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Development of Rubberized Asphalt Technology Based on Asphalt Cement (AC Pen 60) and Fresh Natural Rubber in Indonesia
Author(s) -
Ramadhan Arief,
Puspitasari Santi,
Prastanto Henry,
Falaah Asron Ferdian,
Maspanger Dadi Rusadi,
Andriani Woro,
Faturrohman Muhammad Irfan,
Sofyan Teddi Santo,
Firdaus Yusep
Publication year - 2020
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.202000075
Subject(s) - natural rubber , vulcanization , asphalt , materials science , composite material , mixing (physics) , cement , crumb rubber , physics , quantum mechanics
Technology of rubberized asphalt is significantly increased for the last five years among three highest natural rubber producing countries. Fresh natural rubber which is used as asphalt cement additive, consists of pre‐vulcanized natural rubber latex (NRL), solid rubber compound, and master‐batch. Selection of fresh natural rubber types are strongly influenced by process‐ability, while dosage of fresh natural rubber determine rubberized asphalt properties. Mixing of pre‐vulcanized NRL with hot melted asphalt is run at stirred mixer, while addition of solid rubber compound and master‐batch into asphalt is conducted by using high shear mixer at 150 °C. Observation during rubberized asphalt production shows that mixing of solid rubber based asphalt additive was longer (12 h) than pre‐vulcanized NRL (4 h). Longer mixing time due to solid rubber tend to swell in the hot melted asphalt since there is polarity difference between rubber particles and asphalt. Analysis of rubberized asphalt physical property shows that pre‐vulcanized NRL produces highest elastic recovery value (40–70%) compared to rubberized asphalt based on solid rubber (25.8%). High elastic recovery indicates better resistance of rubberized asphalt against high traffic load and harsh environment. It can be concluded that during field trial test, usage of pre‐vulcanized NRL is more beneficial.