Academic literature on the topic 'Crumb rubber modifier (CRM)'

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Journal articles on the topic "Crumb rubber modifier (CRM)"

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Mashaan, Nuha Salim, Asim Hassan Ali, Mohamed Rehan Karim, and Mahrez Abdelaziz. "A Review on Using Crumb Rubber in Reinforcement of Asphalt Pavement." Scientific World Journal 2014 (2014): 1–21. http://dx.doi.org/10.1155/2014/214612.

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An immense problem affecting environmental pollution is the increase of waste tyre vehicles. In an attempt to decrease the magnitude of this issue, crumb rubber modifier (CRM) obtained from waste tyre rubber has gained interest in asphalt reinforcement. The use of crumb rubber in the reinforcement of asphalt is considered as a smart solution for sustainable development by reusing waste materials, and it is believed that crumb rubber modifier (CRM) could be an alternative polymer material in improving hot mix asphalt performance properties. In this paper, a critical review on the use of crumb r
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Mohammadi, Iman, and Hadi Khabbaz. "Challenges Associated with Optimisation of Blending, Mixing and Compaction Temperature for Asphalt Mixture Modified with Crumb Rubber Modifier (CRM)." Applied Mechanics and Materials 256-259 (December 2012): 1837–44. http://dx.doi.org/10.4028/www.scientific.net/amm.256-259.1837.

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The use of modified asphalt binders has become much more common over the past two decades. Many types of modifier have been used in paving asphalts to enhance the performance of asphalt pavements in a wide range of climates and loading conditions. Among various asphalts binder modifiers, the recycled crumb rubber has been used very successfully for many years. Generally in production of CRM binder, mixing and compaction temperature is determined by measuring of binder viscosity. The ordinary method used for viscosity measurement of unmodified binder leads to a very high Mixing and Compaction T
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Li, Bo, Xuwei Zhu, Xingjun Zhang, Xiaolong Yang, and Xiuli Su. "Surface area and microstructure of microwave activated crumb rubber modifier and its influence on high temperature properties of crumb rubber modifier binders." Materials Express 10, no. 2 (2020): 272–77. http://dx.doi.org/10.1166/mex.2020.1634.

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Crumb rubber pretreatment by microwave before blending with an asphalt matrix can address and improve the modification problem of of crumb rubber modifier (CRM) asphalt plant. In this research, the surface area and microstructure of microwave activated CRM and high-temperature performance of CRM asphalt were investigated to characterize the mechanism of interaction between activated CRM blends added and base asphalt. The surface area and microstructure of CRM were measured by gas adsorption method and the scanning electron microscopy (SEM) respectively when CRM was activated using microwave tr
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Hemmati, Navid, Shyaamkrishnan Vigneswaran, Mithil Mazumder, Moon-Sup Lee, and Soon-Jae Lee. "Laboratory Assessment of Modified Asphalt Binders Using Crumb Rubber Modifier (CRM) and Processed Oil." Construction Materials 3, no. 1 (2023): 93–109. http://dx.doi.org/10.3390/constrmater3010007.

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The study examines the effects of modifying PG 64-22 asphalt binder with Crumb Rubber Modifier (CRM) and processed oil on its properties. The binder was tested at different temperatures, and different amounts of CRM and processed oil were added to the binder. The modified binders were also aged using different procedures. The study found that adding processed oil to CRM-modified binders reduces viscosity and improves workability, while CRM improves the rutting resistance. However, the addition of processed oil reduces the binder’s rutting performance. The study also found that CRM and processe
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Vigneswaran, Shyaamkrishnan, Jihyeon Yun, Moon-Sup Lee, and Soon-Jae Lee. "Effect of Kaolinite and Cloisite Na+ on Storage Stability of Rubberized Binders." Materials 16, no. 11 (2023): 3902. http://dx.doi.org/10.3390/ma16113902.

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This study aimed to evaluate the impact of a two-step modification process involving kaolinite and cloisite Na+ on the storage stability of rubberized binders. The process involved the manual combination of virgin binder PG 64-22 with crumb rubber modifier (CRM), which was heated to condition it. The preconditioned rubberized binder was then modified for two hours at a high speed of 8000 rpm using wet mixing. The second stage modification was performed in two parts, with part 1 using only crumb rubber as the modifier and part 2 involving the use of kaolinite and montmorillonite nano clays at a
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Zainal, S. M. Iqbal S., Debbie Mattius, Zulhelmi Baba, Ahmad Nurfaidhi Rizalman, and Farzad Hejazi. "Improving the Performance of Lightweight Crumb Rubber Mortar Using Synthetic, Natural, and Hybrid Fiber Reinforcements." Fibers 11, no. 1 (2023): 9. http://dx.doi.org/10.3390/fib11010009.

