Characteristics of recycled warm-mix asphalt mixture by warm mix additive contents

Young Jin Jo; Jihyun Yun; Kwang W. Kim; Sungun Kim

doi:10.22702/jkai.2020.10.2.029

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2020 Vol.10, Issue 2 Preview Page Next Page

Scientific Paper

Characteristics of recycled warm-mix asphalt mixture by warm mix additive contents 중온 첨가제 사용에 따른 중온 순환아스팔트 혼합물 특성

31 December 2020. pp. 346-357

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Abstract

Warm mix asphalt (WMA) technology has been used world widely because it has various benefits such as reduction of energy consumption, lower mixing and compaction temperatures, early site opening, reduced aging, fewer emissions, cool weather paving, workability improvement. Wax base warm mix additive was developed to use manufacturing normal and modified recycled warm mix asphalt in this study. WMA binder and WMA mixture performance tests by WMA additive contents were conducted to evaluation to binder kinematic viscosity (KV), high temperature stiffness (rutting factor) and strength against to deformation (S_D), indirect tensile strength (ITS), and stiffness index (SI). As result, KV and rutting factor (G*/sinδ) of WMA binder were decreased as increase WMA additive content. S_D, ITS, and SI also decrease with increasing WMA additive contents. Consequently, the use of WMA additive to manufacture WMA mixture verified WMA effect and partially recovery effect for aged binder.

Keywords

Warm mix additive

RAP (reclaimed asphalt pavement)

Kinematic viscosity

Rutting factor (G*/sinδ)

Deformation strength

Stiffness index

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Information

Publisher :KOREAN ASPHALT INSTITUTE
Publisher(Ko) :한국아스팔트학회
Journal Title :Journal of the Korean Asphalt Institute
Journal Title(Ko) :한국아스팔트학회지
Volume : 10
No :2
Pages :346-357
Received Date : 2020-11-28
Revised Date : 2020-12-02
Accepted Date : 2020-12-16
DOI :https://doi.org/10.22702/jkai.2020.10.2.029

Journal of the Korean Asphalt Institute ISSN:2234-0785(Print) 2635-9553(Online) 한국아스팔트학회지

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