Research on Rubber/SBS Modified Asphalt by MSCR Test

2012 ◽  
Vol 557-559 ◽  
pp. 1066-1069 ◽  
Author(s):  
Xiao Bing Qiao ◽  
Xiao Min Li ◽  
Ding Bang Wei
Keyword(s):  
High Temperature ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Creep Recovery ◽  
Climate Conditions ◽  
Recovery Test ◽  
Multiple Stress ◽  
Modified Asphalt ◽  
Multiple Stress Creep Recovery ◽  
Sbs Modified Asphalt

Multiple stress creep recovery test (MSCR) as an effective evalution mothed for polymer modified asphalt was studied newly,and was formed a new ASTM standard.In this article, SBS modified asphalt,rubber asphalt,and rubber/SBS composite modified asphalt were taken a multiple stress creep recovery test (MSCR) through the dynamic shear rheometer (DSR), value of Jnr and Jnr-diff from MSCR test of different modified asphalt were studied according to ASTM D7405-08.The results showed the rubber / SBS modified asphalt had a lower Jnr compared with the other two,which indicating that it had an obvious advantage on high temperature deformation resistancing.Furthermore,low Jnr-diff value was related with lower dependence on the shear stress. made it applicable to conditions such as high temperature and overload or long steep road construction; MSCR test also provides a reasonable basis for choosing modified asphalt in such geological and climate conditions.

scholarly journals Anti-Rutting Performance Analysis of Asphalt Mixture with Different Natural Asphalt

2014 ◽  
Vol 529 ◽  
pp. 256-259 ◽  
Author(s):  
Wen Tong Huang ◽  
Guo Yuan Xu
Keyword(s):  
High Temperature ◽  
Performance Analysis ◽  
Asphalt Mixture ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Aggregate Gradation ◽  
Modified Asphalt ◽  
Deformation Law ◽  
Natural Asphalt ◽  
Sbs Modified Asphalt

The modification mechanism and high temperature deformation law are obtained by the rutting test of the same matrix asphalt and aggregate gradation with different natural asphalt mixture. It proves that the anti-rutting performance of the asphalt mixture with Iran rock is close to that of SBS modified asphalt mixture.

Experimental Study on High-Temperature Characteristic of Compound Crumb Rubber Modified Asphalt and Mixture

2011 ◽  
Vol 255-260 ◽  
pp. 3195-3199
Author(s):  
Lan Wang ◽  
Yong Ming Xing ◽  
Chun Qing Chang
Keyword(s):  
High Temperature ◽  
High Speed ◽  
Permanent Deformation ◽  
Temperature Characteristic ◽  
Crumb Rubber ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Modified Asphalt ◽  
Compression Creep ◽  
Temperature Crack

Compound crumb rubber modified asphalt (CCRMA) is a kind of compound modified asphalt. It is made from putting granulated crumb rubber (GCR) crashed from scrap tires and SBS modifier into matrix asphalt, though shearing by high speed shearing machine and growthing. It has good low temperature crack-resistant attributes, and better preventing high temperature distortion as well. The application of abandoned rubber tire is significant to cutting down on pollution,developing circular economy and protecting the environment. The microstructure of matrix asphalt and CCRMA is observed by SEM. Based on the results of temperature sweep test for CCRMA and uniaxial compression creep test for CCRMA mixture, the high-temperature characteristic of compound modified asphalt and mixture is studied. It is observed that, CCRMA has preferable anti-permanent deformation performance. CCRMA mixture has perferable anti-high temperature deformation performation. In the meantime, the viscous-elastic parameters of CCRMA mixture is obtained by fitting experimental data, it provides a referance for viscoelastic mechanics analyze of bituminous pavement.

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