Utilization of aluminium dross as asphalt filler

Abstract

Asphalt industry finds itself battling ongoing economic difficulties and an urge to achieve a more sustainable development and growth. it means constant searching is needed for alternative materials and possibilities to use recycled and processed waste materials in asphalt mixes as long as an expected level of performance and durability is provided. Aluminium dross is a recyclable by-product of the casting process of melted aluminium. in this study an attempt was made to reveal the potentials of using aluminium dross as filler for asphalt wearing course mixes. During the research, filler fractions (d<0.063 mm) were prepared by milling and microstructural tests were conducted both on the alternative and control filler for a better understanding of the materials and their composition. the effect of replacing limestone filler with aluminium dross filler on the performance of asphalt mixes was analysed by performance-based and performance related asphalt mechanical tests according to common standards. in the paper, the properties of fillers and various mechanical test results are presented and by interpreting the tests and results final conclusions are presented regarding the use of aluminium dross as filler in asphalt mixes. keywords: asphalt, aluminium dross, filler, rheology, stiffness kulcsszavak: aszfalt, alumínium salak, töltőanyag, reológia, merevség member of the member of the Hungarian scientific Association for transport bella UDvarDi, bSc Graduated in 2017 as material engineer, Bsc. currently working on her msc diploma work.

Evaluating the Moisture Susceptibility of Asphalt Mixtures Containing RCA and Modified by Waste Alumina

“…Final conclusions about the usage of aluminum dross waste as a passing sieve (No. 200) in asphalt mixes are offered by Soós et al [11] after the qualities of fillers and the results of various mechanical tests are analyzed. It was observed that adding dross in place of the limestone filler stiffens the asphalt mixture and raises the phase angle.…”

Appraisal of Asphalt Mixtures’ Cracking Resistance Modified with Waste Aluminum Scrap Powder (WASP) at Intermediate Temperatures

“…To investigate the composition of alternative and control fillers, milled filler fractions (d < 0.063 mm) were employed for microstructural analyses. Performance-based and performancerelated asphalt mechanical tests using conventional criteria explored how replacing limestone filler with aluminum dross filler affected asphalt mix performance [12]. In another study, laboratory tests of modified asphalt concrete with aluminum and polymer waste composite affect pavement mixtures.…”