Recycled polyethylene and crumb rubber composites modified asphalt with improved aging resistance and thermal stability

2021 ◽  
pp. 130102
Author(s):  
Yuetan Ma ◽  
Shifeng Wang ◽  
Hongyu Zhou ◽  
Wei Hu ◽  
Pawel Polaczyk ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Crumb Rubber ◽  
Rubber Composites ◽  
Modified Asphalt ◽  
Recycled Polyethylene ◽  
Aging Resistance

Effect of LDHs on the aging resistance of crumb rubber modified asphalt

2014 ◽  
Vol 67 ◽  
pp. 239-243 ◽  
Author(s):  
Ling Pang ◽  
Kuangyi Liu ◽  
Shaopeng Wu ◽  
Min Lei ◽  
Zongwu Chen
Keyword(s):  
Crumb Rubber ◽  
Modified Asphalt ◽  
Aging Resistance

Performance of SBS modifier-crumb rubber composite modified asphalt used as an anti-wear layer of perpetual pavement

2021 ◽  
pp. 1-15
Author(s):  
Zhihao Yang ◽  
Linbing Wang ◽  
Xu Bin ◽  
Dongwei Cao ◽  
Jianfeng Li ◽  
...  
Keyword(s):  
Crumb Rubber ◽  
Modified Asphalt ◽  
Rubber Composite ◽  
Perpetual Pavement

scholarly journals Material Properties and Environmental Benefits of Hot-Mix Asphalt Mixes Including Local Crumb Rubber Obtained from Scrap Tires

Environments ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 47
Author(s):  
Lim Min Khiong ◽  
Md. Safiuddin ◽  
Mohammad Abdul Mannan ◽  
Resdiansyah
Keyword(s):  
Asphalt Binder ◽  
Crumb Rubber ◽  
Environmental Benefits ◽  
Asphalt Binders ◽  
Rubber Content ◽  
Scrap Tires ◽  
Asphalt Mixes ◽  
Temperature Resistance ◽  
Modified Asphalt ◽  
Marshall Stability

This paper presents the results of a laboratory-based experimental investigation on the properties of asphalt binder and hot-mix asphalt (HMA) mixes modified by locally available crumb rubber, which was used as a partial replacement of asphalt by weight. In this study, fine crumb rubber with a particle size in the range of 0.3–0.6 mm, obtained from scrap tires, was added to the asphalt binder through the wet process. Crumb rubber contents of 5%, 10%, 15%, and 19% by weight of asphalt were added to the virgin binder in order to prepare the modified asphalt binder samples, while the unmodified asphalt binder was used as the control sample. The crumb rubber modified binder samples were examined for measuring viscosity indirectly using the penetration test, and temperature resistance using the softening point test. Later, both the modified and unmodified asphalt binders were used to produce HMA mixes. Two categories of HMA mix commonly used in Malaysia—namely, AC 14 (dense-graded) and SMA 14 (gap-graded)—were produced using the modified asphalt binders containing 5%, 10%, 15%, and 19% crumb rubber. Two AC 14 and SMA 14 control mixes were also produced, incorporating the unmodified asphalt binder (0% crumb rubber). All of the AC 14 and SMA 14 asphalt mixes were examined in order to determine their volumetric properties, such as bulk density, voids in total mix (VTM), voids in mineral aggregate (VMA), and voids filled with asphalt (VFA). In addition, the Marshall stability, Marshall flow, and stiffness of all of the AC 14 and SMA 14 mixes were determined. Test results indicated that the modified asphalt binders possessed higher viscosity and temperature resistance than the unmodified asphalt binder. The viscosity and temperature resistance of the asphalt binders increased with the increase in their crumb rubber content. The increased crumb rubber content also led to improvements in the volumetric properties (bulk density, VTM, VMA, and VFA) of the AC 14 and SMA 14 mixes. In addition, the performance characteristics of the AC 14 and SMA 14 mixes—such as Marshall stability, Marshall flow, and stiffness—increased with the increase in crumb rubber content. However, the AC 14 mixes performed much better than the SMA 14 mixes. The overall research findings suggest that crumb rubber can be used to produce durable and sustainable HMA mixes, with manifold environmental benefits, for use in flexible pavements carrying the heavy traffic load of highways.

Microstructure analysis and mechanical performance of crumb rubber modified asphalt concrete using the dry process

2020 ◽  
Vol 259 ◽  
pp. 119662 ◽  
Author(s):  
Israel Rodríguez-Fernández ◽  
Farrokh Tarpoudi Baheri ◽  
Maria Chiara Cavalli ◽  
Lily D. Poulikakos ◽  
Moises Bueno
Keyword(s):  
Asphalt Concrete ◽  
Mechanical Performance ◽  
Crumb Rubber ◽  
Microstructure Analysis ◽  
Dry Process ◽  
Modified Asphalt

Laboratory Evaluation of Crumb Rubber Modified Asphalt Mixes

2004 ◽  
Vol 16 (1) ◽  
pp. 45-53 ◽  
Author(s):  
S. K. Palit ◽  
K. Sudhakar Reddy ◽  
B. B. Pandey
Keyword(s):  
Crumb Rubber ◽  
Laboratory Evaluation ◽  
Asphalt Mixes ◽  
Modified Asphalt
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