Production and performance of desulfurized rubber asphalt binder

Sheng, Yanping; Li, Haibin; Geng, Jiuguang; Tian, Yu; Li, Zuzhong; Xiong, Rui

doi:10.1016/j.ijprt.2017.02.002

Cited by 46 publications

(17 citation statements)

References 11 publications

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“…Faktor inilah yang mendasari pemilihan aspal pen 60 dalam pembuatan aspal karet berbasis lateks karet alam. Dari Tabel Shafii et al, 2011;Yin et al, 2013;Sheng et al, 2017).…”

Section: Bahan Dan Metodeunclassified

“…Adanya partikel karet yang menyebabkan meningkatnya keelastisan aspal, justru mengakibatkan aspal karet memiliki nilai daktilitas yang cenderung lebih rendah kecuali aspal karet yang terbuat dari campuran aspal pen 60 dengan lateks L1. Daktilitas menggambarkan sifat plastis dari aspal, oleh karena itu adanya komponen yang bersifat elastis menurunkan daktilitas dari aspal tersebut (Sheng et al, 2017). Dari keempat jenis lateks karet alam yang digunakan sebagai bahan aditif aspal karet, lateks L3 dan L4 memiliki sifat elastis tertinggi karena dalam lateks tersebut antar partikel karet telah saling membentuk Tabel 4.…”

Section: Sifat Fisika Aspal Karet Dengan Penambahan Berbagai Jenis Launclassified

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Sifat Fisika Aspal Modifikasi Karet Alam Pada Berbagai Jenis Dan Dosis Lateks Karet Alam

Prastanto

Firdaus²,

Puspitasari

et al. 2018

JPK

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Biopolimer lateks karet alam berpotensi digunakan sebagai bahan aditif dalam pembuatan aspal modifikasi polimer atau aspal karet. Penelitian ini bertujuan untuk mempelajari pengaruh berbagai jenis dan dosis lateks karet alam terhadap sifat fisika aspal karet. Lateks karet alam yang digunakan meliputi lateks karet alam pekat murni, lateks karet alam kationik, dan lateks karet alam yang telah dipravulkanisasi selama 1 dan 4 jam. Aspal sebagai bahan utama dipilih jenis aspal pen 60. Penilaian mutu aspal karet didasarkan pada hasil pengujian penetrasi, titik lembek, daktilitas, indeks penetrasi, uji TFOT, dan elastic recovery. Pencampuran lateks karet alam dalam aspal pen 60 dilakukan pada suhu 140 – 150oC. Dosis penambahan lateks karet alam divariasikan sebesar 3, 5 dan 7% terhadap berat aspal pen 60. Berdasarkan hasil pengujian diperoleh bahwa lateks kationik (L2) dan lateks pravulkanisasi 4 jam (L3) menghasilkan aspal karet yang lebih baik daripada aspal karet dengan aditif lateks pekat biasa (L1) dan lateks pekat pravulkanisasi 1 jam (L4). Lateks L2 menghasilkan aspal karet dengan titik lembek yang lebih tinggi daripada lateks L3 namun memiliki elastic recovery dan stabilitas penyimpanan yang lebih rendah daripada lateks L3 karena lateks L2 tidak melalui proses pravulkanisasi. Adanya ikatan silang pada lateks pravulkanisasi L3 membuat karet pada campuran aspal karet memiliki elastisitas yang lebih tinggi dan stabilitas penyimpanan yang lebih baik.

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“…Faktor inilah yang mendasari pemilihan aspal pen 60 dalam pembuatan aspal karet berbasis lateks karet alam. Dari Tabel Shafii et al, 2011;Yin et al, 2013;Sheng et al, 2017).…”

Section: Bahan Dan Metodeunclassified

Section: Sifat Fisika Aspal Karet Dengan Penambahan Berbagai Jenis Launclassified

Sifat Fisika Aspal Modifikasi Karet Alam Pada Berbagai Jenis Dan Dosis Lateks Karet Alam

