THE RUTTING RESISTANCE AND RESILIENT MODULI OF PRE-VULCANIZED LIQUID NATURAL RUBBER MODIFIED ASPHALTIC CONCRETE IN WARM-MIX TEMPERATURE CONDITION

Irfan Irfan,Eri Susanto Hariyadi,Indra Maha,Bambang Sugeng Subagio

doi:10.3846/jcem.2022.16452

Irfan Irfan, Eri Susanto Hariyadi + Show 2 more

Open Access

https://doi.org/10.3846/jcem.2022.16452

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Abstract

Pre-Vulcanized Liquid Natural Rubber (PVLNR) modified asphalt leaves problems such as increasing the viscosity, thereby increasing the mixing and compaction temperature up to 175 °C, accelerating the ageing process. Therefore it is necessary to do developing methods using PVLNR at lower mixing temperatures requires warm-mix technology. This study aimed to evaluate the use of PVLNR modified asphalt in warm mix asphalt (WMA). Laboratory testing includes rheological modified asphalt, the workability analysis, Resilient Modulus and Deformation. The results showed that the PVLNR content decreased penetration increased the softening point and asphalt viscosity. In addition, additive Rediset LQ plays a role in reducing asphalt viscosity. The advantages of PVLNR modified asphalt are increasing elastic recovery, saving asphalt consumption and increasing the Modulus of hot mix asphalt rubber (HAR) and warm mix asphalt rubber (WAR). In addition, the Rutting resistance of WAR is better than that of HMA and WMA.

Highlights

Economic growth is directly proportional to the increase in demand for infrastructure networks both in quality and quantity
This study aims to evaluate the performance of the warm mix asphalt modified with Pre-Vulcanized Liquid Natural Rubber (PVLNR) at a lower mixing and compaction temperature of 30 °C, using the Rediset LQ additive WMA technology
The Rediset LQ additive added to the original asphalt makes the asphalt harder so that the penetration decreases (Table 3)

Summary

Introduction

Economic growth is directly proportional to the increase in demand for infrastructure networks both in quality and quantity. Can be in the form of improving the quality of the road network, especially asphalt pavement (Asian Development Bank, 2012). The conventional 60/70 Pen asphalt limitations are easy to deform at high temperatures and fatigue at low temperatures (Rezvan & Hassan, 2017). Heavy load vehicles can accelerate and damage roads, affecting costs, encouraging modified asphalt to improve asphalt quality such as viscosity, softening point, and elasticity (Ibrahim et al, 2017; Zurni et al, 2013). Used modified asphalt uses a polymer (Babagoli et al, 2021). Several types of polymer used are imported materials, which burden the country foreign exchange

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