Physical properties of warm cup lump modified bitumen

Hainin, Mohd Rosli; Idham, M. K.; Hassan, Norhidayah Abdul; Warid, Muhammad Naqiuddin Mohd; Yaacob, Haryati; Azman, Mawaddah; Puan, Othman Che

doi:10.1088/1757-899x/527/1/012048

Cited by 23 publications

(19 citation statements)

References 15 publications

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“…This happened because the penetration values are not in consistent pattern as well. The same observation happened in Abdulrahman [29] study on 60/70 asphalt binder modified with cup lump rubber (CLR). PVN of modified binder increased with the increasing of CLR percentage.…”

Section: Penetration-viscosity Number (Pvn)supporting

confidence: 74%

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Physical properties of palm oil boiler ash modified bitumen with Rediset

Akhir

Idiajir

Gungat

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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This study examines the physical properties of a 60/70 penetration grade bitumen modified using warm mix asphalt (WMA) additive, Rediset and palm oil boiler ash (POBA) as a modifier. Modified binders were prepared by adding 2% of Rediset with different POBA contents (3, 5, 7, and 9%) through wet mixing process. Physical properties of modified bituminous binder were obtained from penetration, softening point, rotational viscosity and ductility tests. The addition of 7% POBA in WMA binder has the best characteristics in term of its physical properties. The penetration values, softening point temperatures and ductility characteristics show inconsistent patterns. However, the rotational viscosity of each combination had decreased with the increment of temperature even though the trend was not significantly constant. Penetration index (PI) showed an increment with 3 and 5% and decrement pattern on 7 and 9% as well as penetration viscosity number (PVN) showing an inconsistent decrement with the addition of POBA. From the results, it can be concluded that using POBA in WMA binder for pavement construction is a viable option and can be further investigated.

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Section: Penetration-viscosity Number (Pvn)supporting

confidence: 74%

“…As for modified binder, the mixing temperature can be higher than 140°C in order to maintain fluidity of asphalt at lower temperature as well as to improve rutting resistance [27][28][29]. The temperature is fixed at 170±5°C during the mixing stage then POBA and Rediset were gradually added to the asphalt 60/70.…”

Section: Sample Preparationmentioning

confidence: 99%

Physical properties of palm oil boiler ash modified bitumen with Rediset

Akhir

Idiajir

Gungat

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Lateks ataupun lump cup sangat umum digunakan sebagai pemodifikasi aspal yang menghasilkan peningkatan kekerasan aspal seiring meningkatnya kadar lateks dalam aspal. Penambahan lateks dan lump cup paling optimum pada kadar 8-12%, hal tersebut memberikan dampak terhadap meningkatnya sifat-sifat aspal dalam hal kerentanan rutting dan ketahanan terhadap beban (Abdulrahman et al, 2019;Shaffie et al, 2017aShaffie et al, , 2018. Namun, kandungan air yang masih cukup tinggi pada dua bahan tersebut menimbulkan masalah dalam pencampurannya.…”

Section: Pendahuluanunclassified

Penentuan Stabilitas Penyimpanan Aspal Modifikasi Berbasis Karet Alam Padat Jenis Crumb Rubber

Wiranata¹

2021

jbchees

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The development of road infrastructure in Indonesia is very rapid to keep pace with the growth of vehicles. However, the structure of road pavements in Indonesia is not optimal and causes various problems due to overload and Indonesia's climate. Therefore, it is necessary to increase the performance of asphalt binders with additives such as natural rubber or better known as natural rubber modified asphalt. This study examines the effect of natural rubber content (crumb rubber standard Indonesian rubber 20), sulfur additive content, storage temperature, and storage time on the phase stability of natural rubber modified asphalt. Making crumb rubber modified asphalt samples begins with the mastication of crumb rubber in an open mill. Next, crumb rubber was melted at 200°C and mixed in asphalt with 8, 10, and 12% levels. The last stage is to test the stability of modified asphalt storage at a temperature of 160°C for 48 hours. The results showed that modified asphalt with various levels of rubber experienced storage stability problems after 48 hours. The addition of sulfur additives did not significantly affect storage stability. The optimum addition of natural rubber at 10% crumb rubber content with the difference in softening point (Tbottom – Ttop) reached 11.6°C.

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“…Notably, an attempt was made to produce and examine the binder properties of cup lump rubber-modified bitumen. However, only the physical properties of the binder were reported, which is insufficient to fully characterize the novel bitumen [16]. Similarly, Ansari et al [17] extensively analyzed the physical, rheological, and chemical properties of CLR modified bitumen with 0.5% Polyphosphoric acid (PPA).…”

Section: Introductionmentioning

confidence: 99%

Rheological and Morphological Characterization of Modified Bitumen with Cup Lump Rubber

Albuaymi¹,

Alanazi²,

Alanazi³

et al. 2023

Journal of Renewable Materials

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Pure bitumen is not suitable for heavy traffic loads; hence modifiers are used to improve the bitumen performance. Recently, cup lump rubber (CLR) has become a preferred modifier due to its outstanding performance and less cost. However, little is known about the interactions between CLR and bitumen. Thus, this study investigates the behavior of bitumen with CLR. Four percentages of CLR (2.5%, 5.0%, 7.5%, and 10.0% by weight of bitumen) were used to modify conventional 60/70 penetration grade bitumen. The modified bitumen was evaluated through different laboratory testing such as dynamic shear rheometer, rotational viscosity, softening point, bending beam rheometer, ductility, and elastic recovery. The testing results show that the addition of CLR increased the bitumen's rutting resistance by 3 PG grades at high temperatures. At low pavement temperatures, the cup lump rubber modified bitumen (CMB) can withstand up to −34°C. Fourier Transform Infrared (FTIR) analysis shows that the Aromaticity index at 1600 cm -1 rose as the CLR percentage increased, indicating the formation of a binder with a compact structure. This is expected to improve the elasticity of bitumen through π -π interactions. Atomic Force Microscopy (AFM) results showed the Catana phase increased in size and quantity at 5.0% and 7.5% CLR content. While contact angle measurement revealed that the binders are hydrophobic and tend to repel the dropped water on the bitumen surface.

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Physical properties of warm cup lump modified bitumen

Cited by 23 publications

References 15 publications

Physical properties of palm oil boiler ash modified bitumen with Rediset

Physical properties of palm oil boiler ash modified bitumen with Rediset

Penentuan Stabilitas Penyimpanan Aspal Modifikasi Berbasis Karet Alam Padat Jenis Crumb Rubber

Rheological and Morphological Characterization of Modified Bitumen with Cup Lump Rubber

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