An assessment of SBS modified asphalt concrete pavements performance features performing numerical analysis

2017 ◽  
Author(s):  
Ahmet Sertac Karakas ◽  
Tarik Serhat Bozkurt ◽  
Baris Sayin ◽  
Faruk Ortes
Keyword(s):  
Numerical Analysis ◽  
Asphalt Concrete ◽  
Concrete Pavements ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt

scholarly journals Evaluating the Influence of Polymer Modified Asphalt Binders on Low Temperature Properties

2018 ◽  
Vol 163 ◽  
pp. 05012
Author(s):  
Amal Abdelaziz ◽  
Chun-Hsing Ho ◽  
Matthew Snyder
Keyword(s):  
Low Temperature ◽  
Asphalt Concrete ◽  
Asphalt Binder ◽  
Traffic Load ◽  
Asphalt Binders ◽  
Concrete Pavements ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Low Temperature Cracking ◽  
Sbs Modified Asphalt

Low temperature cracking is one of the most common distress types in asphalt concrete pavements, particularly in cold regions. Many factors influence the behaviour of asphalt concrete pavements at low temperatures, such as the applied traffic load, environmental conditions and material characteristics. Asphalt binders are one of the primary factors that influence material properties. The purpose of this study is to compare the performance of two types of asphalt binders: styrene-butadiene-styrene (SBS) modified asphalt binder and unmodified asphalt binder in resisting low temperature cracking. The study was conducted in Flagstaff, located at the area of Northern Arizona, in the United States. Asphalt samples were collected from the paving sections and were compacted and trimmed into small beams. Bending Beam Rheometer tests were performed, using the trimmed specimens at temperatures of -6°C, -12°C and -18°C. Based on the results of the study, it was concluded that, SBS modified asphalt binder performs better in resisting low temperature cracking, compared to the unmodified binder. Based on the study outcomes, it is recommended to use SBS polymer modified polymers in areas subjected to severe cold weather events to maximize the life span of asphalt concrete pavements.

Study on the Piezoresistivity Character of Electrically Conductive Asphalt Concrete

2011 ◽  
Vol 233-235 ◽  
pp. 1756-1761 ◽  
Author(s):  
Xiao Ming Liu ◽  
Shao Peng Wu
Keyword(s):  
Asphalt Concrete ◽  
Raw Materials ◽  
Great Influence ◽  
Graphite Powder ◽  
Crumb Rubber ◽  
Highway Traffic ◽  
Electrically Conductive ◽  
Intelligent Monitoring ◽  
Modified Asphalt ◽  
Sbs Modified Asphalt

Raw materials, such as SBS modified asphalt, graphite powder and crumb rubber were selected to blend with aggregate mixture to product electrically conductive asphalt concrete. Experimental results demonstrated the stress or strain had a great influence on the resistance of conductive asphalt concrete, which exhibited sensitive piezoresistivity. In fact, the piezoresistivity reflects the change in microstructure. The reason for piezoresistivity may involve proximity effect, microcrack and the dislocation of conductive paths due to shear strength of aggregates. With further study on the variation of the resistance, it is hopeful to explore the microstructure change of asphalt concrete under dynamic compressive stress. Therefore this new-style asphalt concrete has extensively practical foreground in fatigue damage testing, highway traffic intelligent monitoring and so on.

Application Study on High Modulus Asphalt Concrete in Bridge Pavement

2011 ◽  
Vol 243-249 ◽  
pp. 4244-4247 ◽  
Author(s):  
Yun Liang Li ◽  
Yi Qiu Tan ◽  
Liang Meng
Keyword(s):  
Asphalt Concrete ◽  
Oil Field ◽  
Pavement Performance ◽  
High Modulus ◽  
Practical Application ◽  
Application Study ◽  
Damage Resistance ◽  
Modified Asphalt ◽  
Practical Project ◽  
Sbs Modified Asphalt

A type of high modulus asphalt was prepared by mixing modifier into SBS modified asphalt and used for confecting HMAC-16 high modulus asphalt concrete with finished product of modified asphalt from Liaohe oil field. This paper investigates pavement performance of high modulus asphalt concrete and its practical application in bridge pavement. Results obtained by application in practical project show that the high modulus asphalt concrete is provided with outstanding high-and-low temperature performance and water damage resistance which are suitable for bridge pavement.

