphalt ◽

Basic Performance ◽

Styrene Butadiene Styrene ◽

Styrene Butadiene ◽

Sbs Modified Asphalt ◽

And Storage ◽

Butadiene Styrene

In order to solve the problems caused by asphalt diseases and prolong the life cycle of asphalt pavement, many studies on the properties of modified asphalt have been conducted, especially polyurethane (PU) modified asphalt. This study is to replace part of the styrene-butadiene-styrene (SBS) modifier with waste polyurethane (WP), for preparing WP/SBS composite modified asphalt, as well as exploring its properties and microstructure. On this basis, this paper studied the basic performance of WP/SBS composite modified asphalt with a conventional performance test, to analyze the high- and low-temperature rheological properties, permanent deformation resistance and storage stability of WP/SBS composite modified asphalt by dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The microstructure of WP/SBS composite modified asphalt was also observed by fluorescence microscope (FM) and Fourier transform infrared spectroscopy (FTIR), as well as the reaction between WP and asphalt. According to the results of this study, WP can replace SBS as a modifier to prepare WP/SBS composite modified asphalt with good low-temperature resistance, whose high-temperature performance will be lower than that of SBS modified asphalt. After comprehensive consideration, 4% SBS content and 15% WPU content (4 S/15 W) are determined as the suitable types of WPU/SBS composite modified asphalt.

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