Investigation of the rutting performance of various modified asphalt mixtures using the Hamburg Wheel-Tracking Device test and Multiple Stress Creep Recovery test

2019 ◽  
Vol 206 ◽  
pp. 62-70 ◽  
Author(s):  
Quan Lv ◽  
Weidong Huang ◽  
Husam Sadek ◽  
Feipeng Xiao ◽  
Chuanqi Yan
Keyword(s):  
Asphalt Mixtures ◽  
Creep Recovery ◽  
Recovery Test ◽  
Multiple Stress ◽  
Modified Asphalt ◽  
Multiple Stress Creep Recovery ◽  
Tracking Device ◽  
Wheel Tracking ◽  
Device Test ◽  
Hamburg Wheel Tracking

scholarly journals Effect of Modifiers on the Rutting, Moisture-Induced Damage, and Workability Properties of Hot Mix Asphalt Mixtures

2020 ◽  
Vol 10 (20) ◽  
pp. 7145 ◽  
Author(s):  
Jiandong Huang ◽  
Yuantian Sun
Keyword(s):  
Hot Mix Asphalt ◽  
Crumb Rubber ◽  
Asphalt Mixtures ◽  
Creep Recovery ◽  
Multiple Stress Creep Recovery ◽  
Indirect Tensile ◽  
Tracking Device ◽  
Wheel Tracking ◽  
Styrene Butadiene ◽  
Butadiene Styrene

The present study aims to examine the effect of modifiers (Styrene-Butadiene-Styrene and crumb rubber) on the rutting, moisture-induced damage, and workability properties of hot mix asphalt (HMA) mixtures. In this study, three types—namely, control (CB), crumb rubber-modified (CRMB), and polymer-modified (PMB)—of mixtures/binders were evaluated. The rutting properties were evaluated using a wheel tracking device and the Multiple Stress Creep Recovery (MSCR) test. The moisture-induced damage properties were evaluated using the Indirect Tensile Strength (modified Lottman) and bitumen bond strength (BBS) tests. The workability properties were evaluated using densification indices (Bahia and locking point method) and a viscosity test. The results indicate that CRMB mixtures were less workable and exhibited a better resistance to rutting than the PMB and CB mixtures. Further, the PMB mixtures had increased resistance to moisture-induced damage, while the effect of the CRMB mixtures was negligible compared to the CB mixtures.

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.

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