Experimental Study on Fatigue Characteristics of Asphalt Concrete in Bridge Pavement

2011 ◽  
Vol 97-98 ◽  
pp. 280-283
Author(s):  
Yun Liang Li ◽  
Yi Qiu Tan
Keyword(s):  
Asphalt Concrete ◽  
Composite Structures ◽  
Experimental Studies ◽  
Fatigue Tests ◽  
Asphalt Mixtures ◽  
Modified Asphalt ◽  
Different Types ◽  
Fatigue Characteristics ◽  
Sbs Modified Asphalt ◽  
Better Than

This paper demonstrates a type of SBS modified asphalt which added 8% TPS as the mixture for bridge pavement. Four types of asphalt mixtures were designed for composing four types of material forms. The fatigue characteristics of different types of combination of materials are studied by three-point fatigue tests of small beams. Equations of fatigue characteristics are obtained based on the experimental studies. Results show that antifatigue characteristics of SMA13+AC16 are better than others, while the sensitive degrees of fatigue life of four composite structures are generally the same to stress level.

Experimental Investigation on Performance of Fiber Asphalt Mixture

2011 ◽  
Vol 374-377 ◽  
pp. 1396-1399
Author(s):  
Ju Hong Han ◽  
Jin Jun Guo ◽  
Zhong Liu
Keyword(s):  
Asphalt Concrete ◽  
Asphalt Mixture ◽  
Pavement Performance ◽  
Mixture Ratio ◽  
Modified Asphalt ◽  
Positive Effects ◽  
Road Performance ◽  
Sbs Modified Asphalt ◽  
Comprehensive Indicator

The paper investigates positive effects of three kinds of fibers on the performance of asphalt concrete mixture, which include mineral fiber (Fiberand®), lignin fiber and polyacrylonitrile (Dolanit@AS). The contrast experiments of AC-13 SBS modified asphalt mixture added fibers were carried out. The results reveal that the pavement performance can be improved remarkably if appropriate fibers are added into the asphalt mixture. The method of determining optimum mixture ratio was proposed on the basis of road performance of asphalt concrete. It is more reasonable to adopt comprehensive indicator containing stability and dynamic stability in determination of the optimum mixture ratio of asphalt concrete.

scholarly journals Performance Evaluation of Geocomposite Reinforcement in Flexible Pavements using Marshall Test Protocol

2018 ◽  
Vol 203 ◽  
pp. 06020 ◽  
Author(s):  
Adnan Qadir ◽  
Karam-un-Nisa Choudhary
Keyword(s):  
Performance Evaluation ◽  
Asphalt Concrete ◽  
Concrete Surface ◽  
Concrete Pavements ◽  
Reflective Cracking ◽  
Test Protocol ◽  
Modified Asphalt ◽  
Marshall Test ◽  
Asphalt Content ◽  
External Loads

Asphalt concrete pavements are prone to cracking due to external loads and extreme weathering conditions. Generally the failed asphalt concrete is over laid with new asphalt concrete surface to improve the riding surface; however after sometime the crack reappears in the form of reflective cracking. Studies have found that such cracks can be controlled by introduction of Geo-synthetics layer before overlaying. The presented study presents one such effort in which the performance of such modification was evaluated by testing a number of modified specimens using Marshall’s test protocol. The resulting Stability flow quotient at optimum asphalt content showed no appreciable improvement as expected. Hence it can be concluded that the performance of Geocomposite modified asphalt concrete cannot be evaluated using Marshall Test protocols.

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.

Sign in / Sign up

Export Citation Format

Share Document