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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Bioprocess Chemical and Environmental Engineering Science
Arya Wiranata
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Pengaruh Mastikasi Karet Terhadap Karakteristik Campuran Aspal - Karet Spesifikasi Teknis (Crumb Rubber) Arya Wiranata; M. Iwan Fermi; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The use of natural rubber in the form of solids such as crumb rubber (SIR 20) will require a long time when mixing with asphalt, therefore mastication process is used before mixing with asphalt. Mastication is process of grinding natural rubber in open mill to break the chain in natural rubber polymer. The aim of this study to determine the effect of rubber mastication and rubber storage time after mastication on modified asphalt characteristics. In mastication process, asphalt as plasticizer agents with levels of 0%, 1%, 2%, 3%, 4% and 5% w/w and rubber storage time after mastication are 0 days and 30 days. The asphalt used is 60/70 penetration type asphalt. Asphalt modified by mixing SIR 20 and asphalt with a ration of 1:9 at temperature of 165oC and stirring time for 30 minutes. Modified asphalt is tested for penetration test, softening point, marshall stability, and weight loss. The results of the study showed that the addition of plasticizers in rubber and rubber storage time after mastication affected the value of penetration, softening point, marshall stability, and weight loss. The best results were obtained at 0% plasticizer content and 0 days rubber storage time with a Penetration value of 58.5 dmm, Softening Point 59.1ºC, Marshall Stability 1710.9 kg, and Weight Loss 0%. The storage time of 30 days, the best results on a 5% plasticizer content with a Penetration value of 58.4 mm, Softening Point 56.3ºC, Marshall Stability 1463.3 kg, and Weight Loss 0.27%.Keywords : asphalt modification, plasticizer, mastication, SIR 20, penetration, softening point, marshall stability
Penentuan Stabilitas Penyimpanan Aspal Modifikasi Berbasis Karet Alam Padat Jenis Crumb Rubber Arya Wiranata
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.3.1.1-14

Abstract

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.
Co-Authors Bahruddin M. Iwan Fermi