Prastanto

Firdaus²,

Puspitasari

et al. 2018

JPK

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“…The entire development process of rubberized asphalt can be divided into four stages according to the different application methods in different periods [ 4 ]. The first stage is mixing rubber powder and aggregate and then adding asphalt to produce a rubber-modified asphalt mixture [ 5 , 6 ]. The second stage is mixing asphalt + rubber powder + rubber oil, stirring in a tank at a temperature of 180 to 200 °C for about 40 to 60 min, then mixing with aggregate to produce a rubber-modified asphalt mixture [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Investigation of Rubberized Asphalt Using High-Content Rubber Powder

Wang

et al. 2020

Materials

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Rubberized asphalt (RA) has been successfully applied in road engineering due to its excellent performance; however, the most widely used rubber content is about 20%.To improve the content of waste rubber and ensure its performance, seven rubberized asphalts with different powder content were prepared by high-speed shearing. Firstly, penetration, softening point, and ductility tests were carried out to investigate the conventional physical features of high-content rubberized asphalt (HCRA). Then, the dynamic shear rheometer test (DSR) was conducted to estimate the high-temperature rheological properties. The bending beam rheometer test (BBR) was carried out to evaluate the low-temperature rheological performance. Finally, combined with the macroscopic performance test, the modification mechanism was revealed by the Fourier transform infrared reflection (FTIR) test, and scanning electron microscope (SEM) analysis was used to observe the microscopic appearance before and after aging. The results show that rubberized asphalt has excellent properties in high- and low-temperature conditions, and fatigue resistance is also outstanding compared with neat asphalt. As the crumb rubber content increases, it is evident that the 40% RA performance is the best. The low-temperature properties of HCRA are better than the traditional 20% rubberized asphalt. This study provides a full test foundation for the efficient utilization of HCRA in road engineering.

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“…Many studies have confirmed that asphalt binders modified with crumb rubber have higher viscosity compared to that of virgin asphalt binder. In addition, CRM is beneficial in terms of rutting resistance, moisture susceptibility, and low temperature cracking of asphalt binder and asphalt mixture [12,13,14,15]. As a result, the final pavement performance of asphalt mixture prepared using CRM asphalt binder can increase the pavement service life, reduce reflection cracking, decrease traffic noise, reduce maintenance cost, decrease pollution, and is very important for protecting the environment.…”

Section: Introductionmentioning

confidence: 99%

Microscopic Properties of Hydrogen Peroxide Activated Crumb Rubber and Its Influence on the Rheological Properties of Crumb Rubber Modified Asphalt

Wei

et al. 2019

Materials

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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 were analysed using scanning electron microscopy. Moreover, the pore structure in rubber powder was investigated. The rheological properties of bitumen samples obtained from treated and untreated rubber were characterized by conducting dynamic shear rheometer tests. The test results show that the average pore size of the crumb rubber after activation with H2O2 solution is significantly smaller than that of the inactivated crumb rubber, and the volume and surface area of the crumb rubber pores change with H2O2 solution activation in a certain pattern. With the increase in H2O2 solution content, the contact surface between the particles increases, the floccules and pores of the powder increase, and the interface degree between the crumb rubber powder and the asphalt is strengthened. Solubility of the rubber hydrocarbon and the release ability of the carbon black particles from the crumb rubber in the asphalt binder increase, but the mechanical properties of the crumb rubber, including the strength, elasticity, and wear resistance, decrease. As a result, a reduction is observed in the elasticity, viscosity, high-temperature rutting resistance, and elasticity of the ACRM asphalt.

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Production and performance of desulfurized rubber asphalt binder

Cited by 46 publications

References 11 publications

Sifat Fisika Aspal Modifikasi Karet Alam Pada Berbagai Jenis Dan Dosis Lateks Karet Alam

Sifat Fisika Aspal Modifikasi Karet Alam Pada Berbagai Jenis Dan Dosis Lateks Karet Alam

Laboratory Investigation of Rubberized Asphalt Using High-Content Rubber Powder

Microscopic Properties of Hydrogen Peroxide Activated Crumb Rubber and Its Influence on the Rheological Properties of Crumb Rubber Modified Asphalt

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