Study on aging behavior and prediction of SBS modified asphalt with various contents based on PCA and PLS analysis

2020 ◽  
Vol 265 ◽  
pp. 120732 ◽  
Author(s):  
Meng Xu ◽  
Yuzhen Zhang ◽  
Pinhui Zhao ◽  
Cheng Liu
Keyword(s):  
Aging Behavior ◽  
Modified Asphalt ◽  
Pls Analysis ◽  
Sbs Modified Asphalt

Application of Nonlinear Differential Dynamic Model to Evaluate Long-Term Aging Behavior of SBS Modified Asphalt

2013 ◽  
Vol 710 ◽  
pp. 376-381 ◽  
Author(s):  
Yue Qin Hou ◽  
Xiao Ping Ji ◽  
Xue Zhang Tan
Keyword(s):  
Dynamic Model ◽  
Softening Point ◽  
Rate Equations ◽  
Aging Behavior ◽  
Aging Rate ◽  
Modified Asphalt ◽  
Aging Test ◽  
Two Parameters ◽  
Sbs Modified Asphalt

In order to study the long-term aging behavior of SBS modified asphalt, a nonlinear differential dynamic model was developed and the aging tests with rolling thin film oven test (RTFOT) for SBS modified asphalt were carried out. The dynamic model was developed referring to the population developing model with two parameters, namely average aging rate and aging ratio. And the differentiation of the dynamic model was the aging rate equation with which can calculate the aging rate at any time. The aging tests with RTFOT for SBS modified asphalt at different times were carried out and the penetration, ductility at 5°C, softening point and viscosity at 135°C were measured after RTFOT. With the rest results, the two parameters of nonlinear differential dynamic model of above four indexes were determined, and further the aging rate equations were deduced. The research results show that the nonlinear differential dynamic model can exactly describe the varying behavior of penetration, ductility, softening point and viscosity of SBS modified asphalt after RTFOT aging test with different time. The aging rate reach maximum value at the beginning and becomes smaller and smaller as the time goes.

Aging Behavior of SBS Modified Asphalt in Coupled Water – Heat Condition

2013 ◽  
Vol 723 ◽  
pp. 575-579 ◽  
Author(s):  
Jiu Guang Geng ◽  
Qian Wang ◽  
Wei Guang Li
Keyword(s):  
Infrared Spectroscopy ◽  
Hydration Reaction ◽  
Carbonyl Groups ◽  
Aging Behavior ◽  
Spectroscopy Analysis ◽  
Heat Condition ◽  
Modified Asphalt ◽  
Polar Groups ◽  
Asphalt Performance ◽  
Sbs Modified Asphalt

The aging simulating tests of the SBS and SBS modified asphalt under the conditions of wet and dry are compared and the effect of water on the aging of modified asphalt was investigated by infrared spectroscopy analysis. The results showed that: after aging in the wet conditions the change range of asphalt performance increased. Infrared spectroscopy analysis results showed that the carbonyl content of asphalt and SBS after the aging in wet conditions increased. It was proved that the presence of water accelerated the aging of asphalt and SBS under the action of heat and oxygen. This is mainly due to the substances containing carbonyl groups is further oxidized into carboxylic acids under the action of water, while the double bond in SBS chain can occur the hydration reaction in the coupled WaterHeat condition and become the polar groups.

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

Polymers ◽  
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.

Comparison of quantitative determination for SBS content in SBS modified asphalt

2021 ◽  
Vol 282 ◽  
pp. 122733
Author(s):  
Song Xu ◽  
Yong Fan ◽  
Zhengang Feng ◽  
Yunbin Ke ◽  
Canlin Zhang ◽  
...  
Keyword(s):  
Quantitative Determination ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt

Research on the Impact of Temperature on the Softening Point of SBS Modified Asphalt

2013 ◽  
Vol 365-366 ◽  
pp. 978-982
Author(s):  
Xiao Wei Feng ◽  
De Wen Zhang
Keyword(s):  
Softening Point ◽  
Heating Temperature ◽  
Road Construction ◽  
Curing Temperature ◽  
Important Indicator ◽  
Modified Asphalt ◽  
Influence Of Temperature On ◽  
Sbs Modified Asphalt ◽  
The Impact ◽  
Initial Heating