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The global market for tires is ever-growing, and partially replacing sand with crumb rubber (CR) as fine aggregates in concrete could reduce environmental pollution. However, the main barrier to the complete usage of recycled tire crumbs in construction is the deterioration effect of CR on the mechanical properties of cement-based composites. Therefore, this paper attempts to improve the fresh and hardened properties of crumb rubber mortar (CRM) by incorporating polypropylene-polyethylene synthetic fibers with coconut and kenaf natural fibers as reinforcements. A total of 18 mix designs were d
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Li, Bo, Hao Li, Yongzheng Wei, Xingjun Zhang, Dingbang Wei, and Jia Li. "Microscopic Properties of Hydrogen Peroxide Activated Crumb Rubber and Its Influence on the Rheological Properties of Crumb Rubber Modified Asphalt." Materials 12, no. 9 (2019): 1434. http://dx.doi.org/10.3390/ma12091434.

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Crumb rubber modified (CRM) asphalt binder has been affirmed to improve resistance to rutting, moisture susceptibility, low-temperature cracking, and asphalt durability. However, CRM has poor compatibility with asphalt since crumb rubber molecules are vulcanized. The objective of this study was to develop a new method to prepare activated crumb rubber using hydrogen peroxide (H2O2) solution and to explore the rheological properties of H2O2 activated CRM (ACRM) asphalt. Three different percentages of H2O2 solution were used to activate crumb rubber. The surface properties of oxidized rubber wer
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Thodesen, Carl, Khaldoun Shatanawi, and Serji Amirkhanian. "Effect of crumb rubber characteristics on crumb rubber modified (CRM) binder viscosity." Construction and Building Materials 23, no. 1 (2009): 295–303. http://dx.doi.org/10.1016/j.conbuildmat.2007.12.007.

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Mashaan, Nuha Salim, and Mohamed Rehan Karim. "Evaluation of Permanent Deformation of CRM-Reinforced SMA and Its Correlation with Dynamic Stiffness and Dynamic Creep." Scientific World Journal 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/981637.

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Today, rapid economic and industrial growth generates increasing amounts of waste materials such as waste tyre rubber. Attempts to inspire a green technology which is more environmentally friendly that can produce economic value are a major consideration in the utilization of waste materials. The aim of this study is to evaluate the effect of waste tyre rubber (crumb rubber modifier (CRM)), in stone mastic asphalt (SMA 20) performance. The virgin bitumen (80/100) penetration grade was used, modified with crumb rubber at four different modification levels, namely, 6%, 12%, 16%, and 20% by weigh
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Ragab, Mohyeldin, and Magdy Abdelrahman. "Investigation of the Physical and Molecular Properties of Asphalt Binders Processed with Used Motor Oils." Journal of Materials 2015 (December 21, 2015): 1–9. http://dx.doi.org/10.1155/2015/632534.

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In this work we investigated the performance aspects of addition of used motor oils (UMO) to neat and crumb rubber modified asphalts (CRMA) and related that to the change of molecular size distribution of modified asphalt’s fractions; asphaltenes, saturates, naphthene aromatics, and polar aromatics. Based on the results of temperature sweep viscoelastic tests, addition of crumb rubber modifier (CRM) alone or with UMO results in the formation of internal network within the modified asphalt. Based on the results of short and long term aged asphalts, the utilization of combination of UMO and CRM
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Dissertations / Theses on the topic "Crumb rubber modifier (CRM)"

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ADHIKARI, THAM. "QUALITY AND DURABILITY OF RUBBERIZED ASPHALT CEMENT AND WARM RUBBERIZED ASPHALT CEMENT." Thesis, 2013. http://hdl.handle.net/1974/7921.

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This thesis discusses and documents findings from an investigation of performance-based testing of asphalt cement (AC), warm mixed asphalt cement, asphalt rubber (AR), and warm asphalt rubber. A number of control, warm, and asphalt rubber binders from Ontario construction contracts were investigated for their compliance with conventional Superpave® test methods such as rolling thin film (RTFO), pressure aging vessel (PAV), dynamic shear rheometer (DSR), and bending beam rheometer (BBR), as well as additional specification tests such as extended BBR and double edge notched tension test. The qua
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Books on the topic "Crumb rubber modifier (CRM)"

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United States. Federal Highway Administration., ed. Crumb rubber modifier (CRM) in asphalt pavement: Summary of practices in Arizona, California and Florida. Federal Highway Administration, 1995.

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United States. Federal Highway Administration., ed. Crumb rubber modifier: Workshop notes : design procedures and construction practices. U.S. Dept. of Transportation, Federal Highway Administration, 1993.

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Book chapters on the topic "Crumb rubber modifier (CRM)"

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Saeed, Saeed Modibbo, Mohammad Yusri Aman, Kabiru Abdullahi Ahmad, Ahmad Batari, Ahmad Tijjani Ahmed Yero, and Adamu Umar Chinade. "Effect of Crumb Rubber Modifier on the Fatigue Performance of Warm Mix Asphalt." In GCEC 2017. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8016-6_98.

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Li, Ping, Hongli Ding, Xingyu Zhang, Huaxin Xu, Junjie Xie, and Xiaofan Jia. "Preparation and Application of Crumb Rubber/SBS Composite Modified Asphalt." In Advances in Transdisciplinary Engineering. IOS Press, 2024. http://dx.doi.org/10.3233/atde240741.

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In this paper, the preparation technology, rheological properties, and modification mechanism of rubber powder/SBS composite modified asphalt were systematically studied. The preparation process and parameters of rubber powder/SBS composite modified asphalt were determined as follows: the SBS was developed for 3 hours followed by the addition of rubber powder, with a development temperature of 180±5°C. The content of stabilizer was 2‰, the content of compatible agent (furfural extraction oil) was 3.0%, the content of rubber powder was 18–20%, and the content of SBS was 2.5–3.5%. Three indexes-
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Conference papers on the topic "Crumb rubber modifier (CRM)"

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Khasawneh, M. A. "Experimental characterization and environmental impact of different grades of CRM-modified asphalt binders." In Advanced Topics in Mechanics of Materials, Structures and Construction. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902592-3.

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Abstract. The use of Crum Rubber Modifier (CRM) with asphalt binders improves their properties by reducing their temperature susceptibility; this improvement is dependent on the way CRM and binder react with each other. The CRM particles tend to absorb some oils from asphalt binder and swell, resulting in a higher viscosity and thus stiffer binder. This paper discusses the effect of adding CRM to asphalt binder by applying three different percentages of CRM on two asphalt binders, viz., 60-70 and 85-100. A total of 120 specimens were prepared to test their basic physical properties such as pen
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Šernas, Ovidijus, Audrius Vaitkus, and Deimantė Kilaitė. "A review of the best experience on crumb rubber – dry process modified asphalt mixture performance." In 6th International Conference on Road and Rail Infrastructure. University of Zagreb Faculty of Civil Engineering, 2021. http://dx.doi.org/10.5592/co/cetra.2020.1323.

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The use of crumb rubber made from end of life tyres for asphalt mixtures modification in order to improve their properties or just utilize waste products may be considered as potential solution. Crumb rubber can be used as a bitumen modifier (wet process) or supplementary component of the asphalt mixture (dry process). Dry modification process has more potential due relatively unsophisticated technology and higher possible to use amount of crumb rubber comparing to the wet process. The performance of asphalt mixtures modified by dry process mainly depends on several factors as crumb rubber typ
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Šernas, Ovidijus, Donatas Čygas, Audrius Vaitkus, and Vytautė Gumauskaitė. "The Influence of Crumb Rubber on Modified Bitumen Properties." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.147.

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Rubber derived from grinding of recycled cars and trucks tyres may be successfully used as a bitumen modifier. Number of researches reported sufficient characteristics of rubber modified asphalt binders or modified asphalt mixes in terms of improved permanent deformation and fatigue cracking. The behavior of crumb rubber asphalt binders depends on several factors, such as modification method, rubber content and size, modification temperature, mixing speed and time applied during the digestion process. The aim of this study is to evaluate the effect of crumb rubber amount and type on modified b
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Shakir, Rawa’a, and Shakir Al-Busaltan. "The effect of crumb rubber modifier on the resistance of asphalt mixes to rutting deformation." In 7TH INTERNATIONAL CONFERENCE ON ENGINEERING SCIENCES – ICES23. AIP Publishing, 2025. https://doi.org/10.1063/5.0272992.

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