The softening point of modified asphalt is an extremely important indicator to evaluate the high-temperature performance; its the temperature of modified asphalt sample emerging shear deformation under the action of certain shear stress according to the specific heating rate. Its found that in the actual construction and testing, different temperature conditions has a larger impact on the softening point of the modified asphalt, which has adverse affect on road construction. This paper studied and researched the influence of temperature on modified asphalt softening point indicators from the different test temperature, including packing compact temperature, scraper temperature in removal of asphalt that above test mode, standing temperature, curing temperature and initial heating temperature before test.

Study on Performance and Microstructure of SBS Modified Asphalt during Shearing Process

2012 ◽  
Vol 178-181 ◽  
pp. 1442-1447 ◽  
Author(s):  
Ai Hong Kang ◽  
Wu Hong Zhang
Keyword(s):  
Mechanical Behavior ◽  
Softening Point ◽  
Shape Factor ◽  
Good Relationship ◽  
Modified Asphalt ◽  
Average Area ◽  
Point Total ◽  
Area Percentage ◽  
Sbs Modified Asphalt ◽  
Factor G

To explore the relationships between the performances and microstructures of modified asphalt, in the tests, one kind of basic asphalt、two kinds of modifiers and four kinds of modifiers content were selected to prepare modified asphalt. The SBS modified asphalt performances such as softening point, viscosity, Rutting Factor G*/sinδ and the corresponding microstructures with different shearing time were analyzed. The results show that different modifiers have different modification effects on the asphalt，but the change trends of performances and microstructures with the modifier content and shearing time are basically the same. It is also found that there is a good relationship between microstructure and macro performance, the average area of the modifier is closely related to the softening point, total area (or area percentage) and the shape factor of the modifier are suitable to reflect the mechanical behavior of modified asphalts.

Performance improvement and aging property of oil/SBS modified asphalt

2021 ◽  
Vol 300 ◽  
pp. 123735
Author(s):  
Jing Xu ◽  
Jianzhong Pei ◽  
Jun Cai ◽  
Tao Liu ◽  
Yong Wen
Keyword(s):  
Performance Improvement ◽  
Modified Asphalt ◽  
Aging Property ◽  
Sbs Modified Asphalt

Investigation into Shear Experiment on Interface between Asphalt Pavement and Concrete Bridge Deck

2011 ◽  
Vol 197-198 ◽  
pp. 1435-1442
Author(s):  
Hong Fu Liu ◽  
Jian Long Zheng ◽  
Guo Ping Qian ◽  
Yun Yong Huang
Keyword(s):  
Shear Strength ◽  
Asphalt Pavement ◽  
Adhesive Layer ◽  
Interface Shear ◽  
Contact State ◽  
Modified Asphalt ◽  
Interface Contact ◽  
Concrete Bridge Deck ◽  
Sbs Modified Asphalt ◽  
Concrete Deck

This paper describes the laboratory measurement of shear interface properties between asphalt pavement and concrete bridge deck using the shear test. The main factors affecting shear strength are interface frictional resistance and adhesive stress from material of waterproof layer. Firstly, we simplify the whole system by considering the asphalt pavement as an elastic layer and the cement concrete deck a rigid base. And make a sensitivity analysis on interface contact state and the material modulus of waterproof layer. The maximum shear stress increases as interface contact state changes from continuous to smooth and as modulus of waterproof layer material decreases. Secondly, an interface shear experiment is conducted with the application of portable shear apparatus. With interface shear strength as evaluation indicator, shear strength of different interface treatments is arranged in descending order, i.e. cleaning up laitance and spreading aggregate between layers; only cleaning-up laitance; leaving the surface untreated. While the descending order for shear strength of different waterproof materials can be listed as follows: SBS modified asphalt, penetration grade of 70 asphalt. Therefore, based on the laboratory test results, it is recommended that before applying waterproof adhesive layer, laitance and dust on concrete deck surface should be cleaned up and keeping it dry. And the material for waterproof adhesive layer should be SBS modified asphalt with one-size aggregate of 4.75mm-9.5 mm spreading on